Abstract
This paper introduces the updated plans of calibration and validation for two optical sensors i.e., the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) and the Advanced Visible and Near Infrared Radiometer type-2 (AVNIR-2), which are to fly on the Advanced Land Observing Satellite (ALOS). PRISM consists of three panchromatic radio- meters, and is used to derive a Digital Elevation Model (DEM) or a Digital Surface Model (DSM) with very high spatial resolution, which is also an objective of the ALOS mission. The geometric calibration is important in generating a highly accurate DEM by stereo pair images of PRISM. The radiometric calibration is also important for PRISM as well as AVNIR-2. The relative radiometric calibration will be done using acquired images over homogeneous targets such as the nighttime observation, ocean, deserts, and ice lands. The absolute radiometric calibration will be carried out by vicarious calibration and the cross calibration using with calibrated satellite images i.e., ASTER, IKONOS etc. In this paper, test simulations of calibration tools are described using current satellite images. Keywords-ALOS; PRISM; AVNIR-2; Calibration; Validation.
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