Calibration and Validation of Prism Onboard Alos
نویسنده
چکیده
This paper introduces the updated plans for sensor calibration and product validation of the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM), which is to fly on the Advanced Land Observing Satellite (ALOS) satellite that will be launched this Japanese fiscal year. PRISM is used to derive digital elevation models (DEMs) with very high spatial resolution, which is also one of the objectives of the ALOS mission. To achieve this objective, PRISM consists of three panchromatic radiometers for forward-, nadir-, and backward-looking in the along-track direction, and acquires the images in the same orbit and at almost the same time. The geometric calibration is important in generating a highly accurate DEM with high spatial resolution by using PRISM’s triplet images. Highly accurate ground control points (GCP) are necessary to calibrate the geometric accuracy and validate the generated DEM. Collecting GCP worldwide is difficult and hard work in spite of its importance. In this paper, we describe the current plans for calibrating and validating PRISM aboard the ALOS, and in particular, our strategies for preparing GCP with evaluation items for geometric calibration, including expected problem effects regarding geometric accuracy.
منابع مشابه
PRISM geometric validation and DSM generation status
PRISM carried at ALOS satellite is expected to generate worldwide topographic data in respects of its high resolution and stereoscopic observation. The software for generating Digital Surface Model was developed for the purpose of equipping the ground system which produces DSM semi-routinely in Earth Observation Research Center / Japan Aerospace Exploration Agency (EORC / JAXA). First, the geom...
متن کاملCal/Val Results and Accuracy Assessment Plan for PRISM and AVNIR-2 Onboard ALOS
This paper introduces the updated results of calibration for optical instruments of the Advanced Land Observing Satellite (ALOS, nicknamed “Daichi”), was successfully launched on January 24th, 2006, and it continuously working very well. ALOS has three mission instruments; an L-band Synthetic Aperture Radar called PALSAR, and two optical sensors called PRISM and AVNIR-2. PRISM stands for the Pa...
متن کاملDevelopment of Glacier Lake Inventory in the Bhutan Himalayas Using PRISM and AVNIR-2 Onboard ALOS “DAICHI”
This study is describe to development of glacial lake inventory in the Bhutan Himalayas using the Panchromatic Remote Sensing Instrument for Stereo Mapping (PRISM) and the Advanced Visible and Near Infrared Radiometer type-2 (AVNIR-2) onboard the Advanced Land Observing Satellite (ALOS, nicknamed “Daichi”) to contribute to the evaluation of potential Glacial Lake Outburst Floods (GLOFs) and the...
متن کاملGeometric Modeling and Validation of Alos/prism Imagery and Products
PRISM is a panchromatic radiometer carried onboard of the new generation Japanese remote sensing satellite ALOS (Advanced Land Observing Satellite). It has three optical systems for forward, nadir and backward views with 2.5 meter spatial resolution. Multiple Linear Array CCD chips are located on the focal plane of each camera, along one across-track line. Three PRISM images per scene are acqui...
متن کاملDevelopment and Validation of New Glacial Lake Inventory in the Bhutan Himalayas Using ALOS ‘DAICHI’
This study aims to develop and validate a new glacial lake inventory in order to gain an understanding of existing conditions. This is being done using optical imageries acquired by the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) and the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) onboard the Advanced Land Observing Satellite (ALOS, nicknamed ‘Daichi’). ...
متن کامل