Long-range active laser detection system based on cat’s eye effect

Chengmin Lei; Feng Zhou; Tao Chen; He Chen; Yaoyao Ma

doi:10.1117/12.2622289

27 March 2022 Long-range active laser detection system based on cat’s eye effect

Chengmin Lei, Feng Zhou, Tao Chen, He Chen, Yaoyao Ma

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121691O (2022) https://doi.org/10.1117/12.2622289
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

In order to enhance the detection capability of “cat’s eye” effect existing in the photoelectronic equipment at long-range, we develop a laser active detection system in this paper. The parameters of laser transmitter and imaging system are well-designed based on the requirement of long-range active detection. The laser light is produced by a high energy pulsed laser at 532 nm, assembled with a beam expander which can achieve a tunable laser divergence angle from 0.03° to 5°, and the reflected light can be detected by a CMOS assembled with an long-focal-length optical lens. An experimental demonstration system is build up according to the system design, which can successfully detect a camera (Aperture-50 mm) at a detection range of 5.7 km, with no extra sophisticated signal processing schemes required. An evident “cat’s eye” target can be observed in the raw image from the digital camera (exposure time-3 ms) when the laser divergence angle is 3°, whose intensity is more than 3 times of the background. The results indicate that this work meets the demand of long-range laser active detection based on the “cat’s eye” effect.

Citation Download Citation

Chengmin Lei, Feng Zhou, Tao Chen, He Chen, and Yaoyao Ma "Long-range active laser detection system based on cat’s eye effect", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121691O (27 March 2022); https://doi.org/10.1117/12.2622289

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