摘要
研究了对LFM信号进行正交I/Q采样时,采样率对脉冲压缩处理的影响。理论分析证明:在欠采样情况下,脉冲压缩后会出现成对回波,因而系统的多目标分辨能力受到影响;由于信号带宽的损失,脉压输出回波信号的主瓣展宽,距离分辨力下降;另外,主瓣幅度或相位还会受到调制。最后给出了仿真的结果。
This paper discusses the effects of sampling rate on LFM pulse compression when LFM I/Q Quadrature signals are sampled. The theoretical analysis has proved that in the condition of undersampling, because the paired echoes will be appeared, the system＇s multi-object resolution will be affected. In the other hand, after pulse compression processing, the output signal＇s main lobe will be extended and its amplitude or phase will be modulated, and the range resolution will descend too. Finally, some simulation results have been displayed.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第5期600-602,675,共4页
Journal of University of Electronic Science and Technology of China
