宽带欠采样信号处理解模糊方法

Sub-Sampling Wide-Band Signal Unambiguous Processing

对余数法解频率估计模糊方法作了分析 ,提出了虚拟采样速率概念 ,清晰地叙述了无模糊频率估计范围与虚拟采样速率之间的关系 ;对特殊宽带信号提出了相应的解模糊处理方法 ;对多信号情况 ,提出了利用信号参数进行配对。模拟结果显示本方法是有效的。

Based on the Chinese Remainder Theorem to resolve the a mbiguity of frequency estimation, the concept of imaginary sampling is introduce d. The unambiguous bandwidth B n equals the imaginary sampling rate (for co mplex signals). The method to resolve the ambiguity of special wide-band signal proce ssing is proposed. The method to pair remainders for multiple signals by paramet er using two A/D only is also proposed. Simulational results confirm the ir availability.