基于无线信道仿真仪的双星定位半实物仿真

构建无源电子侦察双星时差频差定位系统半实物仿真平台,以雷达及通信信号为侦察对象,采用无线信道仿真仪模拟产生两颗同轨卫星接收地面同一目标辐射源发射信号,通过数字接收机VPX机箱中的两块板卡同步接收信号数据,进行实时处理。实验表明,构建的半实物仿真平台,与纯数字仿真相比,能够准确、实时、有效地反映双星时差频差定位系统的性能。

Dual-satellite geolocation semi-physical simulation technology based on radio channel simulation instrument

The semi-physical simulation platform of the passive dual-satellite TDOA/FDOA geolocation system is constructed with the object of radar and communication signals. The arriving signals received by two satellites separately from the same emitter are simulated by the radio channel simulation instrument, which is then received and processed in synchronization by two electronic board of the digital receiver in real time. According to the simulation experiment, the constructed semi-physical simulation platform, compared to the digital simulation in Matlab, is able to verify the the performance of the dual-satellite TDOA/FDOA geolocation system.