摘要
为了实现相干激光引信对空中高速目标产生的高频大带宽多普勒信号的高精度处理,设计了一套基于PPGA+DDS的信号处理系统,采用扫频定位配合精准变频的信号处理算法,先扫频定位信号频率,再将信号移频到易处理频段进行高精度解算。对信号处理系统的大带宽信号处理性能进行试验,结果表明系统可对速度600 m/s以内目标产生的多普勒信号进行高精度处理。文章设计的信号处理系统对相干激光引信具有较高的实用价值。
In order to realize the high-precision processing of high-frequency and large-bandwidth Doppler signals generated by high-speed targets in the air by coherent laser fuze,a signal processing system based on FPGA and DDS is designed.The signal processing algorithm of swept-frequency positioning and accurate frequency conversion is adopted.Firstly,swept-frequency signals is used to locate the signal frequency,and then the signal frequency is shifted to the easy-to-process band for high-precision solution.The experiment of the signal processing system for large-bandwidth signals shows that the system can process Doppler signals generated by targets within 600 m/s with high precision.The signal processing system in this paper has high practical value for coherent laser fuze.
作者
刘扬
王凤杰
陆长平
刘锡民
LIU Yang;WANG Feng-jie;LU Chang-ping;LIU Xi-min(The Sixth Military Representative Office in Shanghai,Naval Equipment Department,Shanghai 201109,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China)
出处
《制导与引信》
2019年第3期10-15,共6页
Guidance & Fuze
关键词
相干激光引信
信号处理系统
大带宽
变频
coherent laser fuze
signal processing system
large-bandwidth
frequency conversion
