调频测距雷达中变频调制器的研究  

Frequency Conversion Modulator and Its Research in Ranging Radar

作　　者：田春燕 高振海[2] 

机构地区：[1]南阳农业学校,河南南阳473000 [2]南阳师范学院物理系,河南南阳473061

出　　处：《南阳师范学院学报》2004年第9期23-25,共3页Journal of Nanyang Normal University

摘　　要：在调频测距雷达研究中 ,对改变调制周期测距方法进行了深入分析 ,设计出了实际电路。采用集成ICL 80 38多种信号发生器作为调频测距雷达中的变频调制器 ,用一个缓慢变化的直流电压控制ICL 80 38的输入电压端 ,使其输出波形为频率连续变化的三角波 ,利用这个频率连续变化的三角波对射频信号进行调制 ,从而实现固定中频 (即缩小了中频放大器的带宽 ,提高了回波信号的信噪比 )In the study of frequency modulation ranging radar, we lucubrate the way of range acquisition by changing modulate cycle and design the practical circuit. An integrated waveform generator (ICL 8038) is used as frequency conversion modulator in ranging radar. We use continuously varied volts do to control the voltage terminal of input, make output waveform its for triangular wave that frequency change in succession, utilize this triangle wave that frequency changes in succession to modulate the radio frequency signal, realize regular intermediate frequency come purpose that find range.

关 键 词：测距雷达 调制周期 三角波 ICL 8038 

分 类 号：TN773[电子电信—电路与系统]