METHODS OF EXTENDING SIGNATURES AND TRAINING WITHOUT GROUND INFORMATION

摘要

Methods of performing signature extension, using LANDSAT-1 data, are explored. The emphasis is on improving the performance and cost-effectiveness of large area wheat surveys. Two new methods were developed — ASC, and MASC. Two methods, Ratio, and RADIFF, previously used with aircraft data were adapted to and tested on LANDSAT-1 data. Included in this study was an investigation into the sources and nature of between scene data variations.nInitial investigations into the selection of training fields without in situ ground truth were undertaken.