CAJ | 학술논문

本文提出一种不同于常规脉压的扩展脉压，这种脉压方式可以得到更多的信号信息，为超宽带LFM脉压信号产生系统提供有效的分析手段。本文首先介绍了扩展脉压的原理，并在工程调试中加以应用。借助这种分析方法确定了某机载SAR超宽带LFM波形产生系统出现成对回波的原因，并分析了载漏和镜频对波形脉压性能的影响，为改善系统性能提供了依据。改进后的波形产生系统的脉压性能优良，满足了系统要求。
본문제출일충불동우상규맥압적확전맥압，저충맥압방식가이득도경다적신호신식，위초관대LFM맥압신호산생계통제공유효적분석수단。본문수선개소료확전맥압적원리，병재공정조시중가이응용。차조저충분석방법학정료모궤재SAR초관대LFM파형산생계통출현성대회파적원인，병분석료재루화경빈대파형맥압성능적영향，위개선계통성능제공료의거。개진후적파형산생계통적맥압성능우량，만족료계통요구。
An expended pulse compression which is different from traditional pulse compression is proposed. More signal information can be obtained by using this pulse compression, which provides an effective analysis means for ultra-wideband ( UWB) linear frequency modulation ( LFM) waveform generating system. Principle of expended pulse compression and its practical application in engineering adjustment are introduced. By using this analysis method, the reason leads to generation of paired return signals in the UWB LFM waveform generating system for an airborne synthetic aperture radar ( SAR) is found, and impact of carrier leak and the image frequency jamming on waveform pulse compression performance is analyzed, which provides some reference for system performance im-provement. The improved waveform generating system can provide good pulse compression performance to meet sys-tem demands.