Three-station time-difference positioning performance test evaluation method

A technology of time difference positioning and performance, applied in the field of passive detection

Inactive Publication Date: 2015-01-28
中国人民解放军63891部队
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Problems solved by technology

[0009] In order to overcome the deficiencies in the background technology, the present invention provides a three-station time-difference positioning performance test evaluation method, which is aimed at the test evaluation requirements of plane three-station coordinated time-difference positioning performance, comprehensively considers

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[0128] specific implementation plan

[0129] Due to the limitation of test time and funds, it is impossible to directly obtain the positioning performance of the multi-station time-difference positioning system for any point in space. In order to evaluate the positioning performance of the time-of-flight positioning system, the ground station arrangement of the tested time-of-flight positioning system is usually adopted, the airborne radiation source flies according to the predetermined route, and the positioning error of any position or the positioning error GDOP of any plane is obtained by processing the test data.

[0130] The key to the test and evaluation technology of time difference positioning performance is to establish a comprehensive time measurement error model and a positioning error model. The comprehensive time measurement error model includes the time difference measurement error caused by the signal-to-noise ratio and other comprehensive time measurement errors...

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Abstract

The invention, which belongs to the technical field of passive detection, discloses a three-station time-difference positioning performance test evaluation method. A three-station time-difference positioning performance test evaluation model is established, and deployment of a time-difference positioning system and a flight route of an airborne radiation source or airborne radar signal simulator are designed; on the basis of a positioning error test result of the whole flight route, an unknown parameter in an integrated time measurement error model is resolved; and with the integrated time measurement error model and a positioning error GDOP model, a positioning error at any position or a positioning error at any plane can be obtained. According to the invention, the resolving method of correlated parameters in the integrated time measurement error model as well as the positioning error in any station distribution mode and at any radiation source position are provided. Therefore, a three-station time-difference positioning performance test evaluation problem according to the background technology can be solved; defects of the ideal or fixed integrated time measurement error model can be overcome; and the method can be promoted to the ground test mode field without radiation source flight.

Description

technical field [0001] The invention belongs to the technical field of passive detection, and is especially suitable for a three-station time difference positioning performance test evaluation method. Background technique [0002] The time-of-flight positioning system can detect and locate space radiation sources, and has the characteristics of long detection distance, strong anti-interference ability, high positioning accuracy and fast response speed, so it is widely used in navigation, aviation, aerospace and electronic warfare and other fields. The time-difference positioning system consists of multiple base stations, including a main station and several auxiliary stations. The main station is the information processing center of the time-difference positioning system. Under unconstrained conditions, at least four stations are required to realize the three-dimensional passive positioning of any space radiation source. The radiation source signal is received by two receive...

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Application Information

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IPC IPC(8): G01S5/00
CPCG01S5/00
Inventor 李文臣李宏陆静袁翔宇满莹张政超周磊徐少坤王凌艳陈东东马孝尊徐忠富
Owner 中国人民解放军63891部队
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