Study on baseline fitting method based on passive infrared range measurement

ZONG Peng-fei; WANG Zhi-bin; ZHANG Ji-long; CHEN Yuan-yuan

doi:10.7510/jgjs.issn.1001-3806.2013.02.009

In order to measure the range accurately and calculate the transmittance precisely with infrared spectrum passive ranging technology,baseline was fitted with interpolation method. Taking oxygen A band as an example, baseline fitting was completed through a variety of interpolation fitting methods making use of both sides of the absorption data from line-by-line radiative transfer model. Meanwhile, detail theoretical analysis and simulation verification were carried out, after comparing several algorithms, the accuracy of polynomial interpolation fitting is the best. The implementation of baseline fitting algorithm provides method for establishing a database of transmittance, distance and other conditions and provides a solid foundation for realization of passive ranging.

Study on baseline fitting method based on passive infrared range measurement

Corresponding author: WANG Zhi-bin, zhibin_wang@126.com;

1. Shanxi Provincial Research Center for Opto-electronic Information and Instrument Engineering Technology, North University of China, Taiyuan 030051, China;

2. Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China

Received Date: 2012-07-24

Accepted Date: 2012-08-20

Available Online: 2013-03-25

Abstract: In order to measure the range accurately and calculate the transmittance precisely with infrared spectrum passive ranging technology,baseline was fitted with interpolation method. Taking oxygen A band as an example, baseline fitting was completed through a variety of interpolation fitting methods making use of both sides of the absorption data from line-by-line radiative transfer model. Meanwhile, detail theoretical analysis and simulation verification were carried out, after comparing several algorithms, the accuracy of polynomial interpolation fitting is the best. The implementation of baseline fitting algorithm provides method for establishing a database of transmittance, distance and other conditions and provides a solid foundation for realization of passive ranging.

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Reference (8)

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Study on baseline fitting method based on passive infrared range measurement

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