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A new scheme capable of suppressing polarisation sensitivity in the Brillouin optical time domain analysis distributed sensing system is demonstrated. The polarisation-induced signal fluctuation is suppressed from > + 300 mueuro (which causes measurement to fail) to + 50 mueuro by introducing a cost-effective polarisation diversity scheme on the pump light. Stable distributed strain measurement...
The current suite of spaceborne and in-situ assets, including those deployed by NASA, NOAA, and other groups, provides distributed sensing of the Earth's atmosphere, oceans, and land masses. As part of an activity supported through NASA's Earth Science Technology Office (ESTO), we have developed techniques that enable such assets to be dynamically combined to form sensor webs that can respond quickly...
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