Detection method for the dynamic signal in light screen array based on constant false alarm rate

Ding Chen; Jinping Ni; Lang Bai; Dachuan Chen

doi:10.1117/12.2519526

24 January 2019 Detection method for the dynamic signal in light screen array based on constant false alarm rate

Ding Chen, Jinping Ni, Lang Bai, Dachuan Chen

Proceedings Volume 11052, Third International Conference on Photonics and Optical Engineering; 1105202 (2019) https://doi.org/10.1117/12.2519526
Event: The International Conference on Photonics and Optical Engineering, 2018, Xi'an, China

Abstract

The detection performance of light screen array (LSA) is predominantly affected by sky background noise, and this probably leads to decrease of its effective detection height. This research addresses a method based on constant false alarm rate (CFAR) to solve this problem effectively. The characteristics of the dynamic signal of the LSA are reasonably analyzed, and a Bayesian classification model is scientifically formulated. We construct an adaptive threshold detector using CFAR, thereby extracting the dynamic signal, effectively, under the poor signal to noise ratio (-1 to 5dB). Through semi-physical simulation and live ammunition test, the assessments demonstrate the proposed method can increase the effective detection height of a flying projectile by 20% at least, and its performance is better than previous those.

Citation Download Citation

Ding Chen, Jinping Ni, Lang Bai, and Dachuan Chen "Detection method for the dynamic signal in light screen array based on constant false alarm rate", Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 1105202 (24 January 2019); https://doi.org/10.1117/12.2519526

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