利用测向信息消除高重复频率信号的时差定位模糊
doi: 10.3724/SP.J.1146.2009.01618
Eliminating TDOA Location Ambiguity of High PRF Signal Based on Direction Information Acquired
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摘要: 该文针对三星时差定位系统对高重复频率信号的定位模糊问题，提出在主星增加干涉仪测向并结合测向信息解模糊的思路。由于干涉仪本身有可能出现测向模糊，进一步提出了根据模糊测向信息解时差定位模糊的方法，其在无测向模糊时同样适用。该方法定义了时差定位点的距离参数，通过对其做门限检测去除虚假时差定位点，从而有效地减少了模糊定位点数量，改善了对高重频信号的定位模糊问题。Abstract: For the issue of location ambiguity of high PRF(Pulse Repetition Frequency) signal in three satellites TDOA (Time Difference Of Arrival) passive location system, a new method based on direction information acquired by adding interferometer on main satellite is presented in this paper. Considering ambiguity may occur in direction finding with interferometer, a method is proposed to eliminate location ambiguity by using ambiguous direction information, which is also practicable without ambiguity in direction finding. Firstly, the distance parameter defined in this method of every location is computed, and then false locations are eliminated by threshold detection. This method is able to reduce the number of ambiguous locations, and improve location ambiguity effectively.
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梁景修. 高重频雷达精确快速定位的方法[J].电子对抗技术.2005, 20(5):19-22Liang Jing-xiu. Quick and accurate location of high PRF radar[J]. Electronic Warfare Technology, 2005, 20(5): 19-22.[2]李涛，姜文利，周一宇. 高重频信号三星座时差定位研究[J].电子对抗技术.2004, 19(4):7-11Li Tao, Jiang Wen-li, and Zhou Yi-yu. TDOA location with high PRF signals based on three satellites[J]. Electronic Warfare Technology, 2004, 19(4): 7-11.[3]张宏元，穆贺强. 基于相关算法消除高重频信号的时差定位模糊[J].系统工程与电子技术.2008, 30(5):816-818Zhang Hong-yuan and Mu He-qiang. Eliminating TDOA location ambiguity about HPRF signal based on correlation algorithm[J]. Systems Engineering and Electronics, 2008, 30(5): 816-818.[4]钟珲，陈守稳. 时差与测向结合解高重频信号定位模糊的方法[J]. 现代防御技术，2008, 36(5): 108-112.Zhong Hui and Chen Shou-wen. Approach combining with radar direction finding of solving ambiguous location with high PRF signal[J]. Modern Defence Technology, 2008, 36(5): 108-112.[5]陆安南. 基于模糊测向结果的单星无源定位法[J]. 电子对抗, 2002, (3): 6-11.Lu An-nan. Passive location by single satellite based on ambiguous direction finding[J]. Electronic Warfare, 2002, (3): 6-11.[6]符为. 对地面目标的时差定位精度研究[J]. 电子信息对抗技术，2008, 23(6): 17-20.Fu Wei. DTOA location precision of target on the ground[J]. Electronic Information Warfare Technology, 2008, 23(6): 17-20.[7]陆安南. 单星无源测向定位及精度分析[J]. 电子科学技术评论, 2000, (1): 23-26.Lu An-nan. Location and precision analysis of direction- finding based on single satellite [J]. Review of Electronics Science and Technology, 2000, (1): 23-26.[8]胡来招. 无源定位[M]. 北京：国防工业出版社，2004: 25-30.[9]Hu Lai-zhao. Passive Locating[M]. Beijing: National Defence Industry Press, 2004: 25-30. -
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