CAJ | 학술논문

非线性调频信号和二相编码信号在脉冲压缩雷达中得到广泛使用,本文对其进行分析后推导出一类非线性正切调频-混沌二相编码复合调制信号的时域表达式,这种信号兼有原两种信号的特点,仿真结果表明,该复合调制信号容易产生和处理,其匹配滤波结果对多普勒频移也不敏感,但对其匹配滤波后的离散距离旁瓣用常规的方法抑制效果不佳,本文采用网络综合法得到了理想的效果。
비선성조빈신호화이상편마신호재맥충압축뢰체중득도엄범사용,본문대기진행분석후추도출일류비선성정절조빈-혼돈이상편마복합조제신호적시역표체식,저충신호겸유원량충신호적특점,방진결과표명,해복합조제신호용역산생화처리,기필배려파결과대다보륵빈이야불민감,단대기필배려파후적리산거리방판용상규적방법억제효과불가,본문채용망락종합법득도료이상적효과。
Nonlinear frequency modulation（NLFM） signal and binary phase code signal are used widely in pulse compression radar.The time domain expression for a class of nonlinear tangent frequency modulation and chaos bi-phased codes co-modulated signal that has some features of these two signals is proposed after the two signal are analyzed.Simulation results show that the signal is not only easy to be produced and processed,but also insensitive to Doppler frequency shift after matched filtering.However,conventional methods is not effective for side-lobe suppression.So net-work synthesis is employed to restrain side-lobes and the final results are quite ideal.