Laser & Optoelectronics Progress, Volume. 50, Issue 7, 71404(2013)
Triple-Beam Laser Doppler Velocimeter Based on Janus Configuration
In order to measure the longitudinal and lateral speeds of a vehicle simultaneously, a triple-beam laser Doppler velocimeter (TLDV) system based on Janus configuration is presented. The model and the expression of speed measurement are given. According to the analysis and simulation, some results can be obtained as follows: firstly, TLDV is less sensitive to bump and shake; secondly, the relative speed measurement error is affected only by the bump angle and has no relationship with the shake angle; thirdly, the relative error is lower than 0.3% when the bump angle is 10° and the velocity is 0.2 m/s. Last of all, a kind of optimal configuration of TLDV beams is given.
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Wu Zhanjun, Han Fengshan, Fan Zhe, Lin Zhili. Triple-Beam Laser Doppler Velocimeter Based on Janus Configuration[J]. Laser & Optoelectronics Progress, 2013, 50(7): 71404
Category: Lasers and Laser Optics
Received: Apr. 2, 2013
Accepted: --
Published Online: Jul. 1, 2013
The Author Email: Zhanjun Wu (for_wzj@yahoo.com.cn)