【作者】 胡泽宾；

【导师】 赵惠昌；

【作者基本信息】 南京理工大学 ， 通信与信息系统， 2006， 博士

【摘要】 伪码调相引信在舰空导弹和地空导弹中有广泛地应用，因此有必要对此类引信的干扰进行研究。本文主要研究伪码调相引信实验干扰源系统的工程应用，研究目的在于为实验室研究该引信的干扰与抗干扰技术提供实验平台，研制出针对伪码调相引信的无线电引信干扰机，从而满足军事装备发展的要求，具有广泛的军事应用前景。本文是国防科工委某研究项目的重要组成部分，围绕伪码调相引信实验干扰源系统的工程实现，主要开展了以下几项关键技术的研究。 (1) 提出了伪码调相引信实验干扰源系统方案，包括干扰源系统的干扰样式、接收机灵敏度和干扰功率的大小。针对伪码调相引信，研究了欺骗性干扰和压制性干扰的干扰机理。 (2) 研究了伪码调相引信信号的解调技术。接收机首先搜索、捕捉伪码调相引信信号，用扫频振荡源把它下变频到一个固定中频。再利用Costas环进行相干解调，获得解调输出(伪码序列)后，给出锁定信号，送至扫频控制电路，使扫频振荡器停止扫描，锁定振荡频率，该频率供后续调制电路使用。 (3) 硬件上实现了伪码调相引信欺骗性干扰。重点解决了伪码序列的识别和重构、干扰波形的调制发射等关键部件的实现原理和硬件实现。分析了欺骗性干扰的实时性和有效性。 (4) 硬件上实现了伪码调相引信窄带压制性干扰。重点解决了伪码频率的识别及同频率时钟信号的产生、伪噪声源的产生、干扰波形的调制发射等关键部件的实现原理和硬件实现。 (5) 硬件上实现了伪码调相引信瞄准式噪声调频干扰。重点解决了低频噪声源的产生和锁相环噪声调频电路等关键部件的工作原理和硬件实现。 (6) 完成了伪码调相引信实验干扰源系统的设计和研制工作。整个系统进行了外场实验，达到了预期的干扰效果，并顺利通过相关部门的鉴定。更多还原

【Abstract】 Pseudo-random code phase-modulation ( PRCPM ) fuze is applied widely in aeronautical missile and SAM, so how to jam this fuze is very necessary to study. The engineering application of experimental jamming source system for PRCPM fuze is mostly studied in the paper. The aim of research is to provide experimental platform for studying jamming and anti-jamming techniques of the fuze in the laboratory, develop radio fuze jammer for PRCPM fuze and meet the development requirement of military equipment. So it has the widely martial application prospect. This dissertation is an important part of certain national defense project. And some key techniques of the system of experimental jamming source for PRCPM fuze are studied.(1) The system scheme of experimental jamming source for PRCPM fuze is put forward. It includes mainly that jamming mode, receiver sensitivity and jamming power of experimental jamming source. The jamming principle of deception jamming and suppressing jamming for PRCPM fuze is studied.(2) The demodulation technique of PRCPM fuze signal is studied. Firstly, jamming receiver searches and catches PRCPM fuze signal. A fixed intermediate frequency signal is obtained by swept oscillator signal mixing with carrier frequency of PRCPM fuze signal. Then the fixed intermediate frequency signal is demodulated by use of Costas loop. The locked indication module outputs the locked signal when pseudo-random code sequence is obtained. The locked signal is then sent into frequency controlling circuit, which makes the swept oscillator stop sweeping and locks the frequency of oscillator, which is used by modulation circuit.(3) The hardware circuits of deception jamming for PRCPM fuze are implemented. The working principles and hardware implementation of the important parts are resolved. These include mainly recognition and reconstruction of pseudo-random code sequence, modulation and transmission of jamming waveform and so on. Finally, the real-time and effective performances of the whole system are analyzed.(4) The hardware circuits of narrowband suppressing jamming for PRCPM fuze are implemented. The working principles and hardware implementation of key circuits of the scheme are resolved. The circuits include mainly recognition of demodulated code, the generation of the same frequency clock and pseudo noise, modulation and transmission of jamming waveform and so on.(5) The hardware circuits of spot and noise FM jamming for PRCPM fuze are更多还原