伪随机码调相引信

本文论述了选择伪随机码波形的依据是由于用了这种波形调制的引信具有近似图钉形模糊函数、有良好的距离截止特性、较高的信噪比和较强的抗干扰能力;用数学式分析了本系统的工作原理;分析了伪随机码相关函数具有极为陡峭的相关特性,采用相关技术是本引信提高抗干扰能力和提高对微弱信号的检测灵敏度的关键、由于伪码参数的可选择性,可以根据武器系统的实战情况用指令改变码参数,使引信具有半智能化功能。最后论述了采用微机技术进行信息处理,可以实现引信中难以实现的引战配合。

PROXIMITY FUZE PHASE-MODULATION BY PSEUDO-RANDOM CODE

In this paper is discussed the basis for the selection of the pseudorandom code waveform in the modulation of the proximity fuze. Selection of pseudo-random code waveform is based on the following points in its favor: the proximity fuze modulated by this waveform has a close to thumbtack ambiguity function, better range cut-off characteristics, higher signal-to-noise ratio and distinguished ability of jamming signal. The operating principle of this system is analyzed mathematically. In virtue of its possession of precipitous correlation function, making use of the correlation technique in such fuzes is the key to increasing the ability of anti-jamming and the sensitivity of detecting faint signals. Since the parameters of the pseudo-random code can be selected, they can be changed to fit the demands of practical battlefield operation of the weapon systems, enabling the proximity fuze to act with semi-intelligence. And since information is processed with micro-computer techniques, the best coordination between the proxi mity fuze and the projectile can be realized which is difficult to realize thus far in the field of proximity fuzes.