关键词: 宽带信号, 幅相校正, 阵列信号处理

Abstract:

The amplitude and phase errors cause the frequency-dependent amplitude and phase differences of channels in Wideband Digital Array Radar (WDAR).Two algorithms in time-domain and frequency-domain are introduced.The diagonal weighting matrix depends on the frequency of the diagonal factor.A modified algorithm in frequency-domain based on least squares fitting method is presented.The simulation experiment shows the performance of the algorithms in time-domain and frequency-domain and the impact to the performance of the digital beam forming (DBF),which confirms the accuracy and feasibility of the improved frequency-domain algorithm.

Key words: wideband signal;amplitude and phase correction;digital signal process