一种改进固定单站无源定位模型性能分析

Analysis of an Improved Fixed Single Station Passive Location Model

针对固定单站无源定位中的DPFRC算法无法对目标辐射源速度进行直接解算的问题,将多普勒频率引入观测量之中,提出一种改进的固定单站无源定位模型,并通过卡尔曼滤波对定位结果进行平滑处理。将改进模型与原有模型及另外一种可对速度进行直接解算的DDFRC模型进行了仿真比较,对不同距离、不同采样间隔和不同观测精度下3种模型的性能进行了仿真分析。仿真结果表明,相比于另外两种定位模型,改进模型具有更为广泛的应用环境和更好的鲁棒性。

Based on the problem of target speed can not be directly calculated by DPFRC algorithm,a fixed single station passive location,brings forward an improved model by increasing Doppler frequency observation quantity. In the paper,the improved model is compared with the original model and DDFRC model,which is another model that can directly calculate target speed. The result shows that the improved model has wider application environment and better robustness than the other models.