High accuracy alignment facility for the receiver and transmitter of laser altimeter

Guojun Du; Xin Dong; Shengbo Mu; Chunhun Wang; Cong Wang; Zongyao Ou

doi:10.1117/12.2505155

12 December 2018 High accuracy alignment facility for the receiver and transmitter of laser altimeter

Guojun Du, Xin Dong, Shengbo Mu, Chunhun Wang, Cong Wang, Zongyao Ou

Proceedings Volume 10846, Optical Sensing and Imaging Technologies and Applications; 108461Q (2018) https://doi.org/10.1117/12.2505155
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

The laser altimeter include active transmitter and passive receiver with single pixel detector, the accurate co-alignment of the transmitter to receiver is a challenging task. A facility for axis measurement of transmitter and receiver had to be developed base on pentaprism and two dimensional scanning mechanism．Divide the optical beam before collimator focal plane into two conjugate paths with a pentaprism, one path is for measuring the optical axis of transmitter with beam analyzer. Another path is built with an infrared illuminated aperture stop, scan the two dimensional mechanism under the aperture stop, get the boresight of the receiver by analyzing relationship both detector energy and translation. Error Analysis show that the measurement accuracy of co-alignment of the transmitter to receiver is better than 5″, Prove that the current facility is enough for the alignment of the laser altimeter.

Citation Download Citation

Guojun Du, Xin Dong, Shengbo Mu, Chunhun Wang, Cong Wang, and Zongyao Ou "High accuracy alignment facility for the receiver and transmitter of laser altimeter", Proc. SPIE 10846, Optical Sensing and Imaging Technologies and Applications, 108461Q (12 December 2018); https://doi.org/10.1117/12.2505155

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