矩形包络脉冲串信号分析  

Analysis of the rectangular-package pulse train signal

作　　者：吕贵洲[1] 何强[1] 尚朝轩[1] 魏震生[1] 

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《电光与控制》2005年第3期43-46,共4页Electronics Optics & Control

摘　　要：　为了提高脉冲串信号的距离分辨力,曾有文献提出了对子脉冲的载频进行线性递增的方法。本文结合均匀脉冲串和载频线性递增脉冲串信号的模糊函数,分析了两类矩形脉冲串信号的性能;给出了旁瓣位置及幅度的数学描述及旁瓣抑制方法,结论为:载频线性递增脉冲串信号相对于均匀脉冲串信号提高了其距离分辨力却引入了距离旁瓣,但对于速度分辨力没有影响。仿真分析表明载频线性递增脉冲串具有更好的性能。To improve the range resolution of Mono-Pulse Train (MPT), the linear step frequency signal is introduced and used widely in modern radars. Based on the fuzzy function of pulse train and linear step frequency signal, the performance of the two kinds of pulse trains is analyzed. The mathematic description and cancellation of side-lobe position are introduced. The result is that the range resolution of linear step frequency signal is higher than MPT and the range side-lobe is imported; The Doppler resolution is not influenced. Through simulation, it is shown that linear step frequency signal has better performance than MPT.

关 键 词：模糊函数 距离-速度分辨力 脉冲串 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN957.52[电子电信—信号与信息处理]