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Sensors 2018, 18(2), 619; https://doi.org/10.3390/s18020619

HPT: A High Spatial Resolution Multispectral Sensor for Microsatellite Remote Sensing

1
Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan
2
Department of Aerospace Engineering, Tohoku University, Aramaki Aza Aoba 6-6-11, Sendai 980-8579, Japan
*
Author to whom correspondence should be addressed.
Received: 19 January 2018 / Revised: 10 February 2018 / Accepted: 15 February 2018 / Published: 18 February 2018
(This article belongs to the Special Issue Multispectral and Hyperspectral Instrumentation)
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Abstract

Although nano/microsatellites have great potential as remote sensing platforms, the spatial and spectral resolutions of an optical payload instrument are limited. In this study, a high spatial resolution multispectral sensor, the High-Precision Telescope (HPT), was developed for the RISING-2 microsatellite. The HPT has four image sensors: three in the visible region of the spectrum used for the composition of true color images, and a fourth in the near-infrared region, which employs liquid crystal tunable filter (LCTF) technology for wavelength scanning. Band-to-band image registration methods have also been developed for the HPT and implemented in the image processing procedure. The processed images were compared with other satellite images, and proven to be useful in various remote sensing applications. Thus, LCTF technology can be considered an innovative tool that is suitable for future multi/hyperspectral remote sensing by nano/microsatellites. View Full-Text
Keywords: multispectral sensor; tunable filter; microsatellite; Earth observation; image analysis multispectral sensor; tunable filter; microsatellite; Earth observation; image analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Kurihara, J.; Takahashi, Y.; Sakamoto, Y.; Kuwahara, T.; Yoshida, K. HPT: A High Spatial Resolution Multispectral Sensor for Microsatellite Remote Sensing. Sensors 2018, 18, 619.

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