窄脉冲超宽带自导信号特性与近程应用分析

Analysis of Narrow Pulse and Ultra-wideband Signals Characteristic and Its Short-range Application

传统的鱼雷自导信号多采用调制类宽带信号,但在探测近程目标时,因其探测盲区较大,会降低鱼雷命中目标的准确性。为弥补这一缺陷,文中分析了一种窄脉冲超宽带自导信号特性,通过与传统的调制类宽带信号在分辨性能、参数测量精度和多普勒速度容限等方面的比较分析,证明了窄脉冲超宽带信号具有较高的距离分辨率、较强的目标识别能力和较小的自导盲区。在近程应用时,窄脉冲超宽带信号可以比传统调制类宽带信号更好地实现末弹道对目标的连续跟踪和精确打击,在非常近的距离上作为引信信息,从而实现自导引信设计一体化。

General torpedo homing signals are usually modulating wideband signals, which have some disadvantages in shortrange detection to reduce the accuracy when a torpedo hits target, in order to make up the shortcomings, this paper analyses the characteristic of a narrow pulse and ultra-wideband homing signals, and compares it with linear frequency modulation （ LFM ） signals in resolution rate, measuring precision, Doppler velocity tolerance and so on. The results indicate that the narrow pulse and ultra-wideband signal gains higher resolution of distance, stronger ability of target identification and smaller homing blind area. Based on these features, a torpedo can eonrinually track and accurately attack target on its terminal trajectory when the narrow and ultra-wideband signals is used in short-range detection. And at very short distance, the echo can also be used as fuze informarion to implement the integrated homing fuze design.