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The Disaster Monitoring Constellation (DMC) is an international program initially proposed in 1996 and led by SSTL (Surrey Satellite Technology Ltd), Surrey, UK, to construct a network of five affordable Low Earth Orbit (LEO) microsatellites. The objective is to provide a daily global imaging capability at medium resolution (30-40 m), in 3-4 spectral bands, for rapid-response disaster monitoring and mitigation.

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Mission Data:

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Facts and figures 
Operators SSTL
Dates of Launch
First Generation
  • ALSAT-1: 28 Nov 2002 - operations terminated 2010
  • BILSAT-1: 27 Sep 2003 - operations terminated Aug 2006
  • NigeriaSat-1: 27 Sep 2003
  • UK-DMCSat-1: 27 Sep 2003
  • Beijing-1: 27 Oct 2005
Dates of Launch
Second Generation
  • Deimos-1: 29 Jul 2009
  • UK-DMC-2: 29th Jul 2009
  • NigeriaSat-2: 17 Aug 2011
  • NigeriaSat-X: 17 Aug 2011
Orbit Height 686 km
Orbit Type Sun-synchronous circular
Repeat Cycle 14 days
Constellation revisit time daily revisit (imaging capability) to any point on the equator
Swath Width 600km+
Resolution 30-40 m for MS (Multispectral bands)
Onboard Sensors provided under TPM MSC (Multi-Spectral Camera)