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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 RCM will provide the world's most advanced, comprehensive method of maintaining Arctic sovereignty, conducting coastal surveillance, and ensuring maritime security.[8]

RADARSAT Constellation
Mission typeEarth observation satellites
OperatorCanadian Space Agency
Websiteasc-csa.gc.ca/eng/satellites/radarsat/default.asp
Mission duration7 years (each satellite)[1]
Spacecraft properties
BusCanadian SmallSat Bus[1]
ManufacturerMDA
Launch mass4,200 kg (total mass of the 3 satellites)[1]
Start of mission
Launch date12 June 2019[2]
RocketFalcon 9 Block 5 B1051.2
ContractorSpaceX
Orbital parameters
Reference systemGeocentric
RegimeSun-synchronous orbit
Altitude600 km
Inclination97.74° [1]
Period96.4 min
Transponders
BandC band
Frequency5.405 GHz
Bandwidth100 MHz
 

The three satellites were launched on 12 June 2019 at 14:17 UTC on board a Falcon 9 rocket.[2][9] Originally booster B1050 was planned to be used for this mission. However, after the failed landing of B1050, B1051 was used in this mission.[10]


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.[11] 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 MDA and it was designed for three main uses:[12][13]

RADARSAT collects data mainly from the land surface of Canada and the oceans around the country.[14] 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).[15]


See also



References





На других языках


[de] Radarsat Constellation

Die Radarsat Constellation ist eine Konstellation von drei kanadischen Erdbeobachtungssatelliten. Sie ist ein Nachfolgeprojekt für die Satelliten Radarsat-1 und Radarsat-2 bzw. das Projekt Polar Epsilon. Die Planung des Projektes begann im Jahr 2005, und der Start erfolgte am 12. Juni 2019. Die Satelliten wurden von dem kanadischen Unternehmen MDA Space Missions gebaut.
- [en] RADARSAT Constellation

[es] RADARSAT Constellation

RADARSAT Constellation Mission (RCM, en español "Misión de Constelación RADARSAT") es una constelación de tres satélites de observación terrestre de la Agencia Espacial Canadiense. Con satélites más pequeños que RADARSAT-2, el RCM proporcionará nuevas aplicaciones, posibles gracias al enfoque de la constelación, y continuará proporcionando datos radiales de banda C a los usuarios de RADARSAT-2.[2][3] Una de sus mejoras más significativas es en su uso operacional en datos de radar de apertura sintética (SAR).[4] El objetivo principal de RCM es proporcionar datos SAR continuos de banda C a los usuarios de RADARSAT-2, ya que varios usuarios del gobierno canadiense requieren imágenes SAR en una resolución temporal alta.[4] Otras mejoras incluyen una cobertura de área más grande en Canadá y un menor riesgo de interrupción del servicio.[5]

[ru] RADARSAT Constellation

RADARSAT Constellation — канадская спутниковая группировка для дистанционного зондирования Земли, призванная продолжить работу, выполняемую своим предшественником, спутником RADARSAT-2, запущенным в 2007 году. Основными пользователями данных, получаемых со спутников, будут Министерство национальной обороны и другие правительственные агентства Канады.



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