摘要: This report is produced in accordance with the requirements outlined in the NASA Research Grant NAG9-1032 titled 'Validation of Land Cover Maps Utilizing Astronaut Acquired Imagery'. This grant funds the Remote Sensing Research Un... 展开 This report is produced in accordance with the requirements outlined in the NASA Research Grant NAG9-1032 titled 'Validation of Land Cover Maps Utilizing Astronaut Acquired Imagery'. This grant funds the Remote Sensing Research Unit of the University of California, Santa Barbara. This document summarizes the research progress and accomplishments to date and describes current on-going research activities. Even though this grant has technically expired, in a contractual sense, work continues on this project. Therefore, this summary will include all work done through and 5 May 1999. The principal goal of this effort is to test the accuracy of a sub-regional portion of an AVHRR-based land cover product. Land cover mapped to three different classification systems, in the southwestern United States, have been subjected to two specific accuracy assessments. One assessment utilizing astronaut acquired photography, and a second assessment employing Landsat Thematic Mapper imagery, augmented in some cases, high aerial photography. Validation of these three land cover products has proceeded using a stratified sampling methodology. We believe this research will provide an important initial test of the potential use of imagery acquired from Shuttle and ultimately the International Space Station (ISS) for the operational validation of the Moderate Resolution Imaging Spectrometer (MODIS) land cover products. 收起