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3. Altimetry

	Altimetry is basically a technique for measuring height. Satellite radar altimetry measures the time taken by a radar pulse to travel from the satellite antenna to the surface and back to the satellite receiver. Moreover, this measurement yields a wealth of other information that can be used for a wide range of applications.
		How it works Data flow Future technology improvements

Further information on radar:

• http://www.alphalpha.org/radar/intro_e.html
• www.radartutorial.eu
• http://en.wikipedia.org/wiki/Radar

Further information on radar remote sensing:

• http://ccrs.nrcan.gc.ca/resource/tutor/gsarcd/index_e.php
• http://rst.gsfc.nasa.gov/
• http://www.r-s-c-c.org/
• http://ceos.cnes.fr:8100/cdrom-00b2/astart.htm
• http://ceos.cnes.fr:8100/cdrom-00b2/ceos1/science/science.htm

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