摘要
线性调频(LFM)信号是脉冲压缩体制雷达中广泛应用的大时宽带宽积信号,其突出优点是匹配滤波器对回波信号的多普勒频移不敏感。根据线性调频脉冲压缩信号的时域和频域特点,运用模糊函数对该信号的性能进行分析。LFM信号具有更高的距离、速度分辨率,以及更好的低截获概率特性。给出此类信号经匹配滤波压缩处理的过程、结果及工程实现。
Chirp signal （LFM） is a kind of large time and band product signal used in pulse compression radars. It＇s advantage is non-sensitive to the Doppler shift of echo signal in the matching filter. The characteristics in both time and frequency fields of LFM compressed signal are introduced,and the capability of this signal is analyzed by ambiguity function. The LFM signal has a high resolution of range and speed, as well as low probability of intercept. The course,result and engineering implement of processing this kind signal by matching filtering are given.
出处
《航天电子对抗》
2006年第5期54-57,共4页
Aerospace Electronic Warfare
关键词
线性调频信号
脉冲压缩
旁瓣抑制
匹配滤波
chirp signal（LFM）
pulse compression
sidelobe suppression
matching filtering
