测向交叉定位系统中的交会角研究

研究了测向交叉定位系统中的交会角问题,以往许多学者对此问题的研究是在运动目标到基线的距离等于常数的前提下给出的,现不受这个条件约束推导出了定位精度达到最高的测向线交会角大小,得出了满足一定定位精度要求的交会角范围,并给出了整个探测区域内圆概率误差与两个无源观测站方位角以及与交会角之间的关系曲线图,同时给出了整个探测区域内的GDOP分布图。该问题的研究对于实现多站测向交叉定位系统中无源传感器的优化选择和合理布置,提高定位精度具有一定的理论意义和实际意义。

Study on Cut Angle of Direction Finding Location System

This paper studies the cut angle problem of direction finding location system. In the past many researchers study this problem on the assumption that the distance between the target and the baseline is constant, i.e. the target moves along the parallel line of the baseline. In this paper we take no account of this restriction, and give the optimal cut angle of the whole detection area when the circular probable error is minimum. The relationship between the circular probable error and the bearing measurements of passive sensors or the cut angle is shown in simulation figures, and the GDOP distribution figure is also given. Some conclusions are drawn, which can be used for reference in collocating passive sensors to improve location precision.