机载单站固定目标测向交叉定位研究

机载平台对地面固定目标定位是电子侦察中的一项重要任务。针对机载平台的特点,提出了一种机载单站对地面固定目标的纯方位交叉定位算法,通过测量地面辐射源信号的方位角,结合机载平台的位置与航向信息,建立三维球面弧线计算模型求解目标的地理经纬度,给出了快速计算目标方位斜率的方法,通过多次融合定位提高定位精度。仿真实验中采用卫星工具开发包(STK)仿真软件生成机载平台的位置数据和目标的方位角数据,分析了多次融合定位的收敛情况及不同测向精度下的定位性能,最后给出了一些工程实践性的建议,具有一定的参考意义。

Research into The Cross Location in Airborne Single-station Fixed Target Direction-finding

It is an important task in the electronic reconnaissance that the airborne platform locates the ground fixed target.Aiming at the characteristics of airborne platform,this paper puts forward a cross location algorithm that the airborne single-station locates the ground fixed target based on azimuth only,by measuring the azimuth angles of ground radiation source signal,establishes the 3D spherical pitch arc calculation model to find the solution of geographical latitude and longitude of target combining with the position and course information of airborne platform,presents the method to calculate the azimuth slope of target rapidly,improves the locating precision through multi-fusion location,uses satelite took kit(STK) simulation software to generate the position data of airborne platform and azimuth data of target in the simulation experiment,analyzes the convergence of multi-fusion location and the locating performance at different direction finding precision,finally gives some suggestions with engineering practicality,which has definite reference meaning.