一种机载单站对固定目标的无源定位方法  

A Passive Location Method of Airborne Single Observer for Fixed Emitter

作　　者：张卓然[1] 叶广强[1] 刘华伟[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《计算机仿真》2015年第2期92-95,105,共5页Computer Simulation

摘　　要：针对机载单站无源定位领域中,纯方位定位法对测角精度的敏感性较强,仅依靠角度的测量信息,包含的数据量小,定位精度不高的问题,提出了一种将方位角及其变化率结合起来的联合定位方法。通过深入分析定位原理,并按照定位误差的几何稀释的方法,在不同测量参数下,对地面固定目标辐射源进行了单次定位仿真。仿真结果表明,定位误差对各参数的敏感程度不同,方位角变化率的测量精度对定位误差影响最大,且联合定位方法定位精度能达到实际工程要求,可行性得到验证。In the paper, a method combining azimuth angle and its changing rate was presented. Through analy- sing the locating method, we carried out single simulation of location for the ground fixed emitter under different measurement parameters with the method of Geometrical Dilution of Precision. Simulation results show that, the sen- sitivities of locating errors for different parameters were different and the measuring accuracy of the azimuth rate has the greatest influence on the locating error. The locating accuracy of this method can fulfill the requirements of practi- cal engineering and its feasibility has been proved.

关 键 词：纯方位定位 机载单站无源定位 定位精度 方位角变化率 定位误差几何稀释 

分 类 号：TN971[电子电信—信号与信息处理]