基于改进的Hough变换的多目标无源测向交叉定位技术

Multi-target Passive Direction Finding Cross-location Technology Based on Improved Hough Transform

测向交叉定位方法是无源定位方法中发展较早和应用较广泛的一种定位方法,该方法具有全方位、快速、探测距离较远、抗干扰能力强等优点,无论是在民用方面还是军用方面都具有很好的应用前景。主要针对多目标的测向交叉定位中虚假定位点(鬼点)的去除问题进行了研究,提出了一种改进的Hough变换法去除虚假定位点,解决了考虑测向误差时去除虚假定位点的问题。该方法简单直观,计算量小,而且通过仿真可以看出利用此方法去鬼点有很好的效果。

In passive location methods, direction-finding （DF） cross location method is developed early and applied widely. This method has the advantages of omni-directional, fa s t, far-off detection range and strong anti-interference ability, so it has a very good application prospects whether in civ-il or military aspects. This paper studies the problem how to remove the false location points which are produced in the multi-target direction-finding cross-location, puts forward an improved Hough transform method to remove the false location points, which solves the problem of removing the false location points when the DF error is considered. The method is simple and intuitive, and the calculation quantity is small. Through the simulation,this method is proved to have a good effect on removing false location points.