Multiwavelength imaging photometer for the topside observation of gravity waves

Stephen B. Mende; Gary R. Swenson; James H. Hecht

doi:10.1117/12.187582

30 September 1994 Multiwavelength imaging photometer for the topside observation of gravity waves

Stephen B. Mende, Gary R. Swenson, James H. Hecht

Proceedings Volume 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research; (1994) https://doi.org/10.1117/12.187582
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

An imaging instrument is being developed for the NASA thermosphere ionosphere mesosphere energetics and dynamics (TIMED) mission. This instrument images the small, few km scale structure of the earth airglow. The measurement permits the remote sensing of the temperature and intensity fluctuations produced by atmospheric gravity waves propagating through the mesopause region. Instrument modules look in the nadir direction to observe the fine structure of the airglow. Other modules look at the limb in the satellite orbit plane to monitor the limb latitude profiles. The measurement is performed by observing the rotational temperature of the O₂(0,0) band at 762 nm in nadir and limb. The waves also modulate the airglow intensity and the instrument will record the modulations of the O₂(0,0), O₂(0,1) and OH emissions in the nadir. The nadir channels of the instrument use a wide angle telecentric imager in which the distortion of the image is closely controlled so that the motion of the satellite can be compensated during the extended integration time by time delayed integration (TDI) mode of scanning of the CCD. The TDI method requires the CCD pixel columns to be aligned parallel with the orbital velocity vector and the shifting of the rows to be synchronized with the satellite motion. Through TDI scanning the imager can stare at a target at atmospheric altitude for an extended exposure duration. Each telecentric instrument module contains a single filter, and adjacent wavelength bands are imaged simultaneously by passing the light through the filter at different angles. The limb imagers use CCDs in the frame transfer mode.

Citation Download Citation

Stephen B. Mende, Gary R. Swenson, and James H. Hecht "Multiwavelength imaging photometer for the topside observation of gravity waves", Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); https://doi.org/10.1117/12.187582

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
17 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Charge-coupled devices

Signal to noise ratio

Temperature metrology

Imaging systems

Airglow

Modulation

CCD cameras

Show All Keywords

Keywords/Phrases

Search In:

Publication Years