source:Industry News release time:2022-11-18 Hits: Popular:realtime gps tracker online
First, let's talk about the principle of radar velocity measurement. The radar velocimeter is based on the calculation of the frequency shift from * * to the reflected wave to obtain the moving speed of the object. The radar beam has a large illuminating area, so the radar velocity measurement is easy to capture the target without accurate aiming. The radar equipment can be fixed on the road or installed on patrol vehicles. It can detect the speed in motion, which is an important part of the "mobile electronic police". Secondly, the error of radar fixed speed measurement is ± 1Km/h, and the error of moving time measurement is ± 2Km/h, which fully meets the requirements of traffic violations investigation. The international use of radar speed measurement has a history of more than 20 years, and the technology is mature. From the current situation, Backward speed measurement is the main method on the road nationwide, but there are also a few forward speed detectors. Most of them are positive speed measuring devices on expressways. The back direction means that the direction of the radar wave and camera is the same as that of the car. When the car exceeds the speed limit, the camera captures the rear license plate of the car. The forward direction means that the direction of the radar wave and camera is opposite to that of the car. When the car exceeds the speed limit, the camera captures the front license plate of the car. The principle of the radar detector is very simple, that is, when the radar signal is received, it will alarm the car owner to slow down.
Most of the radar detectors are imported, and the price is generally between 800 yuan and 5000 yuan. The performance level is also very different. The most different is that the frequency bands of the radar waves that can be sensed are different, because the radar speed measuring equipment for roads in different cities in China are produced in different countries and our own countries, and the frequency of the radar waves used is different. Some of the same cities have three or four radar speed measuring devices with different frequency bands, low-end radar detectors, Usually, only one band of radar waves can be sensed, while high-end radar detectors can sense multiple radar waves of different bands, even with light sensors, and can also prevent laser speed detectors.
In addition, the distance of sensing also reflects the performance of the radar detector. If the sensing distance is too close, the car owner has been photographed before he can slow down; If the deceleration is too fast, it is also easy to cause a rear end collision. The high-end radar detector can sense the radar wave for about one kilometer in the positive direction, while the poor one can only sense it at about 200 meters.
Read recommendations:
pet gps tracker cat Manufacturing
pet gps tracker cat wholesaler
What is the general installation of a car GPS locator?obd2 gps tracker verizon manufacturer
What are the key points for purchasing in car GPS.personal gps tracker Solution
Last article:Why do you still use the GPS of the United States?
Related Information
GPS Tracking price
2023-04-11Car gps tracking Manufacturing
2023-04-23Magnetic gps tracker price
2023-04-23trailer gps tracker Factory
2023-04-23SecumoreGPS
2023-03-16car gps tracker Factory
2023-04-234G GPS Tracker custom
2023-04-23fleet gps tracking company
2023-04-23car gps tracker manufacture
2023-04-23Magnetic gps tracker Vendor
2023-04-23G09L -6 inch Tail light tracker
2022-06-20G900LM-4G Car GPS Tracker
2025-03-25VSL100 GPS Speed Limiter, Speed Governor
2022-06-19TK103B
2022-06-20C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
2022-06-21Car GPS purchase common sense.gps tracker for kids Manufacturing
2023-05-19GPS development mode
2022-11-19Do you know the working principle of the pet GPS positioner?realtime gps tracker online wholesaler
2023-03-10GPS positioning principle
2022-10-14GPS Plan implementation plan
2022-10-12Main features of gps tracker
2022-09-19GPS design idea and scheme
2022-11-18Global Navigation Satellite System
2022-11-04GPS signal jammer shield
2023-11-01GPS development mode
2022-11-19The Application of GPS in Passenger Vehicle Management.obd-II port gps tracker manufacturer
2023-08-26Gps speed limiter.Why do operating vehicles need to install a Beidou satellite positioning and drivi
2023-10-26Introduction and Comparison of GPS PPS Technology and Other Clock Synchronization Technologies
2022-11-11What are the GPS signals
2022-09-22The significance of GPS positioning technology in the construction machinery industry.GPS Rastreader
2023-03-16