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阵列入射信号时变参数的联合跟踪 ,是我军在现代电子战中进行有效电子防御和进攻时需要解决的首要问题 .本文针对非时变参数估计方法不能适应时变参数跟踪的问题 ,首先讨论了ESPRIT类特征值问题的转化和子空间递推更新的可行性 ,然后以平面旋转 (Givensrotation)为基础推导了关键变量的直接更新关系 ,最后采用多维参数方程并行计算的方式实现了信号二维时变参数的快速跟踪 .计算机模拟结果证实了所述方法的有效性 .
The joint tracking of array incident signal time-varying parameters is the most important issue that needs to be solved when our army conducts effective electronic defensive and offensive in modern electronic warfare.In this paper, the problem that time-invariant parameter estimation method can not adapt to time- The transformation of ESPRIT eigenvalue problem and the feasibility of recursive updating of subspace are deduced. Then, the direct update relationship of key variables is deduced based on Givens Rotation. Finally, the multi-dimensional parametric equation is used to realize the two-dimensional Fast tracking of variable parameters.Computer simulation results confirm the effectiveness of the proposed method.