Data compression is essential to current low-earth-orbit spectral sensors with global coverage, e.g. meteorological sensors. Such sensors routinely produce in excess of 30 Gb of data per orbit ( over 4 Mb/s for about 110 min. ) while typically limited to less than 10 Gb of downlink capacity per orbit ( 15 minutes at 10 Mb/s ). Astro-Space Division develops spaceborne compression systems for com...

The present report describes the determination of a set of monthly tiepoints for use in sea ice retrieval by passive microwave radiometry. From archived DMSP F-13 SSM/I data from 1996 and 1997 as well as surface temperatures from the NCEP reanalysis, emissivities are computed and analysed on a 250x250 km grid. The results are sets of monthly tiepoints for First Year ice and Open Water extracted...

Computation of the meteorological parameters in airport environment is a more difficult task than it may appear -at first. This work contributes with a practical description to describe this question when embedded systems are available. It is based on the author’s experience as system designers and in international rules from the International Civil Aviation Organization (ICAO). Sensors embedde...