Anisotropic infrared background prediction method

Zhang Qiang; Cai Jingju; Zhang Qiheng

Volume 24 Issue 02

Jun. 2016

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(02): 301-306

wu gang, qiu aici, hei dongwei, et al. TAP curved crystal spectrometer for diagnosing K-shell radiation of aluminum Z-pinch plasma[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

Zhang Qiang, Cai Jingju, Zhang Qiheng. Anisotropic infrared background prediction method[J]. High Power Laser and Particle Beams, 2012, 24: 301-306.

wu gang, qiu aici, hei dongwei, et al. TAP curved crystal spectrometer for diagnosing K-shell radiation of aluminum Z-pinch plasma[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

Zhang Qiang, Cai Jingju, Zhang Qiheng. Anisotropic infrared background prediction method[J]. High Power Laser and Particle Beams, 2012, 24: 301-306.

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Anisotropic infrared background prediction method

1.
Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China

Received Date: 2011-07-07
Rev Recd Date: 2011-11-08
Publish Date: 2012-02-15

Abstract

Abstract

For reducing the effect of undulate background in dim infrared targets detection, an anisotropic method is presented for infrared background prediction. According to differences of local gradient character among target region, smooth background region and undulate background region, the edge stopping function of anisotropic partial differential equations is improved to an increasing function with the value of the direction grads. Then the mean of the two least values of the edge stopping function is derived as the prediction value of the background. Simulation results show that the method selectively retains the smooth background region and the undulate background region, and achieves good prediction of background.
- isotropy,
- grads operator,
- anisotropic partial differential equations,
- edge stopping function

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