1 Oscillators 1 .................................................... 1.1 Introduction 1 .................................................. 1.2 The principles of oscillation 2 .......................... 1.3 The basic structure and requirements of an
ContentsForeword xvAcknowledgments xix1 Introduction to Communications Circuits 11.1 Introduction 11.2 Lower Frequency Analog Design and MicrowaveDesign Versus Radio Frequency IntegratedCircuit Design 21.2.1 Impedance Levels for Microwave and Low-Fr
提出了一种基于光纤链路传输的远程超宽带混沌成像雷达系统。该系统包括中心站、光纤传输链路和基站。在中心站，改进型Colpitts振荡器产生超宽带混沌信号，经上变频后作为雷达探测信号。探测信号通过激光器的外调制技术转换为相应的光信号，经光纤链路传输到基站并转换为相应电信号，由宽带天线发射。目标物反射的回波信号经电光转换和下变频在中心站被采集。利用相关运算和后向投影算法，中心站可实现对目标物的二维空间成像。实验结果表明，该系统经过10 km 光纤传输后可对单个和多个目标物进行远程成像。成像的距离分辨率
