摘要
针对靶场试验中曳光榴弹弹尾曳光对微波多普勒引信作用可靠性产生的不利影响,进行了曳光影响微波多普勒引信的静态试验和外场回收试验。通过对试验数据分析,得到了弹尾曳光噪声的统计特征,表明曳光噪声频谱已经进入微波多普勒引信的接收信号频率范围,从而导致微波多普勒引信信噪比的降低,为微波多普勒引信改进信号处理提供了参考数据。文中讨论了对回波信号幅度分段求和及小波阈值去噪两种曳光噪声抑制方法,但均存在不足,有待一步改进。
It was proved that racer flame had adverses influences to microwave proximity fuzes in some firing tests. In this paper, tracer captive test and fuze recovery test were adopted to study the influences, and the data from the tests were analyzed in both time domain and frequency domain. It was found that the tracer noise had come into the working frequency band of the microwave proximity fuzes and caused the fuzes signal-to-noise ratio reducing, which meant more difficulty in target detection. The tests provided reference data and testing signals to the improvement of the microwave proximity fuzes, and two methods of tracer noise suppression were discussed in the paper.
出处
《探测与控制学报》
CSCD
北大核心
2012年第2期15-18,25,共5页
Journal of Detection & Control
