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

Xin He; Jian Zhou; Xiaoming Nie; Xingwu Long

doi:10.1117/1.OE.54.3.034110

17 March 2015 Spatial filtering self-velocimeter for vehicle application using a CMOS linear image sensor

Xin He, Jian Zhou, Xiaoming Nie, Xingwu Long

Author Affiliations +

Optical Engineering, Vol. 54, Issue 3, 034110 (March 2015). https://doi.org/10.1117/1.OE.54.3.034110

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.

Citation Download Citation

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

Published: 17 March 2015

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