The Disaster Monitoring Constellation 1st generation (DMC-1) is a constellation of microsatellites coordinated by DMCii to provide frequent observations of the Earth for monitoring natural disasters. The satellites are designed and built by Surrey Satellite Technology Ltd (SSTL) and each satellite is independently owned and controlled by a DMC Consortium member.
The constellation operates in a low Earth orbit. Each satellite is phased at 90° to the next to enable a daily revisit of a point target on the Earth's surface.
The DMC-1 satellites operate in the visible to near-infra-red part of the spectrum, which makes them very useful for crop and forest monitoring as well as general Earth observation. DMC-1 imagery is also used to augment data acquired from the Landsat series of satellites.
The primary DMC-1 imaging payload is the SLIM-6 class imager. The design of this sensor provides a three spectral band, nadir pointing imager capable of providing high and mid-resolution images of the Earth's surface when operating in a sun-synchronous low Earth orbit.
The SLIM-6 imager is composed of two banks, each bank consisting of 3 channels (NIR, Red, Green spectral bands). The two imager banks are mounted at an angle to provide a total imaging swath of over 600 km and an overlap between the simultaneously acquired images.
|Spectral band description||Spectral bandwidth||GSD at nadir||Equivalent Landsat 7 ETM+ Spectral Channel|
|NIR||0.77 – 0.90 μm||31.822 m||ETM+4|
|RED||0.63 – 0.69 μm||31.822 m||ETM+3|
|GREEN||0.52 – 0.60 μm||31.822 m||ETM+2|
|ALSAT-1||CNTS (Algerian Centre National des Techniques Spatiales)||Algeria||90.3kg||MicroSat-100||28 November 2002||End of Life: Summer 2010||SLIM-6 (Surrey Linear Imager Multispectral 6 channels): 32-metre resolution imager in 3 spectral bands (NIR, red, green) with an extremely wide imaging swath of 600 km.|
|BILSAT-1||TUBITAK (Turkey)||Turkey||130.1kg||27 September 2003||End of Life: August 2006||PanCam (Panchromatic Camera): 12m resolution panchromatic sensor (swath 25km, Field of Regard 300km)
MSIS (Multispectral Imaging System): 4-band visible (red, green, blue) and near-infrared sensor with 26m resolution (swath 55km, Field of Regard 300km)
COBAN (Multiband Camera): eight-band low resolution multi-spectral imager (swath 75km)
|UK-DMC-1||BNSC (British National Space Centre)||UK||90.1kg||27 September 2003||Placed in a lower orbit in November 2010.
End of Life: November 2011
|SLIM-6 (Surrey Linear Imager Multispectral 6 channels): 32-metre resolution imager in 3 spectral bands (NIR, red, green) with an extremely wide imaging swath of 600 km.
GPS Reflectometry Experiment: to demonstrate GPS reflectometry measurements from the sea surface.
Water resistojet: experimental ultra low-cost micropropulsion system
CLEO (Cisco router in Low Earth Orbit)
DTN (Delay/Disruption Tolerant Networking)
|NigeriaSat-1||NASRDA (Nigeria Space Research & Development Agency)||Nigeria||90.1kg||27 September 2003||End of Life: September 2012||SLIM-6 (Surrey Linear Imager Multispectral 6 channels): 32-metre resolution imager in 3 spectral bands (NIR, red, green) with an extremely wide imaging swath of 600 km.|
|Beijing-1||BLMIT (Beijing Landview Mapping Information Technology Ltd)||China||163kg||SSTL-150||27 October 2005||SLIM-6 (Surrey Linear Imager Multispectral 6 channels): 32-metre resolution imager in 3 spectral bands (NIR, red, green) with an extremely wide imaging swath of 600 km.
CMT (China Mapping Telescope): 4m high resolution panchromatic imager (swath 24km, Field of Regard 800km)
The nominal orbital parameters of a DMC-1 satellite are:
|Orbit type||Sun Synchronous|
|Orbital Period||98.4 min|
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Latest EO Weekly Newsletter
14 December 2018 - Week 50/2018