基于最小范数准则的多普勒频率高精度估计

High Precision Estimation of Doppler Frequency Based on MN

提出一种雷达回波多普勒频率的高精度估计算法。算法利用脉冲间干扰和噪声的相关性较弱,从而在脉冲链自相关矩阵中抑制干扰及噪声分量。并基于最小范数准则实现多普勒频率估计。该算法在多种干扰/噪声背景下估计精度接近CRB,且计算量较小。仿真实验也验证了算法的有效性。

A high precision arithmetic for estimating Doppler frequency is proposed. As for there have weak correlation between the interferences contained in radar echo pulse, the interferences were restrained in the self-correlation matrix effectively, and then the Doppler frequency can been estimated based on minimum norm （MN）. The performance of proposed arithmetic approaches the Cramer- Rao hound, and its computation complexity is low also. Simulation results show that the proposed method is the effectiveness.