先伪码调相后伪随机脉位调制的复合调制方案

The Compound Modulating Scheme of PRPPM-PRBC Fuze

伪随机脉位与伪码复合引信系统设计方案如果过于复杂,将难以工程实现。因此,提出先伪码调相后伪随机脉位调制的复合调制方案,运用CPLD产生了调制信号,设计并实现了本振源、伪码调相、伪随机脉位调制以及电平转换模块,实测结果表明该调制方案可行,调制结果正确。

If the system design scheme of pseudo random pulse position modulation and pseudo random binary code（PRPPM-PRBC） compound fuze is too complex,it is impossible to be implement in practical fuze system.Therefore,modulating scheme of PRBC first then PRPPM is put forward,and the modulating signal is generated by CPLD.Several units including local oscillator,PRBC modulation,PRPPM modulation and voltage transformer are designed and implemented.Test result shows that this modulating scheme is feasible and the modulating result is correct.