两坐标雷达组网中目标高度与系统误差联合估计

Joint estimation of target height and systematic error for two-dimensional radar network

针对目前两坐标雷达组网系统误差估计忽略了目标高度影响的问题,采用模块化方法,将3部两坐标雷达组网分成平面与空间两个模块进行目标高度与系统误差的联合估计,提高了系统误差估计的精度。首先分析目标高度对系统误差估计的影响,接着详细推导基于极大似然估计法的目标高度与系统误差联合估计模型,并给出估计流程图,最后建立仿真模型对算法进行验证,并和传统方法进行比较。仿真结果显示,所建立的模型能够精确估计出目标平面位置和高度信息,实现目标的三维准确定位,并且同样能精确估计出传感器系统误差,验证了算法的准确性和有效性。

To solve the problem of target height effect in systematic error estimation in the two-dimensional radar networking system, a modular method is used to divide the system into plane and space modules for target height and systematic error joint estimation, which increases the accuracy of systematic error estimation. First- ly, effects of target height on systematic error estimation are analyzed. Then a target height and systematic er ror estimation model is derived in detail for a three two dimensional radar networking system based on the exact maximum likelihood estimation method. At the same time, the flow chart is given. At last, a simulation model is established to validate the accuracy and effectiveness of the algorithm, which is compared with traditional methods. Simulation results show that the model can accurately estimate three-dimensional location of the target, and can also ac- curately estimate the systematic error, which verifies the accuracy and effectiveness of the algorithm.