Dynamic speed measurement method of vehicle-mounted radar

A vehicle-mounted radar and dynamic technology, which is applied in the field of traffic monitoring, can solve problems such as the inability to measure the speed of vehicles, the inability to measure the speed of vehicles, and the narrowing of the control range of traffic control departments, so as to achieve the effect of improving the control range
CN109239701APending Publication Date: 2019-01-18ANHUI VOCATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI VOCATION TECH CO LTD
Publication Date
2019-01-18

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Abstract

The invention discloses a dynamic speed measurement method of a vehicle-mounted radar. The dynamic speed measurement method comprises the following steps of installing the radar on a cloud deck outside a measurement vehicle which is moving; allowing a radar wave emission direction to point to a side front part of the measurement vehicle, receiving a reflection wave of a background object which isfixed at the side front part of the measurement vehicle by the radar in real time to obtain a travelling speed V1 of the measurement vehicle; and obtaining that a moving direction of a target vehicleis same as a moving direction of a test vehicle when the target vehicle enters a measurement range from a radar wave outer boundary, calculating a speed V2 by analyzing frequency deviation of the obtained reflection wave according to a Doppler radar formula, and obtaining an actual travelling speed V=V1+V2 of the target vehicle. By the dynamic speed measurement method, the speed of the target vehicle on a road can be accurately obtained on the premise that the actual travelling speed of the measurement vehicle is enabled to be accurately obtained, the travelling direction of the target vehicleis accurately judged, and the control range of traffic control department is substantially expanded.
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Description

technical field

[0001] The invention relates to the technical field of traffic monitoring, in particular to a dynamic speed measurement method for a vehicle-mounted radar speedometer. Background technique

[0002] The traffic control department has radar speedometers on rural roads, urban roads and expressways to monitor the speed of vehicles and take pictures of illegal vehicles to obtain evidence. , the frequency of the received signal will change. By analyzing the obtained frequency offset, the actual speed of the vehicle can be accurately calculated according to the Doppler radar formula. The radar speedometer with a determined position can be used to measure the vehicle's the relative velocity of the ground.

[0003] Since the speed measuring radar cannot cover all the roads, the speed measuring radar can only be deployed at intersections or important road sections. Speed ​​measurement, so the control scope of the traffic control department will be greatly reduced. ...

Claims

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