基于合作目标的外辐射源雷达发射站直接定位

doi:10.12305/j.issn.1001-506X.2023.02.09

摘要/Abstract

摘要：

外辐射源雷达利用已知位置信息的第三方发射站发射的信号作为照射源，对运动目标进行探测定位。但在实际应用中，发射站精确位置信息往往难以预先获取，给外辐射源雷达在未知环境中的快速应用带来困难。为了解决该问题，将已知轨迹的无人机作为合作目标。利用实时获取的无人机位置信息，建立了发射站位置未知时的目标直接定位模型。并进一步构建了基于目标位置的代价函数，从而实现对发射站位置的精确估计。该方法不仅可以克服常用两步定位算法中存在信息损失的不足，可达到更高的定位精度，而且利用了外辐射源雷达直达波信号，较传统直接定位方法性能更优。最后，通过仿真验证了该算法的有效性。

关键词: 直接定位, 外辐射源雷达, 发射站定位, 合作目标

Abstract:

Passive radar uses signals emitted from third-party transmitting stations with known location information as irradiation sources to detect and locate moving targets. However, in practical applications, the precise location information of the transmitting station is often difficult to beobtained in advance, which makes it difficult for the rapid application of passive radar in unknown environments.To solve the problem, unmanned aerial vehicles with known trajectories are used as cooperative targets. Using the unmanned aerial vehicle position information acquired in real time, a direct target localization model when the launch station location is unknown is developed. And the cost function based on the target location is further constructed to achieve accurate estimation of the transmitting station location.The method not only overcomes the deficiency of information loss in the commonly used two-step localization algorithm and can achieve higher localization accuracy, but also utilizes passive radar direct wave signal, which has better performance than the traditional direct localization method. Finally, the effectiveness of the algorithm is verified by simulation.

Key words: direct position determination, passive radar, transmitter positioning, cooperative target

中图分类号:

TN958.97

饶云华, 朱华梁, 郑志杰. 基于合作目标的外辐射源雷达发射站直接定位[J]. 系统工程与电子技术, 2023, 45(2): 394-400.

Yunhua RAO, Hualiang ZHU, Zhijie ZHENG. Direct position determination of transmitter based on cooperative target in passive radar[J]. Systems Engineering and Electronics, 2023, 45(2): 394-400.

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