摘要
零值深度现象是角跟踪系统高频相移的外在体现,它的存在使得雷达的跟踪精度下降。文中针对采用数字比相技术的和差比幅单脉冲角跟踪体制,首先分析了系统的高频相移,然后引入了零值深度的定义,分析了零值深度对角跟踪的影响,最后重点讨论了2种在工程中补偿零值深度的方法,经实验验证该方法可以有效地去除零值深度的影响,改善雷达的跟踪性能。
Null-depth is the apparent embodiment of high frequency phase shift in angle tracking system, the existence of which leads to reduction of precision in the tracking process. In terms of monopulse angle tracking system based on amplitude comparison of sum and difference signals, this paper first analyzes high frequency phase shift and then gives the definition of null-depth. After that the effect of null-depth on angle tracking is discussed, on basis of which two ways to compensate null-depth are introduced with their efficiency verified by experimental data.
出处
《现代雷达》
CSCD
北大核心
2009年第6期75-78,共4页
Modern Radar
关键词
雷达
角跟踪
数字比相
零值深度
radar
angle tracking
digital phase comparison
null-depth
