Landsat 7 Replacement
With a footprint more than three times wider than any Landsat mission and higher resolution multispectral imagery, GEOSAT-1 is an excellent substitute for Landsat 7 data with its well documented scan line failures.
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sales@apollomapping.com (303) 993-3863GEOSAT-1 Satellite
GEOSAT-1 satellite is great for large-scale agricultural projects with 22-meter resolution and red, green and NIR bands.
Sample imagery
The GEOSAT-1 Advantage
Priority Tasking
GEOSAT-1 can be tasked at standard and priority levels in short time periods. This can facilitate comparisons of on-the-ground studies to remotely sensed data-a distinct advantage versus the set revisit times and footprints of the Landsat satellites.
No Blue Band
GEOSAT-1 does not collect imagery with a blue band though a technique has been developed to simulate true color images (i.e. red, green and blue) for applications requiring such.
Change Detection Studies
The footprint of GEOSAT-1 is much larger than any competitor satellite so its archive is robust and growing each day. This makes GEOSAT-1 an ideal sensor for land change studies, particularly those focused on forests, vegetation and agriculture.
Overview & History
GEOSAT-1 was sent into space on July 29, 2009 propelled by a Russian-Ukrainian built Dnepr rocket from the Baikonur Launch Complex, Kazakhstan. This medium resolution satellite features 22-meter (m) resolution with 3 multispectral bands (i.e. green, red and near-infrared/NIR). GEOSAT-1 circles the globe at a maximum orbital height of 680 kilometers (km) collecting more than 5 million sq km of imagery per day with a footprint up to 625 km wide.
Since its launch, GEOSAT-1 has amassed a huge archive covering billions of square kilometers. Imaging the entire United States in just two weeks, GEOSAT-1 is considered by many to be a replacement for the failing but widely-utilized satellite, Landsat 7.
GEOSAT-1 Specifications
Launch Details
- Launch Date: July 29,2009 18:46 UTC
- Vehicle: Dnepr rocket
- Site: Baikonur Launch Complex, Kazakhstan
- Expected Mission Life: at least 5 years, greater than 7 years is expected
GEOSAT-1 Components
- Dimensions: 63.2 cm x 63.2 cm x 108.5 cm, 110 kg (microsatellite)
- Solar Array: 4 Gallium Arsenide (GaAs) panels, 15 Amp-hour lithium-ion battery
- Control Systems:
- Platform–SSTL-100 or MicroSat-100 family, built by Surrey Satellite Technologies Limited, a second generation DMC (Disaster Monitoring Constellation) satellite
- 3-axis momentum biased attitude control
- Actuators: 3 magnetorquers, 3 reaction wheels (MicroWheel-10SP-S)
- Altitude determination: 4 dual-axis sun sensors, dual-vector magnetometers
- Onboard Storage Capacity: 8 GBytes solid state data recorders
- Ground Communication Systems:
- Imagery downlink–up to 80 Mbit/s, X-band
- TT&C transmission–9.6 kbit/s uplink, 38.4 kbit/s downlink, S-band
- Focal Plane:
- Pushbroom upgraded Surrey Linear Imager Multispectral 6 (SLIM6) sensor
- 2 banks with 3 cameras mounted in double-barrel cross-track configuration
- 2 linear array CCD sensors–14,400 pixels per array, 5 µm/pixel
- Optical Sensor Assembly: 155.9-mm focal length
Orbit Characteristics
- Altitude: 642–680 km
- Period: 97.93 minutes
- Inclination: ~98.13°
- Direction: sun-synchronous near-circular, north to south (across the lit side of Earth)
- Equatorial Crossing Time: 10:30 AM local time (approximate; across lit side of Earth)
- Revisit Frequency: 2–3 days (varies with latitude)
Imaging System
- Spectral Bands: 3-band multispectral (green, red and NIR)
- Sensor Resolution: 22-m
- Spectral Band Wavelength Range: (in nm)
- Green–520 to 620
- Red–630 to 690
- NIR–760 to 900
- Dynamic Range: 8-bits or 10-bits
Collection Capabilities
- Footprint Width: up to 625 km
- Maximum Collection Geometry:
- Strip length, 8-bit mode–1,800 km
- Strip length, 10-bit mode–1,450 km
- Only collects at nadir imagery
- Daily Collection Capacity: > 5,0000,000 sq km
- Georeferenced Horizontal Accuracy: < 1 pixel, ~10 RMSE (global average, dependent on terrain, USDA testing)
Pricing
Data Source
archive (greater than 90 days old)
Minimum Order Size
6,000 sq km (per area & date)
Product Type
1:50,000 ortho + 3-band multispectral
Price Per Sq Km
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