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本文提出了一种基于目标斜距两次测量值之差和方位角信息的定位跟踪算法，详细分析了该技术的定位原理和可行性。在辐射源匀速直线运动的条件下，如果能够不测俯仰角而只用方位角和距离差实现对目标的定位与跟踪，将不仅可以简化接收站的设备，而且还能够增强其独立性能，因此本文讨论的算法对于单站被动定位跟踪系统的实用性具有重要意义。本文通过典型目标航迹的计算机仿真，对算法的性能做了评估．
In this paper, a new location and tracking algorithm based on the difference between the measured values of the target slant range and azimuth information is proposed. The principle and feasibility of the technique are analyzed in detail. Under the condition of uniform and linear motion of the radiation source, if we can locate and track the target only by the azimuth and the distance difference without the pitch angle, we can not only simplify the equipment of the receiving station, but also enhance its independence. Therefore, The algorithm discussed is of great significance to the practicability of single-station passive location and tracking system. In this paper, through the computer simulation of typical target track, the performance of the algorithm is evaluated.