CN108445460A - Detect the measuring system and measurement method of ADAS car radar rate accuracies - Google Patents
Detect the measuring system and measurement method of ADAS car radar rate accuracies Download PDFInfo
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- CN108445460A CN108445460A CN201810270783.3A CN201810270783A CN108445460A CN 108445460 A CN108445460 A CN 108445460A CN 201810270783 A CN201810270783 A CN 201810270783A CN 108445460 A CN108445460 A CN 108445460A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- Radar, Positioning & Navigation (AREA)
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- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a kind of measuring system of detection ADAS car radar rate accuracies comprising：Front ends of millimeter waves module, the front ends of millimeter waves module are used to receive the millimeter-wave signal that ADAS car radars are sent out and carry out down coversion, millimeter-wave signal are down-converted to intermediate frequency, and export intermediate-freuqncy signal outward；Digital intermediate-frequency receiver, the digital intermediate-frequency receiver improve intermediate-freuqncy signal for receiving the intermediate-freuqncy signal that the front ends of millimeter waves module is sent out；Host is controlled, the control host is for dispatching and controlling the front ends of millimeter waves module, digital intermediate-frequency receiver, and the intermediate-freuqncy signal for acquiring digital intermediate-frequency receiver transmission carries out analysis and obtains signal parameter.The precision that radar velocity measurement can be calculated by the measuring system understands the performance parameter of car radar this makes it possible to more detailed, and then can effectively improve the quality of car radar.
Description
Technical field
The invention belongs to advanced driving assistance systems（ADAS）Technical field is related to a kind of ADAS Automobile Millimeter Wave Radars survey
Test system more particularly to a kind of measurement method for ADAS car radar rate accuracies.
Background technology
In current ADAS systems, millimetre-wave radar plays critically important effect, and millimetre-wave radar can be with probe vehicle
The barrier of surrounding, can measure size, speed, distance, angle of barrier etc..In Automobile Millimeter Wave Radar test, milli
The functional test of metre wave radar is the emphasis in all tests, to carry out the ranging of radar when functional test, test the speed, angle measurement
Degree surveys the functional tests such as target sizes.There are limitations below for the test of present ADAS car radar rate accuracies.
First, for the test of Automobile Millimeter Wave Radar rate accuracy in ADAS, there is no targetedly survey very much at present
The test software of method for testing and maturation.Secondly, some domestic research units or automobile vendor are mainly set using import tradition
It is standby to carry out MMW RADAR SIGNAL USING acquisition process and the analysis of some signals, but these equipment are difficult direct progress speed essence substantially
The test of degree, the work for needing some to post-process, could analyze and measure the precision to test the speed, flexibility is not high enough.In view of this,
Nowadays there is an urgent need to design a kind of measuring system and measurement method specifically for ADAS car radar rate accuracies, to overcome
Some defects present in existing millimetre-wave radar test.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of special measurement ADAS automobile thunders
Up to the measuring system of rate accuracy.
In order to achieve the above objects and other related objects, the present invention provides a kind of detection ADAS car radar rate accuracies
Measuring system comprising：Front ends of millimeter waves module, the front ends of millimeter waves module is for receiving the milli that ADAS car radars are sent out
Metric wave signal carries out down coversion, millimeter-wave signal is down-converted to intermediate frequency, and export intermediate-freuqncy signal outward；Digital medium frequency reception
Machine, the digital intermediate-frequency receiver are used to receive the intermediate-freuqncy signal that the front ends of millimeter waves module is sent out, and to intermediate-freuqncy signal
It is improved；Host is controlled, the control host is for dispatching and controlling the front ends of millimeter waves module, digital medium frequency reception
Machine, and the intermediate-freuqncy signal for acquiring digital intermediate-frequency receiver transmission carries out analysis and obtains signal parameter.
Preferably, the control host includes：Digital intermediate frequency signal acquisition processing module, the digital intermediate frequency signal acquisition
Processing module is used to acquire the intermediate frequency I/Q signal that digital intermediate-frequency receiver is sent and is handled；FM demodulation modules, the FM
The intermediate frequency I/Q signal that demodulation module is used to handle intermediate frequency digital signal acquisition process module demodulates；Chirp Rate are calculated
Module, the Chirp Rate computing modules carry out the calculating of Chirp Rate for the signal after being demodulated according to FM；Chirp
Extraction module, the Chirp extraction modules extract the one of user's predefined for being detached to multistage Chirp signals
A little effective Chirp, remove the unwanted data of user；Data fitting module, the data fitting module are used for extracting
Every section of Chirp original signal carry out data fitting, obtain ideal Chirp signals；Index computing module, the index calculate
Chirp signals after module is used to be demodulated according to FM calculate automobile millimeter with the ideal Chirp signals after progress data fitting
The Chirp signal index parameters of wave radar transmitter transmitting.
Preferably, the control host uses NI LabVIEW pattern development platforms.
Preferably, the ADAS car radars are the Automobile Millimeter Wave Radar of 24G or 77G.
The invention also discloses a kind of measurement methods of detection ADAS car radar rate accuracies comprising following steps：
1）The millimeter-wave signal that sent out to ADAS car radars simultaneously carries out down coversion, and millimeter-wave signal is down-converted to intermediate frequency,
2）And intermediate-freuqncy signal is improved；
3）Intermediate-freuqncy signal after acquisition conditioning, and calculate analyzing and obtain signal parameter.
Preferably, step 3）In mainly comprise the following specific steps that：
A) it carries out the acquisition of the intermediate frequency I/Q signal of ADAS car radars and is handled；
b）FM demodulation is carried out to the I/Q data in treated signal, obtains original modulated signal；
c）Signal after being demodulated according to FM carries out the calculating of Chirp Rate；
d）Multistage Chirp signals are detached, effective Chirp of user's predefined is extracted, it is unwanted to remove user
Data；
e）The every section of Chirp original signal extracted carries out data fitting, obtains ideal Chirp signals；
f）The ideal Chirp signals after Chirp signals and progress data fitting after being demodulated according to FM calculate relevant index
Parameter.
Preferably, signal processing includes signal equalization, filtering, amplitude transformation in step a).
Preferably, data fitting is mainly original to the every section of Chirp extracted using least square method in step e)
Signal carries out data fitting.
Preferably, step f）In index of correlation parameter include the linearity, chirp rate, maximum frequency error, average frequency
Rate error, the precision of velocity test.
Preferably, according to step f）The index parameter of calculating calculates radar by the relationship of Doppler frequency and speed and surveys
The precision of speed.
As described above, the measuring system and measurement method of the detection ADAS car radar rate accuracies of the present invention are with following
Advantageous effect：The technical solution can believe the Chirp that the ADAS Automobile Millimeter Wave Radar transmitters of 24GHz and 77GHz emit
It number is analyzed, passes through the parameters such as chirp rate, the linearity, maximum frequency error, the average frequency error for analyzing Chirp signals
It will be seen that radar transmitter transmission signal quality, and radar velocity measurement can be calculated by the relationship of Doppler frequency and speed
Precision, this makes it possible to the more detailed performance parameters for understanding car radar, and then can effectively improve the matter of car radar
Amount.
Description of the drawings
Fig. 1 is the frame assumption diagram of measuring system of the embodiment of the present invention.
Fig. 2 is the flow chart of measurement method of the embodiment of the present invention.
Fig. 3 is the software algorithm interface of measurement method of the embodiment of the present invention.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
Please refer to Fig.1,2,3.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, the present invention provides a kind of measuring system of detection ADAS car radar rate accuracies, mainly wrap
It includes：Front ends of millimeter waves module 1, digital intermediate-frequency receiver 2 and control 3 three parts of host.Front ends of millimeter waves module 1 is for receiving
The millimeter-wave signal that ADAS car radars 4 are sent out carries out down coversion, millimeter-wave signal is down-converted to intermediate frequency, and outward in output
Frequency signal.Digital intermediate-frequency receiver 2 is used to receive the intermediate-freuqncy signal that the front ends of millimeter waves module is sent out, and to intermediate-freuqncy signal
It is improved.Control host 3 acquires number for dispatching and controlling the front ends of millimeter waves module, digital intermediate-frequency receiver
The intermediate-freuqncy signal that word formula intermediate-frequency receiver is sent carries out analysis and obtains signal parameter.
Controlling host 3 includes：Digital intermediate frequency signal acquisition processing module, FM demodulation modules, Chirp Rate computing modules,
Chirp extraction modules, data fitting module, index computing module.Digital intermediate frequency signal acquisition processing module is for acquiring number
The intermediate frequency I/Q signal of formula intermediate-frequency receiver transmission is simultaneously handled.FM demodulation modules are used for intermediate frequency digital signal acquisition process mould
The intermediate frequency I/Q signal of block processing is demodulated.Hirp Rate computing modules carry out Chirp for the signal after being demodulated according to FM
The calculating of Rate.Chirp extraction modules extract some of user's predefined for being detached to multistage Chirp signals
Effective Chirp removes the unwanted data of user.Data fitting module is used for every section of Chirp original signal to extracting
Data fitting is carried out, ideal Chirp signals are obtained.Index computing module be used for demodulated according to FM after Chirp signals and into
Ideal Chirp signals after the fitting of row data calculate the Chirp signal index parameters of Automobile Millimeter Wave Radar transmitter transmitting.
The control host is realized using NI LabVIEW pattern development platforms, stronger with modularization, is easy extension,
And there is very friendly interface（As shown in Figure 3）.The measuring system of detection ADAS car radar rate accuracies is mainly applied
In the ADAS Automobile Millimeter Wave Radars of 24G or 77G.
This patent also discloses a kind of measurement method of detection ADAS car radar rate accuracies, includes mainly following step
Suddenly：The millimeter-wave signal that sends out first to ADAS car radars simultaneously carries out down coversion, and millimeter-wave signal is down-converted to intermediate frequency,
Then it and to intermediate-freuqncy signal improves；Intermediate-freuqncy signal after finally acquisition conditioning, and calculate analyzing and obtain signal parameter.
Analysis is wherein calculated to include the following steps：
A) carry out ADAS car radars intermediate frequency I/Q signal acquisition and handled, signal processing mainly include signal equalization,
Filtering, amplitude transformation and etc.；
b）FM demodulation is carried out to the I/Q data in treated signal, obtains original modulated signal；
c）Signal after being demodulated according to FM carries out the calculating of Chirp Rate；
d）Multistage Chirp signals are detached, effective Chirp of user's predefined is extracted, it is unwanted to remove user
Data；
e）The every section of Chirp original signal extracted carries out data fitting, mainly using least square method to extracting
Every section of Chirp original signal carry out data fitting, obtain ideal Chirp signals；
f）The ideal Chirp signals after Chirp signals and progress data fitting after being demodulated according to FM calculate relevant index
Parameter includes mainly the parameters such as the linearity, the precision of chirp rate, maximum frequency error, average frequency error, velocity test.
G) radar can thus be calculated by the relationship of Doppler frequency and speed according to the index parameter calculated
The precision to test the speed.
The Chirp signals that the technical solution can emit the ADAS Automobile Millimeter Wave Radar transmitters of 24GHz and 77GHz
It is analyzed, it can by parameters such as chirp rate, the linearity, maximum frequency error, the average frequency errors of analysis Chirp signals
To understand radar transmitter transmission signal quality, and radar velocity measurement can be calculated by the relationship of Doppler frequency and speed
Precision understands the performance parameter of car radar this makes it possible to more detailed, and then can effectively improve the quality of car radar.
So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of measuring system of detection ADAS car radar rate accuracies, which is characterized in that it includes：
Front ends of millimeter waves module, the front ends of millimeter waves module are used to receive the millimeter-wave signal that ADAS car radars are sent out and carry out
Millimeter-wave signal is down-converted to intermediate frequency, and exports intermediate-freuqncy signal outward by down coversion；
Digital intermediate-frequency receiver, the digital intermediate-frequency receiver is for receiving the intermediate frequency that the front ends of millimeter waves module is sent out
Signal, and intermediate-freuqncy signal is improved；
Host is controlled, the control host is used to dispatching and controlling the front ends of millimeter waves module, digital intermediate-frequency receiver, and
It acquires the intermediate-freuqncy signal that digital intermediate-frequency receiver is sent and carries out analysis and obtain signal parameter.
2. the measuring system of detection ADAS car radar rate accuracies according to claim 1, which is characterized in that the control
Host processed includes：
Digital intermediate frequency signal acquisition processing module, the digital intermediate frequency signal acquisition processing module connect for acquiring digital intermediate frequency
The intermediate frequency I/Q signal of receipts machine transmission is simultaneously handled；
FM demodulation modules, the intermediate frequency I/Q signal that the FM demodulation modules are used to handle intermediate frequency digital signal acquisition process module into
Row demodulation；
Chirp Rate computing modules, the Chirp Rate computing modules are carried out for the signal after being demodulated according to FM
The calculating of Chirp Rate；
It is prior to extract user for being detached to multistage Chirp signals for Chirp extraction modules, the Chirp extraction modules
Some effective Chirp of definition, remove the unwanted data of user；
Data fitting module, the data fitting module are used to carry out data to the every section of Chirp original signal extracted quasi-
It closes, obtains ideal Chirp signals；
Index computing module, the index computing module be used for demodulated according to FM after Chirp signals and carry out data fitting after
Ideal Chirp signals calculate Automobile Millimeter Wave Radar transmitter transmitting Chirp signal index parameters.
3. the measuring system of detection ADAS car radar rate accuracies according to claim 1, which is characterized in that the control
Host processed uses NI LabVIEW pattern development platforms.
4. the measuring system of detection ADAS car radar rate accuracies according to claim 1, which is characterized in that described
ADAS car radars are the Automobile Millimeter Wave Radar of 24G or 77G.
5. a kind of measurement method of detection ADAS car radar rate accuracies, which is characterized in that it includes the following steps：
1）The millimeter-wave signal that sent out to ADAS car radars simultaneously carries out down coversion, and millimeter-wave signal is down-converted to intermediate frequency,
2）And intermediate-freuqncy signal is improved；
3）Intermediate-freuqncy signal after acquisition conditioning, and calculate analyzing and obtain signal parameter.
6. the measurement method of detection ADAS car radar rate accuracies according to claim 5, it is characterised in that：Step 3）
In mainly comprise the following specific steps that：
A) it carries out the acquisition of the intermediate frequency I/Q signal of ADAS car radars and is handled；
b）FM demodulation is carried out to the I/Q data in treated signal, obtains original modulated signal；
c）Signal after being demodulated according to FM carries out the calculating of Chirp Rate；
d）Multistage Chirp signals are detached, effective Chirp of user's predefined is extracted, it is unwanted to remove user
Data；
e）The every section of Chirp original signal extracted carries out data fitting, obtains ideal Chirp signals；
f）The ideal Chirp signals after Chirp signals and progress data fitting after being demodulated according to FM calculate relevant index
Parameter.
7. the measurement method of detection ADAS car radar rate accuracies according to claim 6, it is characterised in that：Step a)
Middle signal processing includes signal equalization, filtering, amplitude transformation.
8. the measurement method of detection ADAS car radar rate accuracies according to claim 6, it is characterised in that：Step e)
Middle data fitting mainly carries out data fitting using least square method to the every section of Chirp original signal extracted.
9. the measurement method of detection ADAS car radar rate accuracies according to claim 6, it is characterised in that：Step f）
In index of correlation parameter include the linearity, the precision of chirp rate, maximum frequency error, average frequency error, velocity test.
10. the measurement method of detection ADAS car radar rate accuracies according to claim 6, it is characterised in that：According to
Step f）The index parameter of calculating calculates the precision of radar velocity measurement by the relationship of Doppler frequency and speed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581311A (en) * | 2018-12-18 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | Radar function test macro and its test method |
| CN112834998A (en) * | 2021-02-08 | 2021-05-25 | 北京市计量检测科学研究院(北京市能源计量监测中心) | 77G millimeter wave radar test system |
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| US20090309783A1 (en) * | 2008-06-13 | 2009-12-17 | Honeywell International Inc. | Millimeter wave radar target simulation systems and methods |
| CN107831479A (en) * | 2017-12-01 | 2018-03-23 | 北京润科通用技术有限公司 | A kind of analogue echoes method and system |
| CN208314184U (en) * | 2018-03-29 | 2019-01-01 | 苏州凌创瑞地测控技术有限公司 | Detect the measuring system of ADAS car radar rate accuracy |
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2018
- 2018-03-29 CN CN201810270783.3A patent/CN108445460A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090309783A1 (en) * | 2008-06-13 | 2009-12-17 | Honeywell International Inc. | Millimeter wave radar target simulation systems and methods |
| CN107831479A (en) * | 2017-12-01 | 2018-03-23 | 北京润科通用技术有限公司 | A kind of analogue echoes method and system |
| CN208314184U (en) * | 2018-03-29 | 2019-01-01 | 苏州凌创瑞地测控技术有限公司 | Detect the measuring system of ADAS car radar rate accuracy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581311A (en) * | 2018-12-18 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | Radar function test macro and its test method |
| CN112834998A (en) * | 2021-02-08 | 2021-05-25 | 北京市计量检测科学研究院(北京市能源计量监测中心) | 77G millimeter wave radar test system |
| CN112834998B (en) * | 2021-02-08 | 2023-04-18 | 北京市计量检测科学研究院(北京市能源计量监测中心) | 77G millimeter wave radar test system |
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Address after: 215000 Jiangsu city of Suzhou Province Economic and Technological Development Zone of Wujiang Yang Road South, Longqiao Road West Applicant after: Suzhou Ruidi measurement and Control Technology Co., Ltd Address before: 215000 Jiangsu city of Suzhou Province Economic and Technological Development Zone of Wujiang Yang Road South, Longqiao Road West Applicant before: SUZHOU LINKTRON RADSYS Co.,Ltd. |