CN101995530B - Closed-loop adaptive ranging working method - Google Patents
Closed-loop adaptive ranging working method Download PDFInfo
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- CN101995530B CN101995530B CN 201010548684 CN201010548684A CN101995530B CN 101995530 B CN101995530 B CN 101995530B CN 201010548684 CN201010548684 CN 201010548684 CN 201010548684 A CN201010548684 A CN 201010548684A CN 101995530 B CN101995530 B CN 101995530B
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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 the modules (containing signal processing module, frequently comprehensive module, transceiver module, stube cable etc.) of device interior is measured respectively, and then adding up obtains internal delay time, and revises.
The method test is loaded down with trivial details, and can only when adopting module to exchange, then need to remeasure for individual bulk measurement, and testing efficiency is extremely low, and is subjected to external environment condition (such as temperature, weather) impact larger, 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 automatic configuration modifications value, 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 on the impact 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) time delay of AD sample circuit, the processing of solution mediation synchronizing circuit signal;
3) length of connection cable is on the impact 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 is exactly distance accuracy L again, and formula is as follows:
L=(T(is total)-T (time delay)) * C.
The whole delay T (time delay) that wherein measures 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, if system need change module or carry out module with other producers and exchange, all can adopt this algorithm.
Closed loop test circuit theory block diagram 1 is as follows:
Baseband signal processing module is processed through FPGA and is obtained the mistiming, reads the mistiming (T(is total)-T (time delay) by DSP from FPGA again) 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 (such as temperature, weather) impact, 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 efficient and the reliability of whole system.
Description of drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is 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 the equipment of strict restriction and requirement 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 is exactly distance accuracy L again, and formula is as follows:
L=(T(is total)-T (time delay)) * C.
The whole delay T (time delay) that wherein measures 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 (2)
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 automatic configuration modifications value, 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 time delay (time delay);
When formal range finding, total with T.T. T() deduct T time delay (time delay) that measures, multiply by light velocity C is exactly distance accuracy L again, and formula is as follows:
L=(T(is total)-T (time delay)) * C;
The whole delay T (time delay) that wherein measures equals:
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; Wherein, int represents transmitting terminal, and transp represents receiving end.
2. closed-loop adaptation according to claim 1 range finding method of work, it is characterized in that: baseband signal processing module is processed through FPGA and is obtained the mistiming, and reading the mistiming by DSP from FPGA again is that T(is total)-T (time delay).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010548684 CN101995530B (en) | 2010-11-18 | 2010-11-18 | Closed-loop adaptive ranging working method |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN101995530A CN101995530A (en) | 2011-03-30 |
| CN101995530B true 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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3550288B2 (en) * | 1997-11-14 | 2004-08-04 | 株式会社エヌ・ティ・ティ・ドコモ | Arrival angle delay time measuring instrument |
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Patent Citations (4)
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-148956A 1999.06.02 |
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