无人机具有体积小、功耗低、重量轻等优点。结合无源定位,提出了应用伪到达时间定位技术的无人机多站无源定位模型,给出了定位原理,并详细推导了定位精度。仿真分析了基线长度、站址校准时间间隔对定位精度的影响。根据理论仿真的效果,可知提高目标定位精度的方法有增加站间距离和减少站址校准时间间隔。

UAV has the advantages of small volume, low consumption and light weight etc. Based on the principle of passive location, precision analysis for UAV multiple observers passive location based on pseudo-DOA is proposed in this paper. The principle of passive location is introduced and its location precision is deduced in detail. Then the influence of baseline length of station distribution and time interval to adjust station address are simulated and analyzed. Finally, several constructive suggestions to improve the target positioning accuracy methods-increasing the distance between stations and reducing the time interval of the station calibration.

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