Stellar Source Selections for Image Validation of Earth Observation Satellite

Details Stellar Source Selections for Image Validation of Earth Observation Satellite Stellar Source Selections for Image Validation of Earth Observation Satellite

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jass...28..273y&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 28, no. 4, 273-284

Astronomy and Astrophysics

Astronomy

Image Validation, Time Delayed And Integration, Star Observation, Satellite Optical Payload

Scientific paper

A method of stellar source selection for validating the quality of image is investigated for a low Earth orbit optical remote sensing satellite. Image performance of the optical payload needs to be validated after its launch into orbit. The stellar sources are ideal source points that can be used to validate the quality of optical images. For the image validation, stellar sources should be the brightest as possible in the charge-coupled device dynamic range. The time delayed and integration technique, which is used to observe the ground, is also performed to observe the selected stars. The relations between the incident radiance at aperture and V magnitude of a star are established using Gunn & Stryker's star catalogue of spectrum. Applying this result, an appropriate image performance index is determined, and suitable stars and areas of the sky scene are selected for the optical payload on a remote sensing satellite to observe. The result of this research can be utilized to validate the quality of optical payload of a satellite in orbit.

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