摘要
高频雷达工作的波段十分拥挤 ,因而可用的连续带宽比较窄 ,雷达获得距离分辨力极为有限 .为避开干扰频段能够提高系统带宽 ,本文采用了一种频带不连续的准随机跳频信号 .并根据信号的特点 ,系统地提出了该信号的二维信号处理方案 .仿真表明 ,这种方案具有解距离 速度模糊的能力 ,能有效地抑制最大距离旁瓣 ,较好地实现了距离速度二维分辨 .
Due to the heavy congestion in HF bands,HF radars are restricted to operating within very narrow bands,thus obtain a poor range resolution.A quasi-random step frequency signal with discontinuous bands is presented to improve the system bandwidth while avoiding the heavy interference bands.A two-dimension signal processing scheme for this signal is proposed on the basis of signal analysis.Simulation results demonstrate that the scheme could decouple the range-Doppler ambiguity,thus successfully realize the range-Doppler resolution and effectively suppress maximal sidelobe.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第6期801-804,共4页
Acta Electronica Sinica
关键词
随机跳频
旁瓣抑制
信号处理
random step frequencies
sidelobes suppression
signal processing
