Stellar source selections for image validation of earth observation satellite

Jiwoong Yu, Sang Young Park, Dongwook Lim, Dong Han Lee, Young Jong Sohn

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)273-284
Number of pages12
JournalJournal of Astronomy and Space Sciences
Volume28
Issue number4
DOIs
Publication statusPublished - 2011 Dec

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payloads
stars
remote sensing
astronomical catalogs
orbits
low Earth orbits
radiance
point sources
dynamic range
point source
sky
charge coupled devices
apertures
observation satellite

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "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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Stellar source selections for image validation of earth observation satellite. / Yu, Jiwoong; Park, Sang Young; Lim, Dongwook; Lee, Dong Han; Sohn, Young Jong.

In: Journal of Astronomy and Space Sciences, Vol. 28, No. 4, 12.2011, p. 273-284.

Research output: Contribution to journalArticle

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