Soil moisture investigation for the different agricultural crops using ERS-1 and ERS-2 data

摘要: Within the Project AO2.PL102 sponsored by ESA following paper has been prepared. The data applied for project include images obtained Pilot PP.PL-4 1992-1994. SAR and ATSR-1 are used soil moisture assessment different agricultural crops. For 1992-1996 growing seasons various soil-vegetation ground measurements have carried out at time of ERS-1/2 overpasses. Also, survey was undertaken to record crop type with their actual development stage condition. Meteorological parameters as air temperature, wind speed, solar net radiation were also measured. Obtained SAR.PRI descending rectified Landsat TM georeferenced image. Backscattering coefficient ATSR (albedo surface temperature) extracted chosen test site. taken an average value each whole plot well measurement point (from block 9×9 pixels). Also NOAA/AVHRR registered closed overpasses processed obtain NDVI temperature values. AVHRR/NOAA pixels covered nearly same area on From backscatter NOAA pixel extracted. Comparison gave good results under separated vegetation roughness classes represented LAI index WDI calculated. This which reflects water condition compared values crops stages. going be presented 3rd ERS Symposium.