摘要
为了减小漏脉冲和干扰脉冲对激光解码的影响、提高导引头解码器的实时性和准确性,在分析伪随机编码原理和制导信号解码过程的基础上,采用基于数字匹配滤波器的识别方法对制导信号进行搜索识别,提出了一种自适应扩展实时波门技术实现对目标的锁定跟踪。解码器系统的硬件采用现场可编程门阵列来设计和实现,并进行了仿真测试及系统实测验证。结果表明,在接收到一组编码信号的当前周期内即可完成码型识别,解码实时性好;在正常波门宽度为5μs的自适应扩展实时波门下,100kHz高重频干扰信号的干扰成功概率降低至50%,有效提高了制导的抗干扰性。此研究有利于提高半主动激光制导武器的命中精度和可靠性。
To improve the real-time performance and accuracy of the seeker decoder andreduce the effects of missing pulses and interference pulses on laser decoding,an identification method based on the digital matched filter and an adaptive extended real-time gate technique was proposed to search and track the target.The decoder system was designed and implemented based on a field-programmable gate array(FPGA)chip.The simulation and experimental results show that the code pattern identification can be completed within the current period of a set of encoded signals,and the real-time of the decoder system is good.For the 100kHz high pulse repetition frequency interference,the proposed real-time gate technique with a normal gate width of 5μs reduces its interference probability to 50%and effectively improves the anti-jamming performance of the guidance.This study is conducive to improving the accuracy and reliability of semi-active laser-guided weapons.
作者
曹晓荷
朱斌
尚建蓉
王升哲
郑杰
范文瑞
CAO Xiaohe;ZHU Bin;SHANG Jianrong;WANG Shengzhe;ZHENG Jie;FAN Wenrui(Southwest Institute of Technical Physics, Chengdu 610041, China;The Fourth Military Representative Office of the Rocket Force Equipment Department in Chengdu, Chengdu 610000, China)
出处
《激光技术》
CAS
CSCD
北大核心
2021年第2期155-161,共7页
Laser Technology
关键词
激光技术
激光解码
数字匹配滤波器
实时波门
laser technique
laser decoding
digital matched filter
real-time gate
