论文部分内容阅读
测速雷达是利用多卜勒原理进行工作的,当无线电波发射源与接收点之间有相对运动时,则接收到的频率与发射频率不相同,其频率之差称为多卜勒频率,该频率与运动物体的速度成正比,即相差频率越高,则速度越大,因此,可用来实现对移动目标的速度测量。小型多卜勒测速雷达主要部件是采用微波半导体器件(耿氏二极管)及一个小型天线(作发射与接收用)等,根据多卜勒原理制成的测速仪器。这种测速雷达发射的无线
Speed radar is the use of Doppler principle of work, when there is relative movement between the radio wave transmission source and the receiving point, then the received frequency and the transmission frequency is not the same, the difference between the frequency is called the Doppler frequency, the The frequency is proportional to the speed of the moving object. That is, the higher the difference frequency is, the greater the speed is. Therefore, the frequency can be used to measure the speed of the moving object. The main components of a small Doppler speed radar is a speed measuring device made of Doppler principle using a microwave semiconductor device (Gunn diode) and a small antenna (for transmitting and receiving). This speed-measuring radar transmits wirelessly