动目标显示滤波器频率响应仿真分析  

Analysis of frequency response simulation on MTI filter

作　　者：张美星[1] 何强[1] 韩壮志[1] 

机构地区：[1]军械工程学院光学与电子工程系,河北石家庄050003

出　　处：《信息与电子工程》2011年第4期487-490,共4页information and electronic engineering

摘　　要：动目标显示(MTI)滤波器的频率响应曲线反映了雷达接收机对不同速度回波信号的处理能力,是评价雷达性能的一项重要指标。本文针对MTI滤波器频响曲线理论模型与实际测试的区别,分析了机内热噪声及A/D量化噪声对MTI滤波器频响曲线测试结果的影响,讨论了最大衰减与最小可分辨频率随这两种噪声的变化规律,并通过仿真进行了验证。The frequency response of Moving Target Indication（MTI） filter is an important indicator to evaluate the performance of radars, which affects the abilities for the receivers to process the echo signals at different speeds. According to the difference between the theoretical model and practical testing, the effects of thermal noise and A/D quantization noise on the frequency response are analyzed in this thesis, then, how the maximal attenuation and the minimal resolving frequency change with these noises is discussed. The conclusion is drawn and validated by simulation.

关 键 词：对消器 MTI滤波器频率响应 机内热噪声 A/D量化噪声 

分 类 号：TN957.51[电子电信—信号与信息处理]