摘要
传统的宽带LFM信号采样受Nyquist采样定理限制,所需采样率高,数据量大。把压缩感知理论应用到模拟LFM信号采集中,研究压缩感知基本原理和基于压缩感知的模拟信号处理方法,利用调制宽带转换器降低信号的采样频率,然后用压缩感知技术实现模拟LFM信号的准确重构。仿真结果验证了宽带调制转换器的正确性和基于压缩感知的模拟LFM信号采集的可行性。
The traditional wideband LFM signal sampling needs high sampling rate and large amount of data with the restriction of Shannon sampling theory. Compressed sensing theory and analog signal processing are studied and applied into the analog LFM signal acquisition. The modulated wideband converter（MWC） is adopted to reduce the sampling rate effectively, and then the analog LFM signals are perfectly reconstructed by the technique of compressed sensing. The simulation results validate the modulate wideband convention and the acquisition of analog LFM signal based on compressed sensing.
出处
《航天电子对抗》
2013年第3期46-50,共5页
Aerospace Electronic Warfare
