RADARSAT Constellation

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RADARSAT Constellation
Mission type Earth observation satellites
Operator Canadian Space Agency
Website asc-csa.gc.ca/eng/satellites/radarsat/default.asp
Mission duration 7 years (each satellite)[1]
Spacecraft properties
Bus Canadian SmallSat Bus[1]
Manufacturer MacDonald Dettwiler
Launch mass 4,200 kg (total mass of the 3 satellites)[1]
Start of mission
Launch date 12 June 2019[2]
Rocket Falcon 9
Contractor SpaceX
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous orbit
Inclination 97.74° [1]
Period 96.4 min
Transponders
Band C band
Frequency 5.405 GHz
Bandwidth 100 MHz

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This article is about the upcoming satellite mission. For the older satellite program, see RADARSAT.

The RADARSAT Constellation Mission (RCM) is a three-spacecraft fleet of Earth observation satellites operated by the Canadian Space Agency. The RCM's goal is to provide data for climate research and commercial applications including oil exploration, fishing, shipping, etc.[3] With satellites smaller than RADARSAT-2,[4] the RCM will provide new applications—made possible through the constellation approach—as well as continuing to provide C-band radar data to RADARSAT-2 users.[5] One of its most significant improvements is in its operational use of synthetic-aperture radar (SAR) data.[6] The primary goal of RCM is to provide continuous C-band SAR data to RADARSAT-2 users, as SAR imagery at a high temporal resolution is required by several users in the Canadian government.[6] Other improvements include more frequent area coverage of Canada and reduced risk of a service interruption.[7]

The three satellites were launched on 12 June 2019 at 14:17 UTC on board a Falcon 9 rocket.[2][8] Originally booster B1050 was planned to be used for this mission. However, after the failed landing of B1050, B1051 was used in this mission.[9]

Overview

Working alongside industry partners, the Canadian Space Agency (CSA) is in charge of mission planning and operations from their headquarters in Saint-Hubert, Quebec.[10] The project was accepted given these three objectives would be met: deliver C-band data to users within the Canadian government, produce daily coverage for ice, ship, and oil spill detection, and meet financial constraints to minimize cost of the program.[6] The Canadian Government will own the satellites and data and will be responsible for its dissemination. Several requirements were established for the RCM by the Canadian government. RCM is required to be able to access 95% of any point on the globe on an average day. It is also required to have a multi-polarization function to increase flexibility in its function, as well as be able to capture subsidence in terrain using Phase Preserving ScanSAR Processing.[6] The RADARSAT Constellation Mission (RCM) includes three identical Earth observation satellites. The prime contractor on the project is MacDonald Dettwiler and Associates and it was designed for three main uses:[11][12]

  • Maritime surveillance (ice, surface wind, oil pollution and ship monitoring)
  • Disaster management (mitigation, warning, response and recovery)
  • Ecosystem monitoring (agriculture, wetlands, forestry and coastal change monitoring)

RADARSAT collects data mainly from the land surface of Canada and the oceans around the country.[13] Its synthetic aperture radars (SAR) have a mass of 400 kg each, and a resolution of 1 × 3 m.[1] As secondary payload, it includes Automatic Identification System for ships (AIS).[14]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Satellite characteristics. RADARSAT Mission. Canadian Space Agency.
  2. ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ 6.0 6.1 6.2 6.3 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ RADARSAT - Main applications. Canadian Space Agency.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ RADARSAT - Components and specifications. Canadian Space Agency. Accessed on 16 January 2019.

External links

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