IMPROVEMENTOF K-DISTRIBUTION PRECISION FOR CALCULATING THE TRANSMISSION OF SATELLITE REMOTE SENSING CHANNEL

Yin Hong

Vol.16, NO.6, 2005

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Yin Hong. Improvementof K-distribution precision for calculating the transmission of satellite remote sensing channel. J Appl Meteor Sci, 2005, 16(6): 811-819.

Citation:

Yin Hong. Improvementof K-distribution precision for calculating the transmission of satellite remote sensing channel. J Appl Meteor Sci, 2005, 16(6): 811-819.

Yin Hong. Improvementof K-distribution precision for calculating the transmission of satellite remote sensing channel. J Appl Meteor Sci, 2005, 16(6): 811-819.

Citation:

Yin Hong. Improvementof K-distribution precision for calculating the transmission of satellite remote sensing channel. J Appl Meteor Sci, 2005, 16(6): 811-819.

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IMPROVEMENTOF K-DISTRIBUTION PRECISION FOR CALCULATING THE TRANSMISSION OF SATELLITE REMOTE SENSING CHANNEL

Yin Hong

Department of Atmospheric Science, Peking University, Beijing 100871

Received Date: 2004-11-08
Rev Recd Date: 2005-07-12
Publish Date: 2005-12-31

Abstract

Abstract

The absorption band of oxygen at 0.76μm may be used for satellite remote sensing pressure of ocean, earth and cloud surface. The relative variation of pressure is about 10^-3, so the precision of vertical transmission calculated by k-distribution method must be less than 10^-3. According to the increase of computer velocity, the way to increase the precision of vertical transmission calculated by k-distribution method includes: (1) decreasing the simplify calculating processes, (2) when the variation of absorption coefficient is complicated in the channel, increasing the number of sectional points. The extreme number of sectional points is 136, the extreme stand error of vertical transmission calculated by k-distribution method is less than 3×10^-5
- The o xygen channels at 0.76 μm;
- Transmission;
- k-dist ribution method

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References(9)

Figures and Tables

图 1 吸收系数按大小重排的图像

A 线为石广玉计算值^[9]，B 线为本文计算值

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表 1 各高度α_L，α_D ，(Δk/k)_max, Δk 及v的数值

表 2 不同ε入选参加计算吸收系数的波数范围cm^-1

表 3 Hitran 86 与Hitran 2000 线强S 的比较

表 4 不同x, y 条件下，k_L/k_m 的数值

表 5 13022 cm^-1通道不同变换指数r 及截点数N 时的均方差(×10^-8)

表 6 12990 cm^-1通道不同变换指数r 及截点数N 时的均方差(×10^-8)

表 7 12990 cm^-1通道N=20 时不同分界点Q 及变换指数r₁ 与r₂ 的均方差(×10^-8)

References

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