T/R-R高频地波雷达球面定位算法研究

摘要

T/R-R high frequency surface wave radar (HFSWR) can detect over-the-horizon sea targets which are hundredsof miles away. The earth curve should be taken into consideration when detemining target position using the measurement informa-tion obtained by HFSWR. We present sphere positioning algoririthm to calculate target position and corresponding accuracy. Weightedleast square (WLS) method is applied to sphere positioning algorithm to improve positioning accuracy. Computer simulations areleaded to analyze deviation of target position obtained by plain positioning algorithm. GDOP of sphere positioning algorithm usingWLS method is also simulated. We conclude that sphere positioning algorithm can eliminate position deviation. Besides, sphere posi-tioning algorithm using WLS method improves target positioning accuracy.%T/R-R高频地波雷达可以对海面目标超视距探测,探测距离高达几百公里,因此由雷达量测量对目标定位应考虑地球曲率影响.本文分别给出了球面定位算法及其定位精度公式.应用加权最小二乘算法可实现目标精确定位.仿真分析了平面定位偏差、加权最小二乘球面定位GDOP.结果表明球面定位算法可消除定位偏差,加权最小二乘球面定位可提高目标定位精度.