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An adaptive microwave velocity measuring device and method thereof

A speed measuring device and self-adaptive technology, which is applied in the direction of measuring device, radio wave measurement system, and radio wave reflection/re-radiation, etc. It can solve the problems of mobile speed measurement failure, insufficient speed measurement accuracy, and inability to provide its own speed. Convenience, low power consumption and high reliability

Active Publication Date: 2015-11-18
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The traditional mobile speed measurement method is relatively simple to implement, but there are the following problems: 1) the speed measurement accuracy is not high enough, especially the third method, basically can only approximate the target speed; 2) GPS equipment cannot find satellites in tunnels and other places. Unable to provide accurate self-speed, which makes mobile speed measurement invalid in some occasions; 3) In order to use the speedometer data of the radar carrier aircraft, it is necessary for the radar carrier aircraft to provide corresponding interfaces, which puts forward very high requirements for users

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  • An adaptive microwave velocity measuring device and method thereof
  • An adaptive microwave velocity measuring device and method thereof
  • An adaptive microwave velocity measuring device and method thereof

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments of traffic speed measurement and with reference to the accompanying drawings.

[0057] In traffic speed measurement, in order to facilitate fixed speed measurement and mobile speed measurement, the speed measurement radar is generally installed on the front windshield of the vehicle, and the radar beam points to the left front or right front. If the radar carrier (the vehicle on which the radar is installed) is stationary, it is a fixed speed measurement; if the radar carrier moves, it is a mobile speed measurement.

[0058] In the case of fixed speed measurement, the target (referring to other vehicles driving on the road) generally moves away from the radar carrier, resulting in a negative Doppler frequency. At this time, the speed of the target is measured.

[0059] Du...

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Abstract

The invention discloses an adaptive microwave speed measurement device and a method thereof. The device comprises a radar electronic unit and a data acquiring and processing unit, wherein the radar electronic unit is used for generating and radiating a fixed-frequency radar radio frequency signal, de-chirping and receiving a target echo signal and outputting the target echo signal, and the data acquiring and processing unit is used for acquiring and processing the target echo signal output by the radar electronic unit to obtain the absolute movement speed of a target. The adaptive microwave speed measurement device provided by the invention enables a speed measurement radar to adaptively measure the absolute movement speed of a target without outside intervention in a static or mobile situation and has the characteristics of small size, light weight and easy use.

Description

technical field [0001] The invention relates to the field of radar velocity measurement, in particular to an adaptive microwave velocity measurement device and a method thereof. Background technique [0002] The basic principle of microwave speed measurement is generally to use the Doppler frequency proportional to the radial velocity generated between two relative moving targets to measure speed. Microwave velocimeters generally use continuous wave signals as transmitting signals. Suppose the frequency of the transmitted signal is f c , the wavelength of the corresponding signal is: [0003] λ = c f c ; [0004] The target radial velocity is v, and the Doppler frequency resulting from the relative motion between the targets is: [0005] f d = 2 v λ ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/58
CPCG01S7/032G01S13/583
Inventor 李和平王岩飞吴海挺张建龙
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI