Infrared dim target track initiation method based on likelihood ratio test

Li Zhengzhou; Zhang Yuehua; Zheng Wei; Tian Lei; Jin Gang

Volume 24 Issue 01

Jun. 2016

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(01): 76-78

cao bai ling, wu cheng jiu, rao rui zhong, et al. Atmospheric attenuation of the HF and DF laser radiation[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

Li Zhengzhou, Zhang Yuehua, Zheng Wei, et al. Infrared dim target track initiation method based on likelihood ratio test[J]. High Power Laser and Particle Beams, 2012, 24: 76-78.

cao bai ling, wu cheng jiu, rao rui zhong, et al. Atmospheric attenuation of the HF and DF laser radiation[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

Li Zhengzhou, Zhang Yuehua, Zheng Wei, et al. Infrared dim target track initiation method based on likelihood ratio test[J]. High Power Laser and Particle Beams, 2012, 24: 76-78.

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Infrared dim target track initiation method based on likelihood ratio test

1.
College of Communication Engineering,Chongqing University,Chongqing 400044,China;
2.
China Aerodynamics Research and Development Center,Mianyang 621000,China;
3.
Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China

Publish Date: 2012-01-15

Abstract

Abstract

An approach based on sequential likelihood ratio test is presented to rapidly initiate track for dim moving target using the target amplitude acquired by the infrared tracking system. The two-dimensional dynamic assignment algorithm is adopted firstly to associate measurement with track, and the sequential likelihood ratio test is then taken to evaluate the quality of track. The target track is confirmed immediately once the likelihood ratio is greater than the threshold. This approach can take different scans to initiate target track according to the signal-to-noise ratio(SNR) of target, and the bigger the SNR of target is, the less frame it needs to achieve a given track detection probability. Some experiments are included and the results show that this approach can improve the speed of track initiation and enhance the detection probability of target track, without the limitation of the M/N logical method that the number of scans must be fixed to initiate target track with different SNRs.
- infrared dim moving target,
- track initiation,
- likelihood ratio test,
- signal-to-noise ratio

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