低重频雷达消除“盲速”的动目标显示方法  

MTI Method of Eliminating ＂Blind Speed＂ in Low Repetition Frequency Radar

作　　者：何光明[1] 黄云[1] 

机构地区：[1]中国电子科技集团公司第20研究所,西安710068

出　　处：《探测与定位》2010年第2期32-35,共4页

摘　　要：低重频动目标显示雷达中通常存在多普勒频率所引起的“盲速”现象，常采用参差脉冲重复频率的方法来克服这种不利影响。对于发射频率可变的雷达，也可以采用调整发射频率来改变雷达回波的多普勒率的动目标显示方法，即克服“盲速”影响而且简化了系统设计，本文分别对参差脉冲重复频率及调整发射频率两种方法进行了研究，最后得出了低重频雷达消除“盲速”的动目标显示有效实现方法。＂Blind speed＂ phenomenon due to Doppler frequency usually exists in moving target indication radar of low repetition frequency. This disadvantage affect is avoided throguh staggered pulse repetition frequency method. Changing the send frequency is adopted, which is used to change doppler frequency of radar echo signals. It not only can completely avoid the affect of ＂blind speed＂, but also simplifies system design. In this paper, two methods are researched, and the corresponding results of eliminating ＂blind speed＂ in low repetition frequency radar are finally presented.

关 键 词：盲速 参差 重复频率 频率捷变 

分 类 号：TN972.41[电子电信—信号与信息处理]