avsharp [ parameter=value ... ] [ inputfile ... ]
Parameters are: include_vars
avsharp filters uncalibrated AVHRR raw count data in place using a deconvolution algorithm defined in 5th AVHRR Data User's Proceedings (see reference below). The algorithm will "sharpen" an AVHRR image by subtracting from each pixel any contamination caused by sensor over-sampling into adjacent pixels. This command will not work on subsampled datasets.
List of variables to sharpen. If the list is preceded by a minus sign, then all variables except those listed will be sharpened. Wildcards * and ? are allowed. The default is to sharpen all variables.
To sharpen all 5 hrpt channels in a tdf dataset:
% avsharp input file(s) : char(255) ? avhrr.raw include_vars : char(255) ? [] av* avhrr.raw: fixing avhrr_ch1 ... avhrr.raw: fixing avhrr_ch2 ... avhrr.raw: fixing avhrr_ch3 ... avhrr.raw: fixing avhrr_ch4 ... avhrr.raw: fixing avhrr_ch5 ... %
Manstein & Gesell: Proceedings of 5th AVHRR Data User's Meeting, pg 53.
Last Update: $Date: 1998/05/28 19:45:45 $