CN110579745A - Method for improving millimeter wave radar production line testing efficiency - Google Patents
Method for improving millimeter wave radar production line testing efficiency Download PDFInfo
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- CN110579745A CN110579745A CN201910844165.XA CN201910844165A CN110579745A CN 110579745 A CN110579745 A CN 110579745A CN 201910844165 A CN201910844165 A CN 201910844165A CN 110579745 A CN110579745 A CN 110579745A
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- radar
- target simulator
- radio frequency
- frequency front
- radar target
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000003111 delayed effect Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 2
- 238000013522 software testing Methods 0.000 description 1
Classifications
-
- 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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
-
- 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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
- G01S7/4065—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder involving a delay line
Abstract
The invention discloses a method for improving millimeter wave radar production line testing efficiency, which comprises a radar target simulator host, wherein the radar target simulator host is provided with N independent radio frequency front ends, a selector switch for signal switching between the radar target simulator host and the N independent radio frequency front ends is arranged between the radar target simulator host and the N radio frequency front ends, each radio frequency front end is connected with a horn antenna, and the radar target simulator host, the selector switch and a radar to be tested are controlled by a control computer, and the method comprises the following steps: the method comprises the following steps: setting parameters of a host of a radar target simulator; step two: a first radar trigger signal under test; step three: a second detected radar trigger signal; step four: triggering a signal by the Nth radar to be tested and carrying out a cycle test; the beneficial effects are that: the radio frequency front end is switched in the idle time of the effective emission signal of the radar to be detected, so that the idle time of the radar target simulator host is reduced, and the utilization rate of the radar target simulator host is improved.
Description
Technical Field
The invention relates to the technical field of radars, in particular to a method for improving the test efficiency of a millimeter wave radar production line.
Background
The millimeter wave is electromagnetic wave with the wavelength of 1-10mm, the wavelength is short, the frequency band is wide, narrow wave beams are easy to realize, the radar resolution is high, and the interference is not easy to occur; the millimeter wave radar is a high-precision sensor for measuring the relative distance, the relative speed, the azimuth angle and the pitch angle of a measured object. The existing millimeter wave radar production line test scheme using the radar target simulator host machine is that one radar target simulator host machine corresponds to one test line, and the price of the radar target simulator host machine is higher and generally accounts for 70% of the purchase cost of the whole test system. The radar target simulator generally comprises a radar target simulator host and an independent radio frequency front end, as shown in fig. 3, a radar trigger signal is returned to the radio frequency front end again for sending to a tested radar again and starting to process the signal after time delay and Doppler frequency offset of the radar target simulator host by Td time, the radar target simulator host is in idle time before the next radar trigger signal, and the process from the completion of echo signal transmission to the completion of idle time of the radar target simulator host accounts for about 80% of the test time T of each radar, so that the utilization rate is low due to one radar target simulator host corresponding to one test, particularly a product requiring longer test time, and the test cost is greatly increased.
Disclosure of Invention
the present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
The utility model provides a method for improving millimeter wave radar production line efficiency of software testing, including radar target simulator host computer, radar target simulator host computer has N independent radio frequency front end, be provided with the selector switch that is used for the signal switching between radar target simulator host computer and the N independent radio frequency front end between radar target simulator host computer and N radio frequency front end, every radio frequency front end all is connected with horn antenna, radar target simulator host computer, selector switch and measured radar are controlled by the control computer, wherein, the value of N is decided by the effective signal transmission time duty cycle of measured radar, the method includes following step:
The method comprises the following steps: controlling a computer to set echo signal parameters of a radar target simulator host machine, and ensuring that N detected radars correspond to N radio frequency front ends one by one;
Step two: the control computer controls the selector switch to connect the radar target simulator host to the first radio frequency front end, meanwhile, the control computer triggers the first radar to be tested to transmit signals, the signals are transmitted to the radar target simulator host through the first radio frequency front end, the signals are transmitted back to the first radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset and are transmitted to the first radar to be tested again, and the first radar to be tested starts to process the signals after receiving echo signals;
Step three: when the first radar to be tested finishes receiving the echo signal, the control computer controls the selection switch to connect the radar target simulator host to the second radio frequency front end, meanwhile, the control computer triggers the second radar to be tested to transmit the signal, the signal is transmitted to the radar target simulator host through the second radio frequency front end, the signal is transmitted back to the second radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset to be transmitted to the second radar to be tested again, and the second radar to be tested starts signal processing after finishing receiving the echo signal;
step four: and step three is repeated continuously, when the control computer controls the selection switch to connect the radar target simulator host to the Nth radio frequency front end and trigger the Nth radar to transmit signals, the signals are transmitted to the radar target simulator host through the Nth radio frequency front end, the signals are transmitted back to the Nth radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset and are sent back to the Nth radar to be tested again, the Nth radar to be tested receives echo signals and processes the signals, and at the moment, the control computer controls the selection switch to switch the radar target simulator host to the first radio frequency front end again to perform the cycle test of the repeated steps two to four.
preferably, the N radars under test are placed in N shielded dark boxes, respectively, for providing a clean electromagnetic environment for testing.
Preferably, the echo signal of the radar target simulator comprises the relative distance, relative velocity and scattering cross section of the simulated signal.
Preferably, the control computer controls the radar target simulator, the selection switch and the radar to be detected through the control line, and the radar to be detected can be triggered externally.
Preferably, the radar target simulator host and the selection switch, and the selection switch and the radio frequency front end are connected through signal lines.
preferably, the signal transmitted by the radar to be detected is transmitted to the radio frequency front end through the radiation field of the horn antenna.
Compared with the prior art, the invention has the beneficial effects that: the radio frequency front ends are connected with the radar target simulator host by controlling the selector switch, and the radio frequency front ends are switched in the idle time of the effective emission signal of the radar to be tested, so that the radar target simulator host is connected with the next radio frequency front end for continuous cycle test, the idle time of the radar target simulator host is reduced, and the utilization rate of the radar target simulator host is improved; the computer is controlled to synchronously control the radar target simulator, the selector switch and the tested radar, so that the testing time is effectively shortened, and the testing efficiency is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a working principle diagram of the present invention.
Fig. 3 is a schematic diagram of the operation of the prior art.
In the figure: 1. radar target simulator host computer, 2, radio frequency front end, 21, first radio frequency front end, 22, second radio frequency front end, 23, nth radio frequency front end, 3, selector, 4, horn antenna, 5, surveyed radar, 51, first surveyed radar, 52, second surveyed radar, 53, nth surveyed radar, 6, control computer, 7, shielding camera bellows, 8, control line, 9, signal line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the present invention, a method for improving millimeter wave radar production line test efficiency includes a radar target simulator host 1, where the radar target simulator host 1 has N independent radio frequency front ends 2, a selector switch 3 for switching signals between the radar target simulator host 1 and the N independent radio frequency front ends 2 is disposed between the radar target simulator host 1 and the N radio frequency front ends 2, each radio frequency front end 2 is connected to a horn antenna 4, the radar target simulator host 1, the selector switch 3, and a radar to be tested 5 are controlled by a control computer 6, where a value of N is determined by a duty ratio of a time when the radar to be tested 5 effectively transmits a signal, and the method includes the following steps:
The method comprises the following steps: the control computer 6 sets echo signal parameters of the radar target simulator host 1, and ensures that the N tested radars 5 correspond to the N radio frequency front ends 2 one by one;
Step two: the control computer 6 controls the selector switch 3 to connect the radar target simulator host 1 to the first radio frequency front end 21, meanwhile, the control computer 1 triggers the first tested radar 51 to transmit signals, the signals are transmitted to the radar target simulator host 1 through the first radio frequency front end 21, the signals are transmitted back to the first radio frequency front end 21 again after being delayed and subjected to Doppler frequency offset by the radar target simulator host 1 and are transmitted back to the first tested radar 21 again, and the first tested radar 21 starts to process the signals after receiving echo signals;
step three: when the first detected radar 21 finishes receiving the echo signal, the control computer 6 controls the selector switch 3 to connect the radar target simulator host 1 to the second radio frequency front end 22, meanwhile, the control computer 6 triggers the second detected radar 52 to transmit the signal, the signal is transmitted to the radar target simulator host 1 through the second radio frequency front end 22, the signal is transmitted back to the second radio frequency front end 22 again after being delayed by the radar target simulator host 1 and subjected to Doppler frequency offset to be retransmitted to the second detected radar 52, and the second detected radar starts to perform signal processing after finishing receiving the echo signal;
step four: and step three is repeated continuously, when the control computer 6 controls the selector switch 3 to connect the radar target simulator host 1 to the Nth radio frequency front end 23 and trigger the Nth tested radar 53 to transmit signals, the signals are transmitted to the radar target simulator host 1 through the Nth radio frequency front end 23, after the signals are delayed and Doppler frequency offset by the radar target simulator host 1, the signals are transmitted back again to the Nth radio frequency front end to be sent back to the Nth tested radar 53, the Nth tested radar 53 receives echo signals and processes the signals, at the moment, the control computer 6 controls the selector switch 3 to switch the radar target simulator host 1 to the first radio frequency front end 21 again to perform the cycle test of the repeated step two to the step four.
Preferably, the N radars under test 5 are placed in N shielded dark boxes 7, respectively, for providing a clean electromagnetic environment for the test.
Preferably, the echo signal of the radar target simulator host 1 includes the relative distance, the relative velocity, and the scattering cross section of the analog signal.
Preferably, the control computer 6 controls the radar target simulator host 1, the selection switch 3 and the radar under test 5 through the control line 8, and the radar under test 5 can be triggered externally.
Preferably, the radar target simulator host 1 and the selection switch 3, and the selection switch 3 and the radio frequency front end 2 are connected through signal lines 9.
preferably, the signal emitted by the radar under test 5 is transferred to the radio frequency front end 2 through the radiation field of the horn antenna 4.
it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The method for improving the millimeter wave radar production line testing efficiency is characterized by comprising a radar target simulator host, wherein the radar target simulator host is provided with N independent radio frequency front ends, a selector switch used for signal switching between the radar target simulator host and the N independent radio frequency front ends is arranged between the radar target simulator host and the N radio frequency front ends, each radio frequency front end is connected with a horn antenna, and the radar target simulator host, the selector switch and a tested radar are controlled by a control computer, wherein the value of N is determined by the duty ratio of the effective signal sending time of the tested radar, and the method comprises the following steps:
The method comprises the following steps: controlling a computer to set echo signal parameters of a radar target simulator host machine, and ensuring that N detected radars correspond to N radio frequency front ends one by one;
step two: the control computer controls the selector switch to connect the radar target simulator host to the first radio frequency front end, meanwhile, the control computer triggers the first radar to be tested to transmit signals, the signals are transmitted to the radar target simulator host through the first radio frequency front end, the signals are transmitted back to the first radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset and are transmitted to the first radar to be tested again, and the first radar to be tested starts to process the signals after receiving echo signals;
Step three: when the first radar to be tested finishes receiving the echo signal, the control computer controls the selection switch to connect the radar target simulator host to the second radio frequency front end, meanwhile, the control computer triggers the second radar to be tested to transmit the signal, the signal is transmitted to the radar target simulator host through the second radio frequency front end, the signal is transmitted back to the second radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset to be transmitted to the second radar to be tested again, and the second radar to be tested starts signal processing after finishing receiving the echo signal;
Step four: and step three is repeated continuously, when the control computer controls the selection switch to connect the radar target simulator host to the Nth radio frequency front end and trigger the Nth radar to transmit signals, the signals are transmitted to the radar target simulator host through the Nth radio frequency front end, the signals are transmitted back to the Nth radio frequency front end again after being delayed by the radar target simulator host and subjected to Doppler frequency offset and are sent back to the Nth radar to be tested again, the Nth radar to be tested receives echo signals and processes the signals, and at the moment, the control computer controls the selection switch to switch the radar target simulator host to the first radio frequency front end again to perform the cycle test of the repeated steps two to four.
2. the method for improving the production line testing efficiency of the millimeter wave radar as claimed in claim 1, wherein the signal emitted by the radar to be tested is transmitted to the radio frequency front end through the radiation field of the horn antenna.
3. the method for improving millimeter wave radar production line testing efficiency according to claim 1, wherein the N radars and the N independent radio frequency front ends corresponding to the N radars are respectively placed in N shielding dark boxes for providing a clean electromagnetic environment for testing.
4. The method of claim 1, wherein the echo signal of the radar target simulator comprises a relative distance, a relative velocity and a scattering cross section of the simulation signal.
5. The method as claimed in claim 1, wherein the control computer controls the radar target simulator, the selection switch and the radar to be tested through the control wire, and the radar to be tested can be triggered externally.
6. the method for improving the millimeter wave radar production line testing efficiency as claimed in claim 1, wherein the radar target simulator host and the selection switch, and the selection switch and the radio frequency front end are connected through signal lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844165.XA CN110579745A (en) | 2019-09-06 | 2019-09-06 | Method for improving millimeter wave radar production line testing efficiency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910844165.XA CN110579745A (en) | 2019-09-06 | 2019-09-06 | Method for improving millimeter wave radar production line testing efficiency |
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| CN110579745A true CN110579745A (en) | 2019-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111679253A (en) * | 2020-04-30 | 2020-09-18 | 惠州市德赛西威汽车电子股份有限公司 | Millimeter wave radar test system and method thereof |
| CN112068091A (en) * | 2020-07-20 | 2020-12-11 | 杭州永谐科技有限公司 | Method for performing radar target mode by using signal source |
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| CN112068091A (en) * | 2020-07-20 | 2020-12-11 | 杭州永谐科技有限公司 | Method for performing radar target mode by using signal source |
| CN112068091B (en) * | 2020-07-20 | 2023-07-14 | 杭州永谐科技有限公司 | Method for carrying out radar target mode by utilizing signal source |
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