• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device and a method for converting a radar signal for further signal processing in a test stand with a Radarzielemulator and a test bed with such a device. A divider arrangement preferably has a divider device, which is set up to reduce a frequency and a bandwidth of the radar signal by a first factor for further signal processing. A multiplication arrangement preferably has a replication device, which is set up to increase a frequency and a bandwidth of the radar signal after the further signal processing by the first factor.
    公开号:AT520578A1
    申请号:T50857/2017
    申请日:2017-10-06
    公开日:2019-05-15
    发明作者:Ing Dr Techn Michael Ernst Gadringer Dipl；Andreas Gruber BSc；Dipl Ing Michael Vorderderfler Bsc；Ing Dr Techn Helmut Schreiber Dipl
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    Device and method for converting a radar signal and test stand
    The present invention relates to an apparatus and a method for converting a radar signal for further signal processing in a test stand with a Radarzielemulator and a test bench with such a device.
    The complexity of mobile systems, in particular land-based motor vehicles, such as passenger cars, trucks or motorcycles, has been steadily increasing for years. This is done in addition to the reduction of emissions and / or
    Fuel consumption or the increase in ride comfort, among other things, also to cope with the ever increasing traffic in conurbations traffic. Driver assistance systems or assistance systems are generally responsible for this, which use information about the vehicle environment, in particular and the probable route, via in-vehicle sensors and / or via communications with other vehicles and / or stationary stations or services to assist the driver in standard driving situations and / or to support extreme situations in the form of indications and / or to actively intervene in vehicle behavior. Frequently at least as part of the above sensors radar sensors are used, which monitor the immediate environment of the vehicle with respect to obstacles and / or preceding vehicles or the like. For evaluating such assistance systems, it is known to supply this information via a, in particular virtual, test scenario and to evaluate the response of the assistance system.
    In order to be able to process a possibly high-frequency radar signal of the radar sensor with regard to the test scenario, a frequency conversion of the signal to a lower frequency range is usually necessary ("downconversion"), for example by mixing the signal at a mixer stage using a local frequency Oscillator is realized:
    The document US 8 248 297 B1 relates to a system for the arrangement between a radar transmitter of a radar environment simulator and a radar receiver coupled to a radar target. The system has a power divider for sharing a
    Input radar signal, a local oscillator and two mixers, which are each arranged in a path of a signal component of the power divider on.
    The document US 3 903 521 relates to a device for generating a test signal, wherein two input signals are recorded and synchronized for a radar system. When working on a signal with a typical duty cycle of 8280 per second in an acceleration sawtooth generator, the power stroke is divided by a frequency divider of the acceleration sawtooth generator by a factor of two. This signal is limited in further processing and supplied to a Frequenzumwand- ler whose task is the translation of the frequency of the signal in a frequency range corresponding to the frequency range at a pick-up point of typical radar systems.
    The document CN 105 510 980 A relates to a radar echo simulator which performs a two-stage frequency conversion of a radar signal of an anticollision radar provided in a vehicle of millimeter waves in centimeter waves by means of a so-called "down conversion module", so that the radar signal is analyzed by a signal processor and thereby according to a parameter input, an analog echo signal can be generated.
    It is an object of the present invention to improve radar speech emulation, in particular to compress a broadband radar signal substantially without or at least with reduced quality loss for processing in a radar target emulator.
    This object is achieved in the sense of the present invention by a device and a method according to the independent claims and a test bench with such a device.
    One aspect of the present invention relates to a device for converting a radar signal for further signal processing, in particular in a test bench with a radar target emulator, which has a divider arrangement and a multiplication arrangement. The divider arrangement preferably has a divider device, which is set up to reduce a frequency and a bandwidth of the radar signal by a first factor for further signal processing. The multiplication arrangement preferably has a multiplication device which is set up to increase a frequency and a bandwidth of the radar signal after the further signal processing, in particular by the radar target emulator, by the first factor.
    This is particularly advantageous because the splitter device can convert the radar signal without mixing with a signal component of a local oscillator, which would degrade the signal quality of the radar signal by phase noise, for further signal processing, in particular for processing in a radar target emulator. Analogously, this is particularly advantageous since the multiplication device can convert the radar signal after further signal processing, in particular after processing in the radar target emulator, without mixing with a signal component of a local oscillator, in particular for transmission to a radar sensor.
    In this case, within the splitter arrangement or within the multiplication arrangement, preferably both the frequency and the bandwidth are substantially simultaneously, i. in the context of a single signal processing performed on the radar signal, reduced or increased by the first factor. The reduction of the bandwidth of the radar signal in the splitter arrangement by the splitter allows compression of the radar signal or its signal spectrum, by which the radar signal can be compressed without loss of information. As a result, radar signals with a high bandwidth, such as at 4 GHz, compressed in such a way can also be processed by radar target emulators with a lower bandwidth, in particular digitally.
    The reduction of the frequency and in particular of the bandwidth by means of the divider device and analogously the increase of the frequency and in particular of the bandwidth by means of the multiplication device is carried out in the sense of the invention preferably substantially analog or at least partially analog. For this purpose, the dividing device and / or the multiplying device advantageously each have an analog circuit or is formed by it. As a result, the signal can be compressed or decompressed without artefacts caused by digital processing, such as discrete sampling, or at least information losses.
    Overall, the invention makes it possible to improve radar speech emulation, in particular to compress a broadband radar signal substantially without or at least with reduced quality loss for processing in a radar target emulator.
    None of the devices known from the prior art discloses a splitter arrangement with a splitting device in order to reduce the frequency and the bandwidth of a radar signal in particular equally for further signal processing by a first factor. Moreover, none of the devices known from the prior art discloses to provide in a multiplication arrangement a multiplier device which reduces the frequency and bandwidth of the radar signal further processed, in particular in a radar target emulator, whose frequency and bandwidth have previously been reduced by the first factor, in particular equally again to increase the first factor.
    A "test stand" in the sense of the present invention is in particular an arrangement by which a radar signal emitted by a radar sensor can be received and modified in such a way that the modified radar signal contains information regarding a test scenario, i. In particular, information regarding the position and the distance of emulated objects, contains, and may optionally be modified again provided to the radar sensor. The information relating to the test scenario is included, for example, in the amplitude and / or the phase of the modified radar signal. A test stand can thus be used, for example, to test a driver assistance system of a vehicle, which is supplied to the test bench by a radar sensor of the vehicle, which is connected to the driver assistance system, modified and returned to the radar sensor as a modified radar signal.
    A "divider arrangement" in the sense of the present invention is in particular an arrangement of at least one analog and / or digitally executed signal-processing component, in particular a divider. By means of the at least one signal processing component, an input signal provided at the divider arrangement with an input frequency, in particular in an operating frequency range of the radar sensor, and an input bandwidth can be converted into a working signal having an operating frequency and a working bandwidth, in particular output to a radar target emulator. The operating frequency is reduced by a factor compared to the input frequency, and the working bandwidth is reduced by the same or a different factor from the input bandwidth.
    A "multiplication arrangement" in the sense of the present invention is in particular an arrangement of at least one analog and / or digitally executed signal-processing component, in particular a multiplication device. By means of the at least one signal-processing component, a working signal with an optionally modified working frequency and an optionally modified working bandwidth provided at the multiplication arrangement can be converted into an output signal having an output frequency and an output bandwidth, in particular transmitted to a radar sensor. In this case, the output frequency is increased by a factor compared to the optionally modified operating frequency, and the output bandwidth is increased by the same or a different factor compared to the optionally modified working bandwidth.
    A "divider device" in the sense of the present invention is set up in particular to carry out a deconvolution ("deconvolution") in the frequency space on a radar signal supplied to the divider device, in particular into two equal radar signals which have been deployed. This corresponds mathematically to the dragging of a root from the radar signal in the time domain, in particular the drag of the square root. This results preferably in a shift of the frequency of the radar signal towards lower frequencies, and a reduction in the bandwidth of the radar signal.
    A "multiplication device" in the sense of the present invention is in particular configured to perform a convolution, in particular with itself, on the radar signal supplied to the multiplication device in the frequency domain. This corresponds mathematically to a multiplication of the radar signal in the time domain, in particular the squaring of the radar signal. Therefore, the multiplier is also referred to as a "multiplier". This results preferably in a shift of the frequency of the radar signal towards higher frequencies, and an increase in the bandwidth of the radar signal.
    In a preferred embodiment, the divider device has at least one, in particular regenerative, frequency divider, which is preferably designed as an electronic, at least partially analog, circuit and is also preferably configured to set the frequency of a radar signal applied to the frequency divider in a predetermined, preferably integer or rational, Divide ratio, which corresponds in particular to the first factor to divide. The, in particular regenerative, frequency divider is optionally also referred to as "Miller frequency divider" and is preferably adapted to mix an input signal applied to the frequency divider means of a mixer component with an optionally amplified, feedback signal of the mixer component.
    In this case, the bandwidth of the radar signal divided by the frequency divider is preferably divided into the predetermined, preferably integer or rational, divisional ratio analogously to frequency, the dividing ratio in particular corresponding to the first factor.
    The division of the frequency and the bandwidth of the radar signal applied to the frequency divider is preferably carried out in the frequency domain, which corresponds to the pulling of a root in the time or signal space.
    In a further preferred embodiment, the splitter arrangement further has a splitter module, which is set up to control a frequency of the radar signal, in particular of the input signal applied to the splitter arrangement or of the radar signal output by the at least one splitter device, by a second factor for further signal processing, in particular for provision at the at least one divider device or at the radar target emulator. In this case, the multiplication arrangement preferably has a multiplication module, which is set up, a frequency of the radar signal after the further signal processing, in particular the output from the Radarzielemulator optionally modified working signal to the second factor, in particular for providing at least one multiplication device or for transmission to the radar sensor, increase.
    As a result, the frequency of the radar signal, in particular of the input signal applied to the divider arrangement, can be shifted into a range, in particular below a predetermined frequency limit value, in which the at least one divider device can process the radar signal, in particular divide its frequency and bandwidth. The frequency of the radar signal is preferably reduced to below 25 GHz, preferably below 15 GHz, in particular below 10 GHz.
    Furthermore, the frequency of the radar signal, preferably of the optionally modified working signal processed by the at least one multiplication device, can thereby be adapted to the frequency of the input signal initially provided at the divider arrangement, so that the radar sensor receives the output signal of the multiplication arrangement essentially in a frequency working range of the radar sensor can be transmitted.
    A "frequency working range" of a signal processing component, such as the radar sensor, the Radarzielemulators, the divider and / or the Vievielfachungseinrichtung, in the context of the present invention is in particular a frequency range in which the signal processing component is a signal applied to her or received by her signal reliable and precise, in particular error and / or artifact-free, can handle. In other words, a frequency working range of a signal processing component corresponds to the frequency range in which the signal processing component is provided for operation.
    A "bandwidth working range" of a signal-processing component, such as the radar sensor, the Radarzielemulators, the divider and / or the multiplier, in the context of the present invention is in particular a bandwidth range in which the signal processing component a signal applied to her or received by her signal reliable and precise, in particular error and / or artifact-free, can handle. In other words, a bandwidth working area of a signal processing component corresponds to the bandwidth area in which the signal processing component is intended for operation.
    In a further preferred embodiment, the divider module and / or the multiplication module has an oscillator component for generating a conversion signal having a conversion frequency and a mixer component for mixing the conversion signal with the radar signal provided at the divider module or multiplication module. By mixing the conversion signal with the radar signal is a reliable and precise, especially adaptable to the frequency working range of the divider or the radar sensor, reduction or increase in the frequency of the radar signal, in particular provided at the divider arrangement input signal and / or of the at least one Multiplying device processed, possibly modified working signal to the second factor allows.
    In a further preferred embodiment, the first factor is in the range 1 to 10, preferably in the range 1.5 to 6, in particular in the range 2 to 4. This can be a radar sensor with a frequency working range above 60 GHz and a bandwidth range between 10 MHz and 20 GHz, preferably between 100 MHz and 10 GHz, in particular radiated between 250 MHz and 5 GHz radar signal, which is preferably provided as input to the splitter arrangement with the appropriate frequency and bandwidth, processed reliably as a working signal with a contrast reduced frequency or bandwidth from Radarzielemulator or subsequently to the radar sensor having a frequency within its frequency working range and a bandwidth within its bandwidth working range are transmitted.
    A second aspect of the invention relates to a test stand for processing a radar signal having a radar signal converting apparatus according to the first aspect of the invention and a radar target emulator, the radar target modulator being connected to the divider array and the multiplier array, i. signal leading connected, and is adapted to process the radar signal provided by the divider arrangement whose frequency and bandwidth is reduced by at least the first factor by means of the divider arrangement, in particular to apply to a Doppler shift, temporally delay and / or modulate, the correspondingly processed radar signal characterizes at least one emulated object.
    This is particularly advantageous since the combination of a device according to the invention for converting a radar signal and the downstream Radarzielemulator radar signals from Radarzielemulator can process precisely and reliably, of a spatially and temporally high-resolution radar sensor at high frequencies, above about 60 GHz, and large bandwidths, such as above 250 MHz, are emitted, even if such high frequencies and such large bandwidths of conventional Radarzielemulatoren can not or insufficiently processed. The resulting from the combination test bench therefore also allows the use of conventional Radarzielemulatoren that designed technically straightforward and in which cheap electronic components are installed, in conjunction with special and / or very powerful, especially in unusual frequency and / or bandwidth ranges working radar - sensors. In other words, the test stand according to the invention can already be adapted to different radar systems used in different vehicles with different adaptations of the divider arrangement and the multiplication arrangement or the signal processing components contained therein, in particular the divider and the multiplier, and / or the divider module Frequency work areas and / or bandwidth work areas.
    In a further preferred embodiment, the radar target emulator is configured to receive the radar signal provided by the divider arrangement, whose frequency is less than 10 GHz, preferably less than 5 GHz, in particular less than 2.5 GHz, and whose bandwidth is less than 4 GHz, preferably less than 2 GHz, in particular less than 1 GHz, is to be processed. In other words, the radar target emulator preferably has an operating frequency range below 10 GHz and a working bandwidth range below 2 GHz. As a result, the processing of the radar signal, in particular the working signal, can be carried out reliably.
    A third aspect of the invention relates to a method for converting a radar signal for further processing in a test rig with a radar target emulator, wherein a frequency and a bandwidth of the radar signal is reduced by a first factor for further signal processing, and wherein a frequency and a bandwidth of the radar signal after the further signal processing is increased by the first factor.
    The features and advantages described in relation to the first aspect of the invention and its advantageous embodiment also apply to the second and third aspects of the invention and its advantageous embodiment and vice versa.
    The invention will be explained in more detail below with reference to non-limiting exemplary embodiments, which are illustrated in the figures. In it show at least partially schematically:
    Fig. 1 is a circuit diagram of an apparatus for converting a radar signal according to a preferred embodiment of the present invention; and
    Fig. 2 is a circuit diagram of a test stand according to a preferred embodiment of the present invention.
    1 shows a circuit diagram of a device 1 for converting a radar signal for further signal processing, in particular in a test stand with a radar target emulator, in a preferred embodiment of the present invention. The device 1 has a splitter arrangement 2 and a multiplication arrangement 3, in which preferably a plurality of signal-processing components 4, 4 ', 5, 5' are arranged one behind the other in the signal flow direction and interconnected, i. signal-conducting connected to each other, are. The splitter arrangement 2 is in this case preferably set up to record a radar signal provided at the splitter arrangement 2 and therefore also designated as input signal E and as a radar signal, in particular working signal W, with a frequency or bandwidth reduced in relation to a frequency and bandwidth of the input signal E. issue. The work signal W thus output can then, after the further signal processing, which is indicated by the dashed line, as processed or modified work signal W 'of the multiplier 3 and recorded as a radar signal, in particular output signal A, with respect to the frequency and bandwidth of the Modified working signal W 'increased frequency and bandwidth are spent again.
    In this case, a divider device 4 is preferably provided within the divider arrangement 2, which is set up to convert the radar signal present at the divider device 4, in particular an intermediate signal Z, into the operating signal W, so that the frequency and the bandwidth of the operating signal W are opposite the frequency or ., The bandwidth of the voltage applied to the divider 4 intermediate signal Z are each reduced by a first factor. In other words, the divider device 4 is preferably set up to compress the bandwidth of the radar signal applied to the divider device 4 as an intermediate signal Z, so that the radar signal output by the divider device 4 as the work signal W is one of the bandwidth of the input signal E by the first Factor has reduced bandwidth.
    The divider 4 can be embodied as a regenerative frequency divider which has a mixer component 4a for mixing the intermediate signal Z applied to the frequency divider with a feedback signal R, a filter component 4b, in particular a low-pass filter, for filtering one or more frequency ranges from the mixer component 4a output mixed signal and a gain component 4c for amplifying the output from the filter component 4b filtered signal. During operation of the frequency divider, a part of the signal output by the mixer component 4a, in particular after passing through the filter component 4b and the amplification component 4c, is supplied again to the mixer component 4a as a feedback signal R. As a result, it is possible to isolate and amplify frequency components, in particular integer frequency fractions, so that the operating signal W output by frequency divider during operation of the frequency divider has a frequency reduced by the first factor and bandwidth reduced by the first factor compared with the intermediate signal Z applied to the frequency divider.
    When the divider 4 is implemented in the described preferred manner as an analog circuit, no loss of information occurs in the compression of the bandwidth of the intermediate signal Z.
    Since the filter component 4b of the divider 4 usually operates reliably only in a selected frequency range, for example, filters all frequency components of the signal supplied to it above a predetermined frequency threshold, for example above 10 GHz, it may be necessary to convert the frequency of the input signal E into a To convert frequency that is within the selected frequency range of the filter component 4b. In other words, if necessary, the input signal E must be prepared for processing in the divider 4, in particular converted into the intermediate signal Z with a reduced frequency.
    For this purpose, in the present example, a divider module 5 is provided within the divider assembly 2, which is adapted to reduce the frequency of the input signal E by a second factor in such a way that the frequency of the resulting radar signal output from the divider module 5, the is referred to as intermediate signal Z, is in the frequency working range of the divider 4, ie the intermediate signal Z can be reliably and precisely processed by the divider 4.
    The divider module 5 preferably has a mixer component 5a for mixing the input signal E present at the divider module 5 with a conversion signal K and an oscillator component 5b for generating the conversion signal K. Optionally, the splitter module 5 may also comprise a filter component and an amplifier component (not shown) by which the mixed signal output from the mixer component 5a can be post-processed, in particular so that the frequency of the intermediate signal Z is reduced by the second factor from the frequency of the input signal E is. When mixing the input signal E with the conversion signal K, only the frequency of the input signal E is influenced, but not its bandwidth.
    Overall, therefore, within the divider arrangement 2, the frequency of the radar signal provided as input signal E can be reduced by a factor which results from the multiplication of the first factor by the second factor. The thus executed frequency change can also be referred to as "frequency conversion".
    The bandwidth change performed thereby within the divider arrangement 2, in which the bandwidth of the radar signal is reduced by the second factor, can also be referred to as "bandwidth compression".
    The multiplication arrangement 3 is similar in structure to the divider arrangement 2. In particular, the multiplication arrangement 3 may have respective signal processing components 4 ', 5' corresponding to the signal processing components 4, 5 of the divider arrangement 2 but oppositely operating signal processing components 4 ', 5'. Instead of the divider device 4, the multiplication device 3 may have approximately a multiplication device 4 ', which is preferably configured to convert the modified working signal W' present at the multiplier device 4 'into a further intermediate signal Z' whose frequency and bandwidth are opposite the frequency or bandwidth of the modified working signal W 'are increased by the first factor. In addition, the divider arrangement 3, instead of the divider component 5, preferably has a multiplication component 5 ', which is preferably set up to convert the further intermediate signal Z' present at the multiplication component 5 'into the output signal A whose frequency is higher than the frequency of the further intermediate signal Z. 'increased by the second factor.
    The multiplication device 4 'is preferably designed as a multiplier, in particular an analog multiplier.
    According to the divider component 5, the multiplication component 5 'preferably has a mixer component 5a for mixing the further intermediate signal Z' with a conversion signal K generated by an oscillator component 5b of the divider component 5. When the further intermediate signal Z 'is mixed with the conversion signal K, however, the frequency of the further intermediate signal Z' is increased by the second factor to the frequency of the output signal A.
    The signal-processing components 4, 4 ', 5, 5' in the splitter arrangement 2 and the multiplication arrangement 3 are preferably matched to one another such that the frequency and bandwidth of the output signal A essentially correspond to the frequency or bandwidth of the input signal E. In particular, the multiplication arrangement 3, in particular the multiplication device 4 'and the multiplication module 5', can be configured to carry out the frequency change executed within the splitter arrangement 2 on the radar signal provided as input signal E and the bandwidth change performed on the provided radar signal after the further signal processing, for example in a radar target emulator , in particular on the processed or modified radar signal provided as the work signal W ', can be substantially reversed or compensated for.
    Although only one divider 4, one multiplying device 4 ', one divider module 5 and one multiplying module 5' are shown and described in the present example, it is in principle possible to use a plurality of these signal processing components 4, 4 ', 5, 5' in the divider arrangement 2 or the multiplication arrangement 3 to provide. This is particularly advantageous if, for example, a single divider module 5 is insufficient to reduce the frequency of the input signal E to the frequency of the intermediate signal Z for processing by the divider 4, and / or a single divider 4 is insufficient to control the bandwidth of the input signal E to reduce the bandwidth of the working signal A for further signal processing, for example by a Radarzielemulator. By combining a plurality of signal processing components 4, 4 ', 5, 5', the functionality of the device 1 can be adapted to the requirements of the radar target emulator or of the individual signal processing components 4, 4 ', 5, 5'.
    It does not matter in which order the radar signal is processed by the signal-processing components 4, 4 ', 5, 5', as long as the frequency and / or the bandwidth of the voltage applied to a signal-processing component 4, 4 ', 5, 5' Signal is in the frequency or bandwidth working range of the corresponding component.
    Particularly advantageously, it is also possible to form one or more divider modules 5 and one or more multiplication modules 5 such that the respective mixer components 5a mix the radar signal applied to them with a conversion signal K of one or more common oscillator components 5b. In particular, a multiplication module 5 can thus be provided for each divider module 5, in which the frequency of the applied radar signal is reduced on the basis of the conversion signal K provided by the oscillator component 5b by one, in particular the second factor, in which the frequency of the applied radar signal Basis of the same of the same oscillator component 5b provided the same conversion signal K by the same, in particular the second factor is increased. In other words, at least one divider module 5 and at least one multiplying module 5 'may be configured to share an oscillator component 5b together. Thereby, the frequency of the radar signal processed in the multiplier array 3 can be reliably increased to the same extent as previously reduced in the radar signal processed in the divider array 2.
    2 shows the circuit diagram of a test stand 10 with a device 1 for converting a radar signal S for further signal processing in a radar target emulator 20 according to a preferred embodiment of the present invention. The test stand 10 has a receiving device RX for receiving a radar signal S emitted by a radar sensor RS installed, for example, in a motor vehicle, and a transmitting device TX for transmitting the processed radar signal S 'back to the radar sensor RS. In this case, the radar sensor RS has a frequency working range and a bandwidth working range within which it can transmit or receive radar signals S, S '.
    The radar target emulator 20 is preferably configured to emulate a test scenario, i. to emulate one or more radar targets, in particular a traffic situation, and to process a work signal W applied to it, in particular to apply a Doppler shift, to delay in time and / or to modulate that the processed work signal W 'output by the radar target emulator 20 also sometimes referred to as a modified working signal, contains information regarding the emulated test scenario. In this case, the radar target emulator 20 operates in a frequency working range or bandwidth working range different from the frequency working range and bandwidth working range of the radar sensor RS, so that a conversion of the radar signal S received by the receiving device RX into the working signal W is necessary.
    For this purpose, the device 1 of the receiving device RX and the Radarzielemulator 20 is interposed and has a divider assembly 2, by means of which the radar signal S provided as an input signal E to the divider assembly 2 can be converted into the working signal W. As described in connection with FIG. 1, a frequency conversion and a bandwidth compression are carried out in which the frequency of the input signal E by a factor resulting from the multiplication of a first factor with a second factor or the bandwidth of the input signal E, respectively the first factor is reduced.
    In order to be able to transmit the operating signal W 'processed and output by the radar target emulator 20 back to the radar sensor S, an opposite conversion of the processed and output working signal W' into an output signal A is accordingly necessary. By means of a multiplication arrangement 3 of the device 1, which is interposed between the radar target emulator 10 and the transmitting device TX, the frequency and bandwidth of the processed and output working signal W 'reduced during the frequency conversion and bandwidth compression can be increased again, so that they essentially correspond to the frequency or frequency Bandwidth of the radar sensor RS originally radiated signal S corresponds. The output signal A can then be sent by the transmitting device TX as a processed radar signal S 'back to the radar sensor RS and the information contained therein with respect to the emulated test scenario, for example, from a driver assistance system or a vehicle function of the radar sensor RS having vehicle for testing the Driver assistance system or the vehicle function are used.
    LIST OF REFERENCES: 1 device for converting a radar signal 2 divider arrangement 3 multiplication arrangement 4 divider 4a mixer component 4b filter component 4c amplifier component 4 'multiplier 5 divider module 5a mixer component 5b oscillator component 5' multiplication module 10 test bench 20 radar target emulator E input signal A output signal Z intermediate signal Z 'further intermediate signal W operating signal W' processed working signal S radar signal S 'processed radar signal K conversion signal RS radar sensor RX receiving unit TX transmitting unit
    权利要求:
    Claims (8)
    [1]
    claims
    1. Device (1) for converting a radar signal (S) for further Signalver processing in a test stand (10) with a Radarzielemulator (20), comprising a divider assembly (2) with a divider (4), which is adapted to a frequency and a bandwidth of the radar signal (S) to reduce a first factor for further signal processing, and a multiplier array (3) having a multiplier (4 ') arranged to frequency and bandwidth the radar signal (S) after the other Signal processing to increase the first factor.
    [2]
    2. Device (1) according to claim 1, wherein the divider (4) has at least ei NEN, in particular regenerative, frequency divider.
    [3]
    3. Device (1) according to one of claims 1 to 2, wherein the divider arrangement (2) further comprises a divider module (5) which is adapted to reduce a frequency of the radar signal (S) by a second factor for further signal processing , and wherein the multiplication arrangement (3) further comprises a multiplication module (5 ') which is set up to increase a frequency of the radar signal (S) after the further signal processing by the second factor.
    [4]
    4. Device (1) according to one of claims 1 to 3, wherein the divider module (5) and / or the multiplication module (5 ') an oscillator component (5b) for generating a conversion signal (K) having a conversion frequency and a mixer component (5a) for mixing the conversion signal (K) with the radar signal (S) provided at the divider module (5) or multiplication module (5 ').
    [5]
    5. Device (1) according to any one of claims 1 to 4, wherein the first factor in the range of 1 to 10, preferably in the range 1.5 to 6, in particular in the range 2 to 4.
    [6]
    A test rig (10) adapted to process a radar signal (S), comprising: a device (1) for converting the radar signal (S) according to any one of claims 1 to 5; and a radar target emulator (20), which is connected to the divider arrangement (2) and the multiplier arrangement (3) and adapted to provide the radar signal (S) provided by the divider arrangement (2), the frequency and bandwidth of which by means of the divider arrangement (2) is reduced by the first factor to be processed in such a way, in particular to apply a Doppler shift, to delay in time and / or to modulate that the correspondingly processed radar signal (S) characterizes at least one emulated object.
    [7]
    7. test stand (10) according to claim 6, wherein the Radarzielemulator (20) is adapted to the provided by the splitter assembly (2) radar signal (S) whose frequency is less than 10 GHz, preferably less than 5 GHz, in particular less than 2 , 5 GHz, and whose bandwidth is less than 4 GHz, preferably less than 2 GHz, in particular less than 1 GHz.
    [8]
    8. A method for converting a radar signal (S) for further processing in a test stand (10) with a Radarzielemulator (20), wherein a frequency and a bandwidth of the radar signal (S) is reduced by a first factor for further signal processing, and wherein a Frequency and a bandwidth of the radar signal (S) after the further signal processing by the first factor is increased.
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    同族专利:
    公开号 | 公开日
    EP3692389A1|2020-08-12|
    KR20200068694A|2020-06-15|
    JP2020536250A|2020-12-10|
    AT520578B1|2021-01-15|
    WO2019068125A1|2019-04-11|
    US20210072366A1|2021-03-11|
    CN111356933A|2020-06-30|
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    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5892479A|1997-07-30|1999-04-06|The United States Of America As Represented By The Secretary Of The Army|Electromagnetic target generator|
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    US6346909B1|2000-09-06|2002-02-12|The United States Of America As Represented By The Secretary Of The Army|System for generating simulated radar targets|KR102316800B1|2021-07-01|2021-10-25|한화시스템 주식회사|Apparatus and method for converting radar signal|
    KR102361249B1|2021-08-02|2022-02-14|오픈엣지테크놀로지 주식회사|Method for optimizing broadcast multiply and a hardware accelerator and computing device using the same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50857/2017A|AT520578B1|2017-10-06|2017-10-06|Device and method for converting a radar signal and test bench|ATA50857/2017A| AT520578B1|2017-10-06|2017-10-06|Device and method for converting a radar signal and test bench|
    JP2020519273A| JP2020536250A|2017-10-06|2018-10-08|Equipment and methods and test stands for converting radar signals|
    PCT/AT2018/060236| WO2019068125A1|2017-10-06|2018-10-08|Device and method for converting a radar signal, and test bench|
    US16/753,866| US20210072366A1|2017-10-06|2018-10-08|Device and method for converting a radar signal, and test bench|
    CN201880065320.1A| CN111356933A|2017-10-06|2018-10-08|Device and method for converting radar signals and test bench|
    EP18786660.3A| EP3692389A1|2017-10-06|2018-10-08|Device and method for converting a radar signal, and test bench|
    KR1020207012973A| KR20200068694A|2017-10-06|2018-10-08|Apparatus and method for converting radar signals, and test bench|
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