Ms. Hitomi Inada Profile

Hitomi Inada

at NEC Corp

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Author

Publications (15)

Proceedings Article | 30 October 2015 Paper

ASTER VNIR 15 years growth to the standard imaging radiometer in remote sensing

Masaru Hiramatsu, Hitomi Inada, Masakuni Kikuchi, Fumihiro Sakuma

Proceedings Volume 9639, 96390C (2015) https://doi.org/10.1117/12.2193080

KEYWORDS: Remote sensing, Calibration, Radiometry, Spatial resolution, Space operations, Near infrared, Space telescopes, Telescopes, Systems modeling, Floods

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Proceedings Article | 12 October 2015 Paper

ASTER system operating achievement for 15 years on orbit

Hitomi Inada, Yoshiyuki Ito, Masakuni Kikuchi, Fumihiro Sakuma, Kenji Tatsumi, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 9639, 96391Z (2015) https://doi.org/10.1117/12.2193852

KEYWORDS: Short wave infrared radiation, Radiometry, Thermography, Signal processing, Infrared radiation, Calibration, Sensors, Space operations, Visible radiation, Near infrared

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Proceedings Article | 12 October 2015 Paper

ASTER 15 years challenging trail on-orbit operation

Masakuni Kikuchi, Fumihiro Sakuma, Kenji Tatsumi, Hitomi Inada, Yoshiyuki Itou, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 9639, 96391X (2015) https://doi.org/10.1117/12.2186268

KEYWORDS: Short wave infrared radiation, Sensors, Calibration, Space operations, Infrared radiation, Factor analysis, Safety, Radiometry, Thermography, Silicon

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Proceedings Article | 16 October 2013 Paper

Onboard electrical calibration of the ASTER VNIR

Fumihiro Sakuma, Masakuni Kikuchi, Hitomi Inada

Proceedings Volume 8889, 888903 (2013) https://doi.org/10.1117/12.2028832

KEYWORDS: Calibration, Amplifiers, Short wave infrared radiation, Charge-coupled devices, Radiometry, Lamps, Optical calibration, Sensors, Image quality, Satellites

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The Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) is one of the five sensors on the NASA’s Terra satellite on orbit since December 1999. ASTER consists of three radiometers, the Visible and Near InfraRed (VNIR), the Short-Wave InfraRed (SWIR) and Thermal InfraRed (TIR) whose spatial resolutions are 15 m, 30 m and 90 m, respectively. Unfortunately the SWIR image data are saturated since April 2008 due to the offset rise caused by the cooler temperature rise, but the VNIR and the TIR are taking Earth images of good quality. The VNIR and the TIR experienced responsivity degradation while the SWIR showed little change. From the lamp calibration, Band 1 decreased the most among three VNIR bands and 31% in thirteen years. The VNIR has the electrical calibration mode to check the healthiness of the electrical circuits through the charge coupled device (CCD). Four voltage levels from Line 1 to Line 4, which are from 2.78 V to 3.10 V, are input to the CCD in the onboard calibration sequence and the output digital numbers (DNs) are detected in the images. These input voltages are monitored as telemetry data and have been stable up to now. From the electrical calibration we can check stabilities of the offset, gain ratio and gain stability of the electric circuit. The output level of the Line1 input is close to the offset level which is measured while observing the earth at night. The trend of the Line 1 output is compared to the offset level. They are similar but are not exactly the same. The trend of the even pixel and odd pixel is the same so the saturated offset levels of the odd pixel is corrected by using the even pixel trend. The gain ratio trend shows that the ratio is stable. But the ratio values are different from those measured before launch. The difference comes up to 10% for the Band 2. The correct gain ratio should be applied to the vicarious calibration result because the onboard calibration is measured with the Normal gain whereas the vicarious calibration often measures with the High gain. The cause of the VNIR responsivity degradation is not known but one of the causes might be the change of the electric circuit. The band 3 gain shows 16 % decrease whereas the gain changes of the band 1 and band 2 are 5% to 8%. The responsivity decrease after 1000 days since launch might be controlled by the electric circuit change.

Proceedings Article | 19 November 2012 Paper

Effect of temperature on onboard calibration reference material for spectral response function retrieval of the hyperspectral sensor of HISUI-SWIR spectral case

Kenji Tatsumi, Jun Tanii, Hisashi Harada, Toneo Kawanishi, Fumihiro Sakuma, Hitomi Inada, Takahiro Kawashima, Akira Iwasaki

Proceedings Volume 8533, 85330C (2012) https://doi.org/10.1117/12.970262

KEYWORDS: Sensors, Short wave infrared radiation, Signal to noise ratio, Calibration, Absorption, Optical filters, Filtering (signal processing), Linear filtering, Temperature metrology, Spectral calibration

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Proceedings Article | 19 November 2012 Paper

Onboard calibration of the ASTER instrument over twelve years

Fumihiro Sakuma, Masakuni Kikuchi, Hitomi Inada, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 8533, 853305 (2012) https://doi.org/10.1117/12.970619

KEYWORDS: Calibration, Lamps, Short wave infrared radiation, Black bodies, Silicon, Satellites, Sensors, Data acquisition, Infrared radiation, Plasma

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Proceedings Article | 9 November 2012 Paper

The instrument development status of hyper-spectral imager suite (HISUI)

Yoshiyuki Itoh, Takahiro Kawashima, Hitomi Inada, Jun Tanii, Akira Iwasaki

Proceedings Volume 8528, 852813 (2012) https://doi.org/10.1117/12.977334

KEYWORDS: Short wave infrared radiation, Sensors, Radiometry, Signal to noise ratio, Spectral calibration, Signal processing, Performance modeling, Spectrographs, Calibration, Signal detection

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Proceedings Article | 9 November 2012 Paper

Onboard calibration status of the ASTER instrument

Fumihiro Sakuma, Masakuni Kikuchi, Hitomi Inada, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 8528, 85280W (2012) https://doi.org/10.1117/12.976012

KEYWORDS: Calibration, Lamps, Short wave infrared radiation, Sensors, Black bodies, Silicon, Satellites, Data acquisition, Radiometry, Spatial resolution

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Proceedings Article | 9 November 2012 Paper

Development of onboard fast lossless compressors for multi and hyperspectral sensors

Tetsuhiro Nambu, Jun Takada, Takahiro Kawashima, Hiroki Hihara, Hitomi Inada, Makoto Suzuki, Taeko Seki, Satoshi Ichikawa

Proceedings Volume 8527, 85270W (2012) https://doi.org/10.1117/12.979823

KEYWORDS: Sensors, Image compression, Short wave infrared radiation, Radiometry, Image resolution, Satellites, Data modeling, Performance modeling, Data acquisition, Computed tomography

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Proceedings Article | 3 October 2011 Paper

Retrieval of spectral response functions for the hyperspectral sensor of HISUI (Hyperspectral Imager SUIte) by means of onboard calibration sources

Kenji Tatsumi, Nagamitsu Ohgi, Hisashi Harada, Toneo Kawanishi, Fumihiro Sakuma, Hitomi Inada, Takahiro Kawashima, Akira Iwasaki

Proceedings Volume 8176, 81760S (2011) https://doi.org/10.1117/12.897218

KEYWORDS: Sensors, Spectral calibration, Calibration, Short wave infrared radiation, Signal to noise ratio, Absorption, Error analysis, Spectroscopy, Image sensors, Satellites

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Proceedings Article | 3 October 2011 Paper

Eleven years of ASTER onboard calibration

Fumihiro Sakuma, Masakuni Kikuchi, Nagamitsu Ohgi, Hitomi Inada, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 8176, 81760F (2011) https://doi.org/10.1117/12.897744

KEYWORDS: Calibration, Lamps, Sensors, MODIS, Satellites, Optical coherence tomography, Short wave infrared radiation, Silicon, Absorption, Black bodies

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Proceedings Article | 13 November 2010 Paper

The functional evaluation model for the on-board hyperspectral radiometer

Takahiro Kawashima, Yoshito Narimatsu, Hitomi Inada, Juro Ishida, Kazuo Hamada, Yoshiyuki Ito, Jun Yoshida, Nagamitsu Ohgi, Kenji Tatsumi, Hisashi Harada, Toneo Kawanishi, Fumihiro Sakuma, Akira Iwasaki

Proceedings Volume 7857, 78570M (2010) https://doi.org/10.1117/12.870853

KEYWORDS: Sensors, Short wave infrared radiation, Spectrographs, Signal to noise ratio, Radiometry, Signal processing, Spectral calibration, Signal detection, Telescopes, Spectral resolution

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Proceedings Article | 14 October 2010 Paper

Onboard spectral calibration for the Japanese hyper-spectral sensor

Kenji Tatsumi, Nagamitsu Ohgi, Hisashi Harada, Toneo Kawanishi, Fumihiro Sakuma, Yoshito Narimatsu, Hitomi Inada, Takahiro Kawashima, Akira Iwasaki

Proceedings Volume 7826, 782625 (2010) https://doi.org/10.1117/12.866054

KEYWORDS: Sensors, Short wave infrared radiation, Calibration, Absorption, Signal to noise ratio, Optical filters, Spectral resolution, Lamps, Spectral calibration, Satellites

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Proceedings Article | 9 October 2008 Paper

ASTER on-board calibration status

Fumihiro Sakuma, Takashi Sato, Hitomi Inada, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 7106, 71060G (2008) https://doi.org/10.1117/12.800127

KEYWORDS: Calibration, Short wave infrared radiation, Sensors, Lamps, Black bodies, Photodiodes, Charge-coupled devices, Radiometry, Temperature metrology, Satellites

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Proceedings Article | 3 October 2006 Paper

Onboard calibration status of ASTER

Fumihiro Sakuma, Takashi Sato, Hitomi Inada, Shigeki Akagi, Hidehiko Ono

Proceedings Volume 6361, 63610W (2006) https://doi.org/10.1117/12.687750

KEYWORDS: Calibration, Short wave infrared radiation, Sensors, Lamps, Black bodies, Charge-coupled devices, Photodiodes, Radiometry, Temperature metrology, Satellites

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Showing 5 of 15 publications

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