CN113433511A - Method and device applied to time difference direction-finding channel precision measurement - Google Patents
Method and device applied to time difference direction-finding channel precision measurement Download PDFInfo
- Publication number
- CN113433511A CN113433511A CN202110710293.2A CN202110710293A CN113433511A CN 113433511 A CN113433511 A CN 113433511A CN 202110710293 A CN202110710293 A CN 202110710293A CN 113433511 A CN113433511 A CN 113433511A
- Authority
- CN
- China
- Prior art keywords
- radiation source
- time difference
- signal
- power divider
- source target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/023—Monitoring or calibrating
-
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/023—Monitoring or calibrating
- G01S3/026—Simulating means therefor
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a method and a device applied to the precision measurement of a time difference direction-finding channel, comprising the following steps: s1, a signal direction simulation unit is arranged, and a radiation source target signal delay device, a power divider and the like are arranged on the signal direction simulation unit; s2, a signal direction simulation unit is powered on, delay lines with different lengths are selected by controlling a radiation source target signal delay device on the signal direction simulation unit, so that different electric signal arrival times are formed, and the electric signal arrival time difference among different receiving channels is obtained through measurement, so that different delay values are formed for transmission signals; and S3, calculating different test orientations of the simulated radiation source according to the different delay values formed in the step S2. The invention saves resources, is easy for quality control, and improves the debugging efficiency, etc.
Description
Technical Field
The invention relates to the field of time difference direction-finding systems, in particular to a method and a device applied to time difference direction-finding channel precision measurement.
Background
The time-difference direction finding is a direction finding technique in which a given modulated signal is measured for time by using two or more antennas at different positions, and the arrival direction of a radio wave is determined by using the time difference between the arrival of the signal at each antenna.
In order to ensure that the product quality meets the technical index requirement with the short base line time difference, the direction-finding precision index needs to be tested in a microwave darkroom provided with a professional calibration control system. Currently, radiation method is generally selected for direct irradiation in engineering, that is, a radiation source is used to irradiate a detected system, and the physical space orientation of the detected system relative to a detection system is a true target orientation, and a schematic diagram is shown in fig. 1.
The prior art has certain application defects: the radiation method requires a special darkroom which is matched with a receiving antenna array, a transmitting antenna and a calibration control system.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the method and the device applied to the precision measurement of the time difference direction-finding channel, saves resources, is easy to control quality, improves the debugging efficiency and the like.
The purpose of the invention is realized by the following scheme:
a method applied to the accuracy measurement of a time difference direction-finding channel comprises the following steps:
s1, a signal direction simulation unit is arranged, and a radiation source target signal delay device and a power divider are arranged on the signal direction simulation unit; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with a radiation source target signal delay device, the third end of the power divider is connected with a front-end receiver, the front-end receiver is connected with a time difference direction-finding system, and the time difference direction-finding system is connected with a direct-current power supply;
s2, a signal direction simulation unit is powered on, delay lines with different lengths are selected by controlling a radiation source target signal delay device on the signal direction simulation unit, so that different electric signal arrival times are formed, and the electric signal arrival time difference among different receiving channels is obtained through measurement, so that different delay values are formed for transmission signals;
and S3, calculating different test orientations of the simulated radiation source according to the different delay values formed in the step S2.
Further, the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
Further, comprising the steps of: the delay value of the signal obtained in step S2 is calibrated.
Furthermore, in the calibration step, a detector and a digital oscilloscope are arranged, a first input end of the detector is connected with an output end of the radiation source target signal delay device, a second input end of the detector is connected with an output end of the power divider, and an output end of the detector is connected with an input end of the digital oscilloscope.
An apparatus applied to the accuracy measurement of a time difference direction-finding channel comprises:
the device comprises a signal direction simulation unit, a radiation source target signal delay device and a power divider, wherein the signal direction simulation unit is provided with the radiation source target signal delay device and the power divider; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with the radiation source target signal delay device, the third end of the power divider is connected with the front end receiver, the front end receiver is connected with the time difference direction-finding system, and the time difference direction-finding system is connected with the direct-current power supply.
Further, the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
The calibration unit comprises a detector and a digital oscilloscope, a first input end of the detector is connected with an output end of the radiation source target signal delay device, a second input end of the detector is connected with an output end of the power divider, and an output end of the detector is connected with an input end of the digital oscilloscope.
Further, a display is included and is connected with the time difference direction-finding system.
The beneficial effects of the invention include:
(1) in the embodiment of the invention, the signal direction simulation unit generates the signal time delay value, the switch conduction ends are interconnected when the time difference lateral system carries out direction measurement, and the signal time delay value is simulated to realize the measurement of the direction measurement precision of the time difference branch. The signal direction simulation unit simulates to generate a signal time delay value according to the transmission characteristics of the electric signals, and the precision measurement is carried out by adopting an injection method through the interconnection of switch conducting ends during direction measurement, the test effect and the effect are equivalent to those of a radiation method, but a receiving antenna array, a transmitting antenna and a special microwave darkroom are not required to be matched, and for batch production, the requirement of product quality consistency inspection is met, the resources are saved, and the debugging efficiency is improved.
(2) According to the embodiment of the invention, the scheme of measuring the direction-finding precision of the time difference branch is realized by simulating the signal delay value through the signal direction simulation unit, the equipment composition and the running state related to the direction-finding precision index of the difference branch in the product to be tested are completely the same through verifying the internal field actual measurement result, no matter a radiation method or an injection method is adopted, the test result meets the technical requirements of the product, but the injection method does not need a professional darkroom provided with a calibration control system any more, so that the resources are saved, the quality control is easy, and the adjusting and measuring efficiency is improved for the short-baseline time difference series products.
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 a conventional time difference direction-finding accuracy test;
FIG. 2 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a delay calibration test of a signal orientation simulator of an apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a time difference direction-finding accuracy test according to an embodiment of the present invention.
Detailed Description
All features disclosed in all embodiments in this specification, or all methods or process steps implicitly disclosed, may be combined and/or expanded, or substituted, in any way, except for mutually exclusive features and/or steps.
As shown in fig. 1 to 4, a method applied to precision measurement of a time difference direction-finding channel includes the steps of:
s1, a signal direction simulation unit is arranged, and a radiation source target signal delay device and a power divider are arranged on the signal direction simulation unit; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with a radiation source target signal delay device, the third end of the power divider is connected with a front-end receiver, the front-end receiver is connected with a time difference direction-finding system, and the time difference direction-finding system is connected with a direct-current power supply;
s2, a signal direction simulation unit is powered on, delay lines with different lengths are selected by controlling a radiation source target signal delay device on the signal direction simulation unit, so that different electric signal arrival times are formed, and the electric signal arrival time difference among different receiving channels is obtained through measurement, so that different delay values are formed for transmission signals;
and S3, calculating different test orientations of the simulated radiation source according to the different delay values formed in the step S2.
In an alternative embodiment, the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
An alternative embodiment, comprises the steps of: the delay value of the signal obtained in step S2 is calibrated.
In an optional implementation manner, in the calibration step, a detector and a digital oscilloscope are provided, a first input end of the detector is connected to an output end of the radiation source target signal delay device, a second input end of the detector is connected to an output end of the power divider, and an output end of the detector is connected to an input end of the digital oscilloscope.
An apparatus applied to the accuracy measurement of a time difference direction-finding channel comprises:
the device comprises a signal direction simulation unit, a radiation source target signal delay device and a power divider, wherein the signal direction simulation unit is provided with the radiation source target signal delay device and the power divider; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with the radiation source target signal delay device, the third end of the power divider is connected with the front end receiver, the front end receiver is connected with the time difference direction-finding system, and the time difference direction-finding system is connected with the direct-current power supply.
In an alternative embodiment, the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
The optional implementation mode comprises a calibration unit, wherein the calibration unit comprises a detector and a digital oscilloscope, a first input end of the detector is connected with an output end of the radiation source target signal delay device, a second input end of the detector is connected with an output end of the power divider, and an output end of the detector is connected with an input end of the digital oscilloscope.
An alternative embodiment includes a display coupled to the jet lag system.
In the time difference direction-finding system, the incident direction of a radiation source target signal and the signal delay time between the radiation source target signal and two signal receiving channels forming a direction-finding baseline are in one-to-one correspondence, namely when signals are injected into the two signal receiving channels forming the direction-finding baseline, the delay value between the signals and the direction information carried by the injected signals are also in one-to-one correspondence, and accordingly the circuit structure of the signal direction simulation unit based on the principle shown in fig. 2 is designed.
The signal time delay value simulated by the signal orientation simulation unit is measured through the transmission characteristic of an electric signal, and the true orientation of the orientation test point is obtained by converting the time delay measurement value according to the length theory of a configured base line in system software.
After the equipment is powered on, delay lines with different lengths are selected by controlling a path selection switch on a signal direction simulation unit to form different electric signal arrival times, and the electric signal arrival time difference between different receiving channels is obtained by measuring different path difference detection and reception systems, so that different delays are formed for transmission signals, and different test directions of a simulated radiation source are calculated by different delay values. In addition, the signal time delay value can be calibrated according to the requirement, as shown in fig. 3.
The signal azimuth simulation unit can provide 5 azimuth test points in a 0-45-degree direction-finding range, so that 40 azimuth test points can be provided in a 0-360-degree direction-finding range, and the technical requirements of products are met.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Other embodiments than the above examples may be devised by those skilled in the art based on the foregoing disclosure, or by adapting and using knowledge or techniques of the relevant art, and features of various embodiments may be interchanged or substituted and such modifications and variations that may be made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the following claims.
The functionality of the present invention, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium, and all or part of the steps of the method according to the embodiments of the present invention are executed in a computer device (which may be a personal computer, a server, or a network device) and corresponding software. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, or an optical disk, exist in a read-only Memory (RAM), a Random Access Memory (RAM), and the like, for performing a test or actual data in a program implementation.
Claims (8)
1. A method applied to the precision measurement of a time difference direction-finding channel is characterized by comprising the following steps:
s1, a signal direction simulation unit is arranged, and a radiation source target signal delay device and a power divider are arranged on the signal direction simulation unit; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with a radiation source target signal delay device, the third end of the power divider is connected with a front-end receiver, the front-end receiver is connected with a time difference direction-finding system, and the time difference direction-finding system is connected with a direct-current power supply;
s2, a signal direction simulation unit is powered on, delay lines with different lengths are selected by controlling a radiation source target signal delay device on the signal direction simulation unit, so that different electric signal arrival times are formed, and the electric signal arrival time difference among different receiving channels is obtained through measurement, so that different delay values are formed for transmission signals;
and S3, calculating different test orientations of the simulated radiation source according to the different delay values formed in the step S2.
2. The method as claimed in claim 1, wherein the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
3. The method for measuring the accuracy of the moveout direction-finding channel according to any one of claims 1 or 2, comprising the steps of: the delay value of the signal obtained in step S2 is calibrated.
4. The method as claimed in claim 3, wherein in the calibration step, a detector and a digital oscilloscope are provided, a first input end of the detector is connected with an output end of the radiation source target signal delay device, a second input end of the detector is connected with an output end of the power divider, and an output end of the detector is connected with an input end of the digital oscilloscope.
5. The utility model provides a be applied to time difference direction finding passageway precision measurement's device which characterized in that includes:
the device comprises a signal direction simulation unit, a radiation source target signal delay device and a power divider, wherein the signal direction simulation unit is provided with the radiation source target signal delay device and the power divider; the first end of the power divider is connected with a signal source, the second end of the power divider is connected with the radiation source target signal delay device, the third end of the power divider is connected with the front end receiver, the front end receiver is connected with the time difference direction-finding system, and the time difference direction-finding system is connected with the direct-current power supply.
6. The method as claimed in claim 5, wherein the radiation source target signal delay device comprises two path selection switches, and the first path selection switch is connected with the second path selection switch.
7. The method for the accuracy measurement of the time difference direction-finding channel according to any one of claims 5 or 6, comprising a calibration unit, wherein the calibration unit comprises a detector and a digital oscilloscope, a first input end of the detector is connected with an output end of the radiation source target signal delay device, a second input end of the detector is connected with an output end of the power divider, and an output end of the detector is connected with an input end of the digital oscilloscope.
8. The method applied to the accuracy measurement of the moveout direction-finding channel is characterized by comprising a display, wherein the display is connected with the moveout direction-finding system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710293.2A CN113433511A (en) | 2021-06-25 | 2021-06-25 | Method and device applied to time difference direction-finding channel precision measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710293.2A CN113433511A (en) | 2021-06-25 | 2021-06-25 | Method and device applied to time difference direction-finding channel precision measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113433511A true CN113433511A (en) | 2021-09-24 |
Family
ID=77754454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110710293.2A Pending CN113433511A (en) | 2021-06-25 | 2021-06-25 | Method and device applied to time difference direction-finding channel precision measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113433511A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281246A (en) * | 2008-06-03 | 2008-10-08 | 中国电子科技集团公司第四十一研究所 | Modularization phase coherent multichannel signal generating device based on PXI bus |
| CN102540142A (en) * | 2011-03-29 | 2012-07-04 | 中国人民解放军空军工程大学 | Close-range and small-site time difference location method and device |
| CN104698542A (en) * | 2014-12-16 | 2015-06-10 | 中国科学院上海光学精密机械研究所 | Microwave optical fiber delay line |
| CN104820215A (en) * | 2015-05-25 | 2015-08-05 | 扬州宇安电子科技有限公司 | High-precision radar target simulator based on fiber delay line |
| CN108802668A (en) * | 2018-05-02 | 2018-11-13 | 桂林长海发展有限责任公司 | A kind of multifunctional radiation source angle of arrival simulator and method |
| CN109412706A (en) * | 2018-11-09 | 2019-03-01 | 成都九华圆通科技发展有限公司 | A kind of direction-finder antenna simulation method and system |
-
2021
- 2021-06-25 CN CN202110710293.2A patent/CN113433511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281246A (en) * | 2008-06-03 | 2008-10-08 | 中国电子科技集团公司第四十一研究所 | Modularization phase coherent multichannel signal generating device based on PXI bus |
| CN102540142A (en) * | 2011-03-29 | 2012-07-04 | 中国人民解放军空军工程大学 | Close-range and small-site time difference location method and device |
| CN104698542A (en) * | 2014-12-16 | 2015-06-10 | 中国科学院上海光学精密机械研究所 | Microwave optical fiber delay line |
| CN104820215A (en) * | 2015-05-25 | 2015-08-05 | 扬州宇安电子科技有限公司 | High-precision radar target simulator based on fiber delay line |
| CN108802668A (en) * | 2018-05-02 | 2018-11-13 | 桂林长海发展有限责任公司 | A kind of multifunctional radiation source angle of arrival simulator and method |
| CN109412706A (en) * | 2018-11-09 | 2019-03-01 | 成都九华圆通科技发展有限公司 | A kind of direction-finder antenna simulation method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102111874B1 (en) | Method for testing wireless performance of MIMO wireless terminals | |
| CN110031811B (en) | Multichannel broadband signal coherent characteristic rapid calibration system | |
| CN110031809B (en) | Radar multi-receiving-channel amplitude-phase consistency calibration method and readable storage medium | |
| CN104931906B (en) | The transmission delay calibration method and system of the digital channel of integrated circuit test system | |
| CN108107413A (en) | A kind of radar simulator calibration system | |
| CN104820215A (en) | High-precision radar target simulator based on fiber delay line | |
| CN106679694B (en) | The air-air response Time delay measurement Precision calibration device and method of tacan beacon simulator | |
| US6710737B1 (en) | Calibrator for radar target simulator | |
| CN111385036B (en) | Radio frequency performance test method and device of wireless equipment and tester | |
| CN113433511A (en) | Method and device applied to time difference direction-finding channel precision measurement | |
| CN103308928A (en) | Pseudo-range precision measurement system of satellite navigation signal simulator | |
| CN107807351B (en) | Takang test and monitoring device | |
| CN111064533B (en) | Time delay measurement system, time delay measurement method, electronic device, and storage medium | |
| CN111191409B (en) | Method and device for simulating chip internal silicon chip pin signals | |
| CN103308930A (en) | Pseudo-range precision measurement method of satellite navigation signal simulator | |
| Sheret et al. | Phase stable multi-channel antenna measurements on a moving positioner | |
| RU2318189C1 (en) | Method for determining inaccuracy of navigational equipment | |
| Eschlwech et al. | Target simulation for UHF RFID DoA estimation systems | |
| Jargon et al. | Verifying the performance of a correlation-based channel sounder in the 3.5 GHz band with a calibrated vector network analyzer | |
| CN211856871U (en) | Traveling wave ranging calibration device | |
| CN219225073U (en) | Accuracy verification system of target RCS | |
| US9581675B2 (en) | Virtual model adapter removal and substitution technique for cascaded networks | |
| CN108490405B (en) | Calibration method for simulation height in target simulator | |
| CN117194854B (en) | Three-dimensional positioning method and device based on improved Chan algorithm | |
| US11137501B2 (en) | System for measuring inter channel latencies and method of measuring inter channel latencies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210924 |