2、雷达测速仪可安装在巡查车上，在运动中的实现检查车速，是“活动电子警察”非常重要的组成部分。
Principle of radar velocimeter velocity is the use of the Doppler effect, namely mobileobjects have effect on the electromagnetic wave frequency shift of the received radarvelocimeter is obtained, the movement speed of the measured object on the basis ofreflection to receive the wave frequency shift and accounting. Therefore, it has the following characteristics: 1, the radar beam than the laser beam (Ray) shining surface is large, so the radar easy capture policy, without accurate targeting.
2, radar detector can be installed in a patrol car, realize the inspection speed in motion,is "a very important part of the activities of the electronic police".
3、雷达固定测速差错为?1Km/h，运动时测差错为?2Km/h，完全可以满意对交通违章查办的要求。
4、雷达发射的电磁波波束有必定的张角，故有效测速间隔相对于激光测速较近，最远测速间隔为800M(对于大车)。
5、雷达测速仪因技术老练，价格适中。因而，广受欢迎。
6、雷达测速仪发射波束的张角是一个很重要的技术指标。张角越大，测速准确率越易受影响;反之，则影响较小。
3, fixed speed error is plus or minus 1Km/h radar, motion measurement error is 2Km/h, can be completely satisfied with the requirements of traffic violations and.
4, radar electromagnetic wave beam have a certain angle, so the effective velocityinterval relative to the laser velocimeter is close, the farthest velocity interval is 800M(for the cart).
5, radar velocimeter for technical sophistication, moderate price. Therefore, the popular.
6, radar velocimeter transmitted beam angle is an important technical index. The larger the angle, velocity accuracy more easily influenced; on the contrary, have little effect.