主站偏心的场面监视系统及性能分析

doi:10.3969/j.issn.1001-2400.2011.02.031

J4 ›› 2011, Vol. 38 ›› Issue (2): 173-179.doi: 10.3969/j.issn.1001-2400.2011.02.031

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Surface surveillance system of main station off-center and performance analysis

GONG Fengxun;LEI Yanping;MA Yanqiu

(Tianjin Key Lab. for Advanced Signal Proc., Civil Aviation Univ. of China, Tianjin 300300， China;)

Received:2010-04-08 Online:2011-04-20 Published:2011-05-26
Contact: GONG Fengxun E-mail:gfxcauc@eyou.com

Abstract

Abstract:

Since location accuracy for low-altitude targets is not good in the Short-Baseline system, a program of the main station off-center of eight-station arrangement is proposed. Firstly factors are analyzed which influence the location accuracy for line-of-sight environments. Then the relationship between main station position and location performance is researched, and a location method for the main station off-center of eight-stations is put forward by increasing the base-station number and layout of the main station off-center, which realizes multiple coverage of the monitoring area using the redundant measurement information by the main station off-center and more base stations provided. Finally the number of base stations and optimal disposition way for low-altitude targets are obtained in the airport by simulating the geometric dilution of precision (GDOP) distribution. Simulation figures and data show that the main station off-center of eight-station arrangement can be achieved over 95% coverage of the airport for low-altitude targets location.

Key words: low-altitude targets, base-station number, geometric dilution of precision, disposition way

GONG Fengxun;LEI Yanping;MA Yanqiu. Surface surveillance system of main station off-center and performance analysis[J].J4, 2011, 38(2): 173-179.

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[1]	NIU Xin-liang;ZHAO Guo-qing;LIU Yuan-hua;CHANG Hong. High precision passive TDOA location method for low-altitude targets [J]. J4, 2009, 36(5): 862-866.
[2]	NIU Xin-liang1;ZHAO Guo-qing1;LIU Yuan-hua2;CHANG Hong1. Near-space platform aided passive tracking algorithm for super-low-altitude targets [J]. J4, 2009, 36(3): 438-442.

Surface surveillance system of main station off-center and performance analysis

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