Instrumentation, Techniques, and Measurement

Spatial filtering self-velocimeter for vehicle application using a CMOS linear image sensor

[+] Author Affiliations
Xin He, Jian Zhou, Xiaoming Nie, Xingwu Long

National University of Defense Technology, College of Optoelectronic Science and Engineering, Department of Optoelectronic Engineering, No. 109 Deya Road, Kaifu District, Changsha 410073, China

Opt. Eng. 54(3), 034110 (Mar 17, 2015). doi:10.1117/1.OE.54.3.034110
History: Received December 25, 2014; Accepted February 26, 2015
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Abstract.  The idea of using a spatial filtering velocimeter (SFV) to measure the velocity of a vehicle for an inertial navigation system is put forward. The presented SFV is based on a CMOS linear image sensor with a high-speed data rate, large pixel size, and built-in timing generator. These advantages make the image sensor suitable to measure vehicle velocity. The power spectrum of the output signal is obtained by fast Fourier transform and is corrected by a frequency spectrum correction algorithm. This velocimeter was used to measure the velocity of a conveyor belt driven by a rotary table and the measurement uncertainty is 0.54%. Furthermore, it was also installed on a vehicle together with a laser Doppler velocimeter (LDV) to measure self-velocity. The measurement result of the designed SFV is compared with that of the LDV. It is shown that the measurement result of the SFV is coincident with that of the LDV. Therefore, the designed SFV is suitable for a vehicle self-contained inertial navigation system.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Xin He ; Jian Zhou ; Xiaoming Nie and Xingwu Long
"Spatial filtering self-velocimeter for vehicle application using a CMOS linear image sensor", Opt. Eng. 54(3), 034110 (Mar 17, 2015). ; http://dx.doi.org/10.1117/1.OE.54.3.034110


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