India's hyperspectral remote sensing (RS) journey started with development and flight testing of Aircraft Imaging Spectrometer (AIMS) with 143 bands in visible and near infrared (VNIR) spectrum in 1996. Subsequently, a compact hyperspectral Imager (HySI) was designed and developed for Chandrayaan‐1 and the same was first flown on Indian Mini satellite‐1 (IMS‐1) in 2008 with minor modifications. The IMS‐1 instrument provided 64 band spectrum in visible and near IR region with about 505 m spatial resolution and 130 km swath. It used a Telecentric lens, wedge filter based spectral dispersion, Active pixel area array sensor (512 × 256), highly miniaturized mechanical structure and electronics. It was a medium resolution spectrometer with over‐sampling in spectral domain. The design and development of compact HySI was possible due to usage of many innovative approaches. IMS1‐HySI was aimed at validating the design of compact instrument and also to provide hands on experience to the scientists on the usage of wedge filter based HySI data before they use moon data from Chandrayaan‐1. This development was a great stride for the ISRO's hyperspectral instrumentation team. This experience was also used in designing high sensitive 512 band HySI for measuring air‐glow spectrum onboard Youthsat. This chapter gives a brief description of the instrument and the subsystems, developmental highlights and test results of IMS1‐HySI. It also gives a brief account of data products and post launch performance of the instrument.
Hyperspectral Imager Onboard Indian Mini Satellite‐1
Optical Payloads for Space Missions ; 141-160
2015-12-10
20 pages
Article/Chapter (Book)
Electronic Resource
English
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