CAJ | 학술논문

线性调频( LFM)信号是现代雷达系统中常用的一种重要的大时宽-带宽积信号，基于匹配滤波的数字脉压方法是LFM信号经典的信号处理方法。利用分数阶Fourier变换对LFM信号的独特聚敛性质，基于Monte-Carlo仿真分析，本文研究了基于分数阶Fourier变换的目标检测和测距方法，并与经典的脉压方法进行了对比分析，分析表明该方法的目标检测性能与匹配滤波相同，且具有运算量小、不需要存储大量滤波器系数的优点，具有一定的应用潜力。
선성조빈( LFM)신호시현대뢰체계통중상용적일충중요적대시관-대관적신호，기우필배려파적수자맥압방법시LFM신호경전적신호처리방법。이용분수계Fourier변환대LFM신호적독특취렴성질，기우Monte-Carlo방진분석，본문연구료기우분수계Fourier변환적목표검측화측거방법，병여경전적맥압방법진행료대비분석，분석표명해방법적목표검측성능여필배려파상동，차구유운산량소、불수요존저대량려파기계수적우점，구유일정적응용잠력。
Linear frequency modulation ( LFM) signal is an important large time-duration bandwidth product sig-nal used commonly in modern radar systems, and digital pulse compression based on matched filtering is a classical signal processing method of LFM signal. Since fractional Fourier Transform has special accumulating quality for LFM signal comparing with method of classical pulse compression. The results show that the target detection capa-bility of using this method is the same as that of using matched filtering, and it possesses advantageous like small operand and no need for a great deal of filter coefficient. The new method is potential in applications.