可变时宽宽带LFM信号压缩接收技术研究  

Study on Time Changeable Broadband LFM Signal Receiver

作　　者：黄俊[1] 戴梅生[1] 黄晶[1] 李华利[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2010年第3期474-475,479,共3页Piezoelectrics & Acoustooptics

摘　　要：研制了一种可变时宽宽带线性频率调制(LFM)信号数字脉冲压缩组件。该组件由A/D模块、数字下变频器(DDC)模块和脉冲压缩模块组成,着重介绍了时域实时数字脉压的方法和实现。对组件进行了试验验证,其中心频率为70 MHz,带宽25 MHz,时宽10～25μs,脉压主旁瓣比可达40 dB。A time changeable broadband linear frequency modulated（LFM） signal receiver has been designed and manufactured.The receiver consists of A/D module,DDC module and pulse compression module.The theory and realization of real time digital pulse compression in time domain are introduced in this paper.It is proved that the center frequency is 70 MHz and the bandwidth is 25 MHz.The time width is 10～25 μs,the ratio of mainlobe to sidelobe can reach 40 dB.

关 键 词：线性频率调制(LFM)信号 可变时宽 数字脉冲压缩 

分 类 号：TN761.93[电子电信—电路与系统]