一种实现超低旁瓣的脉冲压缩算法  

Ultra-low Range Sidelobe Pulse Compression Arithmetic

作　　者：王萱芬 李巍 王子立 

机构地区：[1]北京遥感设备研究所,北京100854

出　　处：《现代电子技术》2009年第23期5-7,共3页Modern Electronics Technique

摘　　要：建立了功率放大器的Wiener模型,用Matlab仿真分析了功率放大器对发射机和接收机中都用Kaiser窗加权的脉冲压缩算法性能的影响,得出功率放大器对不具有矩形包络的Kaiser窗加权信号产生幅度失真,降低主副瓣比的结论。然后利用谱修正技术对该算法进行了改进。改进之后,发射信号具有矩形包络,既能实现超低旁瓣,又能使功率放大器的非线性特性对脉压结果的影响较小。The Wiener model of power amplifier is proposed and the effect of power amplifier on the double Kaiser window weighted on transmitter and matched filter is analyzed by Matlab simulation. The conclusion is obtained that power amplifier can distort the amplitude of the signal whose envelopment is not rectangular and the mainlobe to sidelobe ratio is reduced. Then, the arithmetic is improved by employing spectra modification technology, as makes the envelopment of transmitted signal is rectangular. This not only achieves ultra - low sidelobe, but also the effect of power amplifier on pulse compression performance is little.

关 键 词：脉冲压缩 超低旁瓣 KAISER窗 谱修正技术 

分 类 号：TN957.51[电子电信—信号与信息处理]