Limited innovation rate-based pulse string signal undersampling system and method

The present invention relates to a limited innovation rate-based pulse string signal undersampling system and method, and relates to the signal processing technology field. According to the present invention, by utilizing the parameterized characteristics of a pulse string signal, and by the four-channel modulation, amplification, low-pass filtering and undersampling processing, the discretely distributed Fourier coefficients in the frequency spectrum of the pulse string signal are obtained, and then the unknown amplitude and time delay parameters are reconstructed by few obtained Fourier coefficients. According to the present invention, the time delay reconstruction precision is very high, and the amplitude estimation only has a very small error. 基于有限新息率的脉冲串信号欠采样系统及方法，涉及信号处理技术领域。本发明利用脉冲串信号的参数化特性，通过四通道调制、放大和低通滤波和欠采样处理，获取脉冲串信号频谱中离散分布的傅立叶系数。再通过获取到的少量傅立叶系数重构出未知的幅值和时延参数。本发明的时延重构精度很高，幅度估计只有很小的误差。