DETERMINATION OF NOISE EQUIVALENT REFLECTANCE FOR A MULTISPECTRAL SCANNER—A SCANNER SENSITIVITY STUDY

摘要

The methods used to calculate the sensitivity parameter noise equivalent reflectance of a remote-sensing scanner are explored, and the results are compared with values measured over calibrated test sites. Data were acquired on four occasions covering a span of 4 years are providing various atmospheric conditions. One of the calculated values is based on assumed atmospheric conditions, whereas two others are based on atmospheric models. It was found that the assumed atmospheric conditions provide useful answers adequate for many purposes. A nomograph is development to indicate sensitivity variations due to geographic location, time of day and season.