伪码调相PD引信抗干扰性能测度理论和方法  

Theory and Method for Evaluation of Anti-jamming Capability of Phase Modulated by Pseudorandom Code Combined with Pulse Doppler Fuze

作　　者：周新刚[1] 赵惠昌[1] 徐元银 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094 [2]中国兵器集团成都火控技术中心,四川成都611731

出　　处：《南京理工大学学报》2010年第2期176-181,共6页Journal of Nanjing University of Science and Technology

基　　金：江苏省普通高校研究生科研创新计划资助项目(CX08B_077Z);总装备部预研基金(9140A05060209BQ0210)

摘　　要：提出用模糊函数切割法评判伪码调相脉冲多普勒(PD)引信的固有抗干扰性能。该引信模糊图切割面面积的计算结果表明,伪码调相PD引信的固有抗干扰性能随脉冲宽度的增大而线性减弱,固有抗干扰性能及其改善程度与调制的伪码序列长度成正比。通过与PD引信固有抗干扰性能的比较,发现在研究的脉冲宽度(0.8～4.0μs)内,伪码调相PD引信的固有抗干扰性能明显强于前者。研究结果表明,基于模糊函数切割法的无线电引信抗干扰性能测度理论和方法不但能够测度同一体制不同工作参数下引信的固有抗干扰性能,而且能够评判不同体制引信在指定工作参数下的固有抗干扰性能。The method of ambiguity function incision is proposed to evaluate the inherent anti-jamming capability of pseudorandom code combined with pulse Doppler（Pseudo-noise pulse Doppler（PN-PD）） fuze.The incision areas of the fuse ambiguity diagrams are calculated.The inherent anti-jamming capability of the PN-PD fuze gets weaker with pulse width widening linearly.The inherent anti-jamming capability of PN-PD fuze and its improvement extent are in direct proportion to the modulated m-sequence length.Compared with the inherent anti-jamming performance of the pulse Doppler fuze,it is demonstrated that the inherent anti-jamming capability of PN-PD fuze within the range of 0.8~4.0 μs is remarkably stronger than the former one.The research results show that the evaluation methodology based on the method of ambiguity function incision can not only evaluate the inherent anti-jamming capability of the same type of fuze with different working parameters and of different types of fuzes with specified working parameters.

关 键 词：脉冲多普勒 抗干扰性能 测度 模糊函数 伪码调相 

分 类 号：TN973[电子电信—信号与信息处理] TJ43[电子电信—信息与通信工程]