基于PXI的导弹引信对抗仿真系统设计

Design of Missile Fuse Countermeasure Simulation System Based on PXI

针对引信操作培训需求,分析了伪码调相脉冲引信工作原理和伪随机码自相关性及抗干扰性,确定了码元宽度、伪码周期等参数选取原则,提出了导弹引信对抗仿真系统的总体设计需求、思想和方案,采用虚拟仪器技术,设计了一种引信对抗仿真系统。利用系统对高斯白噪声情况下的伪码调相脉冲引信的抗干扰性能进行仿真,结果表明:引信调制增益受多普勒频率、码元宽度和伪码长度等因素的影响,码元宽度越窄,伪码序列越长,伪码调相脉冲引信受到噪声的干扰越不明显。该系统可不受引信理论学习和操作培训中的时间和空间限制,有效满足实际需要。

According to the requirement of fuse operation training,the principle of pseudo-random code phase modulation pulse fuse,the autocorrelation and anti-jamming performance of pseudo-random code were analyzed.The principle of parameter selection such as code width and pseudo-random code period was determined.The overall design requirements,ideas and schemes of missile fuse countermeasure simulation system were put forward.Based on virtual instrument technology,the fuse countermeasure simulation system was designed.The anti-jamming performance of the pseudo-random code phase modulation pulse fuse under the condition of Gaussian white noise was simulated.The results show that the modulation gain of the fuse was affected by Doppler frequency,symbol width and PN code length.The narrower the code width is,the longer the PN code sequence is,the less obvious the interference of the PN code phase modulation pulse fuse is.The system is not limited by time and space in fuse theory learning and operation training,and can effectively meet the actual needs.