中文摘要：

基于电离层斜向返回探测系统组成的多基地天波超视距定位系统,利用电离层对电波的反射,以有源定位的方式对超视距地面目标进行定位。将用于大地解算的Bowring公式与电波传播特性相结合,提出了一种天波传播模式下的目标定位模型,用以解算目标的地理位置并计算定位精度。利用计算机仿真得出了在采用不同布站类型时,电波在单模式传播情况下的定位误差的几何稀释图和定位分析。仿真结果表明,此模型精度高,并克服了传统定位方法在某些方面的不足。

英文摘要：

The high frequency multistatic location system which uses an ionospheric oblique backscatter sounding system as its core portion works in an active way to locate over-the-horizon targets by ionospheric reflection.Combining sky-wave propagation characteristics with Bowring formula which is an inverse solution of the geodetic problem,a location model is advanced to obtain target＇s coordinates and localization precision under sky-wave condition.Given the single-path propagation mode,geometric dilutions of precision（GDOP） under different station deployments are obtained with the help of computer simulation.The results present that the model is well realizable in engineering with high precision and certain deficiencies of traditional models are conquered.