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Thread: Can someone explain why the MRA4 has been cancelled before we screw up big time.
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Old 2nd Nov 2010, 02:50
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Modern Elmo
 
Join Date: Apr 2006
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Satellite detection still appears to be (you never quite know, we've had the odd surprise over the years after all) a 'wouldn't it be nice' idea rather than practical. Ideas like spotting the disturbance on the surface as a sub passes below are fairly old hat and I don't know but I'll bet nobody has got that idea to work.

http://www.sarusersmanual.com/ManualPDF/NOAASARManual_CH10_pg245-262.pdf


[PDF] Chapter 10. Underwater Topography

10.2 Principle of radar imaging of underwater bottom topography. It has been known for more than thirty years that, under certain conditions, underwater ...

If you scrolll down into that PDF file, there are some synthetic aperture radar images of sea surfaces and of bottom topography beneath the surface. The SAR devices were mounted on satellites.

The little white specks in some of the images are surface ships.

No, no mention of submarines in this paper. "NOAA" is National Oceanographic and Atmospheric Admin. Not military.

http://www.sarusersmanual.com/Manual..._pg245-262.pdf
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