Abstract:For linear and non-linear frequency modulation (LFM/NLFM) signals with large time-bandwidth product (TB),radar super-resolution in range domain at low SNR is investigated.A novel signal enhancement algorithm based on FFT for LFM/NLFM signals used for preprocessing,which significantly raises the effective signal-to-noise ratio(SNR),is presented.By use of decorrelation between echoes of different targets achieved by pulse-to-pulse carrier frequency hopping,a vvariety of approaches are suggested to further lower the SNR threshold for range super-resolution.Monte-Carlo simulation results are presented to illustrate the inproved performance.
刘晟; 向敬成. 利用脉间跳频和信号增强技术实现低信噪比下雷达距离超分辨[J]. 电子与信息学报, 1998, 20(4): 445-452 .
Liu Sheng; Xiang Jingcheng. RANGE SUPER-RESOLUTION AT LOW SNR VIA INTERPULSE FREQUENCY HOPPING AND SIGNAL ENHANCEMENT. , 1998, 20(4): 445-452 .