An alternative approach to the channel selection problem for the infrared multichannel spectral data using hypothetical channel system

Tadao Aoki

doi:10.1117/12.577962

5 January 2005 An alternative approach to the channel selection problem for the infrared multichannel spectral data using hypothetical channel system

Tadao Aoki

Author Affiliations +

Proceedings Volume 5658, Applications with Weather Satellites II; (2005) https://doi.org/10.1117/12.577962
Event: Fourth International Asia-Pacific Environmental Remote Sensing Symposium 2004: Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2004, Honolulu, Hawai'i, United States

Abstract

A method has recently been shown by Aoki to compress the number of channels of vertical atmospheric sounder preserving almost all the information content that the original data has. In this method the weighting function of the original channels is decomposed with empirical orthogonal functions (EOFs) and a system of hypothetical radiances, whose weighting functions are the EOFs, are constructed and used for the analysis. It has been shown that the radiance data of 1200 of original channels, which is obtained from the region 640-760 cm^-1, can be compressed to 23 or less channels of hypothetical radiances with loosing negligible information content. In the present paper, the studies were performed on the a) the relation between the number of the EOFs that is required to reconstruct the weighting functions in sufficient accuracy and the spectral resolution, b) the dependence of the correlation between "measurement error" of hypothetical channels on the range of zenith angle of sample data of weighting function, from which the EOFs are generated, and c) the dependence of the information content on the spectral resolutions 0.1, 0.35 and 0.6 cm^-1.

Citation Download Citation

Tadao Aoki "An alternative approach to the channel selection problem for the infrared multichannel spectral data using hypothetical channel system", Proc. SPIE 5658, Applications with Weather Satellites II, (5 January 2005); https://doi.org/10.1117/12.577962

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available