Feasibility Study of Hyperspectral Line-Scanning Camera Imagery for Remote Sensing Purposes

Abstract

Hyperspectral instruments are used to characterise (terrestrial)and planetary surfaces, oceans and the atmosphere. At present there are a number of aircraft systems and space missions. Examples are DESIS on the ISS and MERTIS as part of the planetary mission Bepi Colombo. In this work a scanning system for hyperspectral panoramas is investigated. In classical systems with spectrographs, the input aperture is a long slit whose image is distributed over a 2-D detector array so that all points along a line in the scene are scanned simultaneously. The spectral dimension is then orthogonal to the slot. There are low cost hyperspectral scanners having 2D variable spectral filters with each filter positioned perpendicular to the direction of movement or flight. The biggest challenge when using these low-cost scanners, for example for airborne applications, is the mapping of the images of the individual spectral channels to each other (co-registration). The solution to the problem is the prerequisite for using this type of hyperspectral cameras. Therefore, an investigation should focus on the process of data collection, correction and registration. To test for future applications, the camera was operated as a panorama scanner. In order to evaluate the quality, the derived results of scene classification should be described here.