Earth Observation & Science

SSTL's High Performance Earth Observation Capability


We design and build space systems from beginning to end and can offer a flexible mix of products and services to suit your mission requirements. 

We offer high resolution systems for high performance 7+ year missions combining 1 metre class imaging with high agility and accurate geolocation. 

 


Multi satellite constellations


Two or more co-ordinated satelllites provide better revisit times than single satellite systems. 

►Multiple satellites operating as a constellation can deliver near-real time imagery. 

►Comprehensive capability can be achieved by combining satellites with different sensors. 

►Constellations increase operational utility and reduce operational risk.  

SSTL-300 S1

Agile, sub-1 metre imaging system

The SSTL-300 S1 is the latest in the family of highly capable SSTL 300 platforms, providing sub-metre imagery with all the existing mission performance of the platform, and retaining its heritage.

Ideal for a wide range of commercial, civil and security applications, the agile SSTL-300 S1 Earth imaging system offers 0.75m GSD imagery with high speed downlink and 45 degree fast slew off-pointing.

The SSTL 300-S1 platform will fly on the DMC3 mission.

 

   

 

SSTL-300 S1 specification  Applications
Mission and System   
► Surveillance
► Security
► Multi-angle measurements
► National and urban mapping
► Agricultural monitoring
► Precision farming
► Orthographic mapping 
 
 
 
Download SSTL 300 S1 datasheet
 
 
 
 
Reference Orbit 500km, SSO, 10.30am LTAN
Design Lifetime 7 years
Space Segment 
Mass 350kg
GSD PAN: 0.75m   M/S: 3m
Swath 17km
SNR All bands > 100:1
MTF at Nyquist 10%
Digitisation 10 bits
Compression JPEG-LS configurable
Data Products Radiometrically and geometrically corrected images 
Stereo
Wide area
Off-Pointing Up to 45 degrees
Flexibility Fast slew
Safety & Security Encryption of all command and telemetry
Payload data encryption



SSTL-300

Agile, very high resolution imaging system

The SSTL-300 is an evolution of SSTL's heritage platform design, used in DMC+4 and TopSat, missions which have achieved over 10 years in-orbit heritage.

The agile SSTL-300 Earth imaging system offers 1 metre class multi-spectral imaging with high speed downlink and 45 degree fast slew off-pointing.

 
In orbit on NigeriaSat-2, launched 2011.

   

SSTL 300 specification  Applications
Mission and System   
► Surveillance
► Security
► Multi-angle measurements
► National and urban mapping
► Agricultural monitoring
► Precision farming
► Orthographic mapping 
 
 
 
 Download SSTL 300 datasheet
 
 
 
 
 
 















 
Coverage revisit 2 days worldwide
Design Lifetime 7 years
Space Segment 
GSD PAN: 1m   M/S: 2m
Wide area multispectral at 300km swath
Swath 300km
Data Products Radiometrically and geometrically corrected images 
Stereo
Wide area
Off-Pointing Up to 45 degrees
Flexibility Fast slew 45 degree off-track pointing, real-time downlink or store and forward
Safety & Security Encryption of all command and telemetry
Payload data encryption
Image throughput Greater than 400 images per day
Safety & Security Encryption of all command and telemetry
Payload data encryption



NovaSAR-S Synthetic Aperture Radar

Affordable, high performance space-borne Synthetic Aperture Radar (SAR) systems

NovaSAR-S combines our heritage SSTL-300 series avionics suite with a new structure and an innovative payload, developed in collaboration with Astrium, that can be adapted to different frequency bands.  

NovaSAR-S delivers all weather medium resolution Earth observation data night and day at a price similar to traditional optical missions, and significantly lower than any other SAR platform currently on the market, by leveraging highly efficient S-band solid state technology.  The platform is sized for a range of low-cost launch options. 

 
 
 
 

NovaSAR-S specification  Applications
Imaging frequency band  S-band (3.1-3.3 GHz)  
► Flood monitoring
► Agricultural crop assessment
► Forest monitoring
► Land use mapping
► Disaster management
► Maritime applications (e.g. ship detection and oil spill monitoring
 
 
  Download NovaSAR-S brochure
 
 Download NovaSAR-S datasheet
Design Lifetime 7 years
Mass <400kg
Lead time (KO to FRR) 24 months
Antenna Microstrip patch phased array (3m x 1m)
Imaging polarisations Single, dual or tri-polar
(HH, HV, VH, VV)
Optimum orbit 580km
(SSO or low inclination Equatorial orbit)
Payload duty cycle At least 2 minutes per orbit
(single image >800km long)
Typical duty cycle >1 million km² per day (mode dependent)



Earthmapper

"Always on" imaging system

Earthmapper is a global imaging system providing full coverage of the Earth's land area in 5 days.  Flown as a constellation of spacecraft, Earthmapper can image the entire global land mass every day.  

Earthmapper has a large volume of data storage and power generation capacity with high downlink availability.  The spacecraft builds on our heritage design offering advanced capability at low risk.

Ideal for rapid revisit and high coverage applications, Earthmapper offers greater opportunities to capture cloud free images.

   

Earthmapper specification  Applications
Mission and System   
► Mapping
► Agricultural monitoring
► Flood monitoring
► Water quality
► Disaster management
► National and urban mapping

 
 
 
 Download Earthmapper datasheet



 
 
 
 
 
 
Reference orbit 686km, SSO, 10.30am LTAN
Spectral bands Red, Green, Near Infrared
Design Lifetime 5 years
Satellite
Mass 100kg
GSD 22m
Swath 600km
SNR All bands > 100:1
Compression ratio 2:5:1 lossless (variable)
Digitisation 8 - 14 bits
Data storage 144 Gbytes
Downlink 80 - 160 Mbits/s depending on ground station
Data Products Radiometrically and geometrically corrected images 
Stereo
Wide area
Image throughput 61 million km² per day



 

SSTL-100 v3.0

Enhanced true colour imaging

A new imaging system, based on the next generation SSTL-100 platform, with more spectral bands and a wide imaging swath, giving much improved imagery in both quality and quantity for a variety of applications.

The addition of SWIR and blue spectral bands provides true colour imaging with increased information density, broadening the range of applications.

 

   

SSTL 100 v3.0 specification  Applications
Mission and System   
► Mapping
► Agricultural monitoring
► Flood monitoring
► Water quality
► Disaster management
► National and urban mapping
►Geological mapping
►Vegetation mapping
►High accuracy land cover assessments

 
 
Download SSTL 100 v3.0  datasheet
 








    
Reference orbit 703km, SSO, 10.30am LTAN
Spectral bands SWIR 1550-1750 nm
Blue 450-515 nm
Green 525-605 nm
Red 630-690 nm
NIR 774-900 nm
Design Lifetime 5 years
Satellite
Mass 100kg
GSD 10 - 15m VSNIR
20 - 30m SWIR
Swath 440km
SNR All bands > 100:1
Data Products Radiometrically and geometrically calibrated images

High Resolution Imagers from SSTL

 SSTL VHRI 100 and 250 - Very High Resolution Imagers

    Always at the forefront of development, the SSTL VHRI 100 and 250 are compact, very high resolution and low power pushbroom imagers. 

The VHRI 100 and 250 imagers provide high resolution imagery in 5 wavebands, using five linear detector arrays separated in the along-track direction in the common focal plane of a telescope.

The SSTL VHRI 250 is imaging on NigeriaSat-2.  
The SSTL VHRI 100 will fly onthe latest generationa SSTL-300S1 platform for the DMC3 constellation.

Applications
►Rapid monitoring
►Forest inventory
►Disaster monitoring
►Environmental management
►Infrastructure mapping
►Urban growth monitoring
►Crop subsidy verification
►Pipeline monitoring
►Change detection
►Military applications: surveillance, target identification

Download SSTL VHRI 250 datasheet
 

CHRIS hyperspectral imager
    The SSTL CHRIS imager is a highly versatile hyperspectral system with more than 9 years inflight heritage, offering in-orbit programmable selection of spectral bands location, bandwidth and ground sampling distance. In orbit since 2001 and provides the highest spatial resolution of any hyperspectral system, attracting a substantial international user community.

The SSTL CHRIS imager is imaging on Proba-1.

Applications
►Rapid monitoring
►Precision farming
►Regional yeild forecasting
►Forest inventory
►Disaster monitoring
►Environmental management
►Vegetation classification
►Air quality assessments
►Water quality
►Seabed classification
►Military applications: surveillance, target identification


Download SSTL CHRIS datasheet
 


Download Comparative Resolutions datasheet


 
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