CN101995530A - Closed-loop adaptive ranging working method - Google Patents
Closed-loop adaptive ranging working method Download PDFInfo
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- CN101995530A CN101995530A CN 201010548684 CN201010548684A CN101995530A CN 101995530 A CN101995530 A CN 101995530A CN 201010548684 CN201010548684 CN 201010548684 CN 201010548684 A CN201010548684 A CN 201010548684A CN 101995530 A CN101995530 A CN 101995530A
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Abstract
The invention discloses a closed-loop adaptive ranging working method. A signal processing module simulates the closed-loop transceiving process to form a closed-loop test. During startup each time, the delay of test signals is automatically measured dynamically and corrected, so that a corrected value is more accurate, and the ranging accuracy is improved. In the design, a transmitting end and a receiving end simulate the closed-loop transceiving process, the test signals are transmitted to an antenna port through a transmission channel, and control signals are fed back to a receiving channel to form the closed-loop test. The algorithm is solidified in the signal processing module and is completely carried out automatically, so the test time is saved, the test method is simplified, and the efficiency and system reliability are greatly improved.
Description
Technical field
The present invention relates to a kind of closed-loop adaptation range finding method of work.
Background technology
Conventional test methodologies is to adopt special test equipment that each module (containing signal processing module, frequently comprehensive module, transceiver module, stube cable etc.) of device interior is measured respectively, and adding up then obtains internal delay time, and revises.
This method test is loaded down with trivial details, and can only when adopting module to exchange, then need to remeasure at individual bulk measurement, and testing efficiency is extremely low, and is subjected to external environment condition (as temperature, weather) influence bigger, and distance accuracy is difficult to satisfy index request.
Summary of the invention
And the design's algorithm is when each start, equipment can send automatically that data are repeatedly tested and configuration modifications value automatically, by signal processing module analog closed-loop emission receiving course, test signal is sent to antenna port by transmission channel, control signal feeds back to receiving cable, forms closed loop test.
Design concept:
Time delay comprises following content:
A) time delay of transmitting terminal:
1) time delay of baseband modulation signal processing;
2) the intermediate frequency process module is finished frequency-conversion processing, the time delay that the multi-channel rf signal is synthetic;
3) length of connection cable is to the influence of time delay.
B) time delay of receiving end:
1) the synthetic time delay of multi-channel rf signal, the intermediate frequency process module is finished frequency-conversion processing;
2) the AD sample circuit, separate and be in harmonious proportion the time delay of synchronizing circuit signal Processing;
3) length of connection cable is to the influence of time delay.
Signal processing module carries out kinetic measurement to the delay of test signal, above-mentioned each contingent time delay summation meter is calculated, i.e. T (time delay).When formal range finding, total with T.T. T() deduct T time delay (time delay) that measures, multiply by light velocity C again is exactly distance accuracy L, and formula is as follows:
L=(T(is total)-T (time delay)) * C.
The whole delay T (time delay) that is wherein measured equals (int-transmitting terminal, transp-receiving end):
T (time delay)=(TX processing delay) int+ (range delay) int-〉transp+ (radio frequency/intermediate frequency delay) transp+(synchronous processing delay) transp+(processing and stabilization time) the transp+(deterministic delays) the transp+(random delay) the transp+(TX processing delay) the transp+(range delay) transp-〉delay of int+(radio frequency/intermediate frequency) the int+(synchronous processing delay) int ﹔
During test,, all can adopt this algorithm if system need change module or carry out module with other producers and exchange.
Closed loop test circuit theory block diagram 1 is as follows:
Baseband signal processing module is handled through FPGA and is obtained the mistiming, again by poor (T(the is total)-T of DSP time for reading from FPGA (time delay)) get final product.
The design's advantage:
Compare with conventional test methodologies, this test of heuristics efficient is high, and is not subjected to external environment condition (as temperature, weather) influence, and range finding is smart high.And this algorithm is curable in signal processing module, and full automation carries out, and has not only saved the test duration but also simplified method of testing, but also has reduced testing cost, has greatly improved overall system efficiency and reliability.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a closed loop test circuit theory block diagram.
Embodiment
Disclosed all features in this instructions, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The design can be applied to that time precision is had strict restriction and the equipment that requires and the equipment of system modular.Signal processing module carries out kinetic measurement to the delay of test signal, above-mentioned each contingent time delay summation meter is calculated, i.e. T (time delay).When formal range finding, total with T.T. T() deduct T time delay (time delay) that measures, multiply by light velocity C again is exactly distance accuracy L, and formula is as follows:
L=(T(is total)-T (time delay)) * C.
The whole delay T (time delay) that is wherein measured equals (int-transmitting terminal, transp-receiving end):
T (time delay)=(TX processing delay) int+ (range delay) int-〉transp+ (radio frequency/intermediate frequency delay) transp+(synchronous processing delay) transp+(processing and stabilization time) the transp+(deterministic delays) the transp+(random delay) the transp+(TX processing delay) the transp+(range delay) transp-〉delay of int+(radio frequency/intermediate frequency) the int+(synchronous processing delay) int.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (3)
1. closed-loop adaptation range finding method of work, it is characterized in that: when each start, equipment can send automatically that data are repeatedly tested and configuration modifications value automatically, by signal processing module analog closed-loop emission receiving course, test signal is sent to antenna port by transmission channel, control signal feeds back to receiving cable, forms closed loop test; Signal processing module carries out kinetic measurement to the delay of test signal, above-mentioned each contingent time delay summation meter is calculated, i.e. T.
2. closed-loop adaptation range finding method of work according to claim 1 is characterized in that: when formal range finding, total with T.T. T() deduct T time delay (time delay) that measures, multiply by light velocity C again is exactly distance accuracy L, and formula is as follows:
L=(T(is total)-T (time delay)) * C;
The whole delay T (time delay) that is wherein measured equals (int-transmitting terminal, transp-receiving end):
T (time delay)=(TX processing delay) int+ (range delay) int-〉transp+ (radio frequency/intermediate frequency delay) transp+(synchronous processing delay) transp+(processing and stabilization time) the transp+(deterministic delays) the transp+(random delay) the transp+(TX processing delay) the transp+(range delay) transp-〉delay of int+(radio frequency/intermediate frequency) the int+(synchronous processing delay) int.
3. closed-loop adaptation range finding method of work according to claim 1, it is characterized in that: baseband signal processing module is handled through FPGA and is obtained the mistiming, again by poor (T(the is total)-T of DSP time for reading from FPGA (time delay)) get final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010548684 CN101995530B (en) | 2010-11-18 | 2010-11-18 | Closed-loop adaptive ranging working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010548684 CN101995530B (en) | 2010-11-18 | 2010-11-18 | Closed-loop adaptive ranging working method |
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| CN101995530A true CN101995530A (en) | 2011-03-30 |
| CN101995530B CN101995530B (en) | 2013-01-23 |
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| CN 201010548684 Expired - Fee Related CN101995530B (en) | 2010-11-18 | 2010-11-18 | Closed-loop adaptive ranging working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120964A (en) * | 2017-11-22 | 2018-06-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method that dynamic test secondary radar the machine delay data improves range accuracy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159586A (en) * | 1995-12-21 | 1997-09-17 | 株式会社艾德温特斯特 | Method of measuring delay time and random pulse train generating circuit used in such method |
| CN1178009A (en) * | 1996-01-25 | 1998-04-01 | 株式会社爱德万测试 | Delay time measuring method and pulse generator for measuring delay time for use in said measuring method |
| JPH11148956A (en) * | 1997-11-14 | 1999-06-02 | Ntt Mobil Commun Network Inc | Arrival angle delay time measuring device |
| CN1599291A (en) * | 2003-09-15 | 2005-03-23 | 华东电网有限公司 | Method for measuring transmission time-delay of telemechanical system by GPS |
| CN1866801A (en) * | 2006-03-29 | 2006-11-22 | 华为技术有限公司 | Apparatus and method for measuring wireless base station channel delay |
-
2010
- 2010-11-18 CN CN 201010548684 patent/CN101995530B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159586A (en) * | 1995-12-21 | 1997-09-17 | 株式会社艾德温特斯特 | Method of measuring delay time and random pulse train generating circuit used in such method |
| CN1178009A (en) * | 1996-01-25 | 1998-04-01 | 株式会社爱德万测试 | Delay time measuring method and pulse generator for measuring delay time for use in said measuring method |
| JPH11148956A (en) * | 1997-11-14 | 1999-06-02 | Ntt Mobil Commun Network Inc | Arrival angle delay time measuring device |
| CN1599291A (en) * | 2003-09-15 | 2005-03-23 | 华东电网有限公司 | Method for measuring transmission time-delay of telemechanical system by GPS |
| CN1866801A (en) * | 2006-03-29 | 2006-11-22 | 华为技术有限公司 | Apparatus and method for measuring wireless base station channel delay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120964A (en) * | 2017-11-22 | 2018-06-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method that dynamic test secondary radar the machine delay data improves range accuracy |
| CN108120964B (en) * | 2017-11-22 | 2021-12-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Method for dynamically testing time delay data of secondary radar local machine to improve ranging precision |
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| CN101995530B (en) | 2013-01-23 |
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