基于高低轨联合的空中目标三维定位侦察技术

Three-dimensional localization of aerial target based on joint high-and-low orbit satellites

传统三星时差无源定位系统无法实现目标的三维定位,高程假设会引起较大的定位误差。研究了基于高低轨联合的四星时差三维无源定位技术,建立了定位模型,分析了定位精度,并进行了仿真验证。仿真结果表明,基于高低轨联合的目标三维定位技术具有较高的定位精度,并且能够实现空中目标的三维定位,避免了目标高程假设带来的系统误差。

The traditional tri-satellite TDOA locating system can’t realize the three-dimensional location,and the altitude of target brings the main locating errors to the locating system. The three-dimensional passive localization based on four joint high-and-low orbit satellites is studied. The accuracy of this locating system is analyzed. And according to the simulation results, for the aerial targets, this locating system based on joint high-and-low orbit satellites has high precision of three-dimensional localization. Meanwhile, the locating errors brought by target’s altitude are avoided.