On-orbit spectral calibration method for imaging spectrometer using atmospheric O2 absorption peak and Pr-Nd glass characteristic spectra

Hongbo Wang; Xiaoxian Huang; Liang Ma; Xiao Zhang; Tengfei Zhang; Jun Wei

doi:10.1117/12.2074190

10 December 2014 On-orbit spectral calibration method for imaging spectrometer using atmospheric O₂absorption peak and Pr-Nd glass characteristic spectra

Hongbo Wang, Xiaoxian Huang, Liang Ma, Xiao Zhang, Tengfei Zhang, Jun Wei

Author Affiliations +

Proceedings Volume 9261, Ocean Remote Sensing and Monitoring from Space; 92611O (2014) https://doi.org/10.1117/12.2074190
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

Space-borne imaging spectrometer can be used for ocean color remote sensing and coastal zones monitoring. To meet the demand of quantitative remote sensing inversion, the imaging spectrometer needs precisely spectral calibrated before launching. However, due to the changes of space environment and degradation of the instrument performance, maybe the central wavelength or spectral width of each channel in the spectrometer varies after launching. Thus, on-orbit spectral characteristics check even recalibration for the instrument is necessary. The imaging spectrometer is capable of channel programmable and the spectral width of every pixel line of the array CCD is 2.5nm. In the field imaging experiments, the instrument showed an atmospheric O2 absorption peak near 765 nm. This characteristic peak coordinating with Pr-Nd glass, which belongs to the on-board calibration mechanism, can be used for on-orbit spectral calibration. Also, it can be used independently to calibrate the central wavelength of each channel during the earth observation. Empirical research shows that this method is not only simple and applicable but also can achieve precision of 1.25 nm and meet the practical requirements.

Citation Download Citation

Hongbo Wang, Xiaoxian Huang, Liang Ma, Xiao Zhang, Tengfei Zhang, and Jun Wei "On-orbit spectral calibration method for imaging spectrometer using atmospheric O₂absorption peak and Pr-Nd glass characteristic spectra", Proc. SPIE 9261, Ocean Remote Sensing and Monitoring from Space, 92611O (10 December 2014); https://doi.org/10.1117/12.2074190

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Spectroscopy

Spectral calibration

Absorption

Calibration

Glasses

Oxygen

Diffusers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years