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Trend Analysis of Onboard Calibration Data of Terra/ASTER/VNIR and One of the Suspected Causes of Sensitivity Degradation
Kohei Arai, Nagamitsu Ohgi, Fumihiro Sakuma, Masakuni Kikuchi, Satoshi Tsuchida, Hitomi Inada
Pages - 71 - 83     |    Revised - 01-07-2011     |    Published - 05-08-2011
Volume - 2   Issue - 3    |    Publication Date - July / August 2011  Table of Contents
Onboard Calibration, Vicarious Calibration, Plume Impingement
Sensitivity degradation trend is analyzed for ASTER: Advanced Spaceborne Thermal Emission and Reflection radiometer/Visible and Near-Infrared Radiometer: VNIR onboard Terra satellite. Fault Tree Analysis is made for sensitivity degradation. Firstly, it is confirmed that the VNIR detectors are stable enough through dark current and shot noise behavior analysis. Then it is also confirmed that radiance of calibration lamp equipped VNIR is stable enough through lamp monitor of photodiode output data analysis. It is confirmed that radiance at the front of VNIR optics is, on the other hand, degraded in conjunction with sensitivity degradation of VNIR through an analysis of another photodiode output data which is equipped at the front of VNIR optics, photodiode output is scale-off at around one year after the launch though. VNIR optics transparency might not be so degraded due to the fact that VNIR output and the later photodiode output show almost same degradations. Consequently, it may say that one of possible causes of VNIR sensitivity degradation is thruster plume.
CITED BY (5)  
1 Kouyama, T., Yokota, Y., Ishihara, Y., Nakamura, R., Yamamoto, S., & Matsunaga, T. (2016). Development of an application scheme for the SELENE/SP lunar reflectance model for radiometric calibration of hyperspectral and multispectral sensors. Planetary and Space Science, 124, 76-83.
2 Sakuma, F., Kikuchi, M., & Inada, H. (2013, October). Onboard electrical calibration of the ASTER VNIR. In SPIE Remote Sensing (pp. 888903-888903). International Society for Optics and Photonics.
3 Sakuma, F., Kikuchi, M., Inada, H., Akagi, S., & Ono, H. (2012, November).Onboard calibration of the ASTER instrument over twelve years. In SPIE Remote Sensing (pp. 853305-853305). International Society for Optics and Photonics.
4 Sakuma, F., Kikuchi, M., Inada, H., Akagi, S., & Ono, H. (2012, November).Onboard calibration status of the ASTER instrument. In SPIE Asia-Pacific Remote Sensing (pp. 85280W-85280W). International Society for Optics and Photonics.
5 Sakuma, F., Kikuchi, M., Ohgi, N., Inada, H., Akagi, S., & Ono, H. (2011, October). Eleven years of ASTER onboard calibration. In SPIE Remote Sensing (pp. 81760F-81760F). International Society for Optics and Photonics.
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Dr. Kohei Arai
- Japan
Dr. Nagamitsu Ohgi
- Japan
Dr. Fumihiro Sakuma
- Japan
Dr. Masakuni Kikuchi
- Japan
Dr. Satoshi Tsuchida
- Japan
Dr. Hitomi Inada
- Japan