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The Operational Linescan System (OLS) is the primary sensor on the the DMSP satellites. The OLS sensor is a two- channel radiometer with visible (0.4 - 1.1um) and infrared (10 - 12um) channels. Each has a nearly constant spatial resolution of 0.55km across the scan line. This produces about 12 lines of data per second with about 7300 samples per line per channel. The OLS is the DMSP counterpart to the NOAA AVHRR sensor (see avhrr), although there are some significant differences between the two. Most significant among these are that the OLS has a higher resolution and nearly constant sample size across the scan line, however the radiometry is not as precise. Thus the OLS is designed to produce more accurate and precise imagery rather than accurate radiometry.
The OLS data is transmitted in all four DMSP telemetry streams and the TeraScan system
provides sensor ingest functions for each of these streams (see dmsp).
dmsp, avhrr, fastreg, fixline, emath, rtdin, sdfin, rdsin, master, xvu, datasets.
Last Update: $Date: 2001/10/15 23:58:58 $