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27) 28). RainCube (Radar in a CubeSat) is a technology demonstration mission to enable Ka-band precipitation radar technologies on a low-cost, quick-turnaround platform. 510 The objective of AMM-2 was to acquire repeat-pass interferometry to estimate ice surface velocity of the outer regions of the continent (see description below). Copyright © 2015-2020 Tyvak Nano-Satellite Systems, Inc.. By using our site, you acknowledge that you have read and understand our Legal Terms, Cookie Policy, and Privacy Policy and agree to the usage and storage of necessary cookies. Langham, S. Ahmed, "RADARSAT," reprint from Proceedings of the IEEE, Vol. • In Sept-Oct. 1997, RADARSAT-1 conducted AMM-1 (Antarctic Mapping Mission-1), representing the first mapping of the ice sheet on Antarctica (see description below). - Radiometric calibration continues to be maintained despite OBR (On-Board Recorder) no longer available for Amazon data acquisitions: an alternate site (Boreal Forest) within reach of Canadian receiving facilities is now used. Make it rain in your garden anytime, from anywhere with the Raincube computer and app. SAR (Multi-Mode pulsed instrument; observation in C-band (5.3 GHz, 5.6 cm wavelength, RF bandwidth: 11.6 MHz, 17.3 MHz, or 30.0 MHz; transmitter power: up to 5 kW), transmitting and receiving horizontally polarized radiation. RADARSAT-1 has and continues to provide crucial images to assist disaster management efforts under the `International Charter for Space and Major Disasters'. The observational SAR data is useful to both commercial and scientific users in such fields as disaster management, interferometry, agriculture, cartography, hydrology, forestry, oceanography, ice studies and coastal monitoring. It is currently in orbit. The current mission extension ends on March 31, 2012. The number of RADARSAT-1 ground stations has evolved over years of operation. Sponsored by NASA’s Earth Science Technology Office (ESTO) through the InVEST-15 program, RainCube developed a 35.75 GHz radar payload to operate within the 6U CubeSat form factor. • The RADARSAT-1 radiometric performance and image quality have continued to consistently excel from the early Maintenance Phase to present (2006), in the fourth year of the extended mission. ScanSAR is a technique permitting extended observation coverage (wider swath) on command. 3, 10% overlap 6, 3% overlap, - * Nominal: range dependent and processor dependent, - ** Nominal: ground range resolution varies with range. Please make a donation to support Gunter's Space Page. The RADARSAT MMO (Mission Management Office), and the MCF (Mission Control Facility) are located at CSA in Saint-Hubert, Quebec. It was selected in 2016 by NASA's CubeSat Launch Initiative (CSLI) program by the CubeSat Launch Initiative (CSLI) to be launched as part of the ELaNa program. The antenna comprises one fixed and four deployable panels, each with 32 slotted waveguides fed by beam-forming networks which produce the varied coverage swaths of the radar. • On Nov. 27, 2002, CSA temporarily discontinued Radarsat-1 imaging operations on 27 November 2002 because of a deteriorating ACS (Attitude Control System) that affects the satellite's ability to deliver precise imaging to global clients. AMM yielded the first high-resolution (25 m) radar mosaic of Antarctica, the product of which is now termed the "Antarctic Mosaic." 14), • In the summer of 2010, the SAR calibration and image quality is still being maintained better than original specifications and design goals of the RADARSAT-1 System Specification document. RainCube (Radar in a CubeSat) is a technology demonstration mission to enable Ka-band precipitation radar technologies on a low-cost, quick-turnaround platform. Extended range coverage can be obtained by using a set of contiguous beams, enabling images to swath widths of up to 500 km. The RADARSAT-1 Background Mission archives also contain 10 m resolution data acquired by means of moderately shallow fine-beam modes over some 170 major cities and capital towns. Hence, the S/C was not rotated resulting in an acquisition limitation to about 80º S. CSA applied applied special orbit maintenance to minimize the baseline over the three acquisition cycles. Spacecraft Launch Mission Status Mission Information References. It was Canada's first Earth observation satellite. This is accomplished at no increase in mean data rate from the sensor, but at the cost of degraded resolution of the resulting image. Third Row: Nacer Chahat, Jonathan Sauder, Stuart Gibson, Greg Cardell, Brad Ortloff, Brandon Wang, Taryn Bailey, Dominic Chi esas-envisat-service-interrupted.html, 11) Surendra Parashar, Satish Srivastava, Ahmed Mahmood, Denis Auger, "RADARSAT-1 Mission," Proceedings of IGARSS (International Geoscience and Remote Sensing Symposium), Munich, Germany, July 22-27, 2012, 12) Information provided by Ahmed Mahmood, CSA, St. Hubert, Quebec, Canada, 13) S. Cote, S. Srivastava, S. Muir, R. Hawkins, " Canadian Government Calibration Operations: Imaging Performance Update in the Fifteenth Year of Service," Proceedings of the CEOS SAR Cal/Val Workshop, Zürich, Switzerland, Aug. 25-27, 2010, 14) Marc Boucher,"RADARSAT-1 Mosaics Released to the Public," Space Ref Canada, Nov. 18, 2010, URL: http://spaceref.ca/missions-and-programs/canadian-space- 3) R. K. Raney, A.P. Precipitation profiling capabilities are currently limited to a few instruments deployed in Low Earth Orbit (LEO), which cannot provide the temporal resolution necessary to observe the evolution of weather phenomena at the appropriate temporal scale (i.e., minutes). The cooperative project involves the Canadian government under the aegis of CSA (Canadian Space Agency), and the private sector. S/C pointing accuracy of ±0.1º (roll, pitch and yaw), pointing knowledge of 0.05º. 45 RF communications: Two parallel X-band downlinks for SAR data transmission [8105 MHz for real-time data at 105 Mbit/s, and 8230 MHz for playback data at 85 Mbit/s; modulation in QPSK, signal quantization = 4 bit (I and Q); RF power = 22 W per channel]. -All testing complete, NASA JPL RainCube flight in May 2018-Patent Pending-0.5m Deployed Aperture-1.6U Stowed Volume-42.7 dB Gain-With modifications to subreflector and feed, antenna can be made to operate at S, C, X, Ku, and K bands-Communication and radar applications Extended (L), 25 x 28 This mission will validate a new architecture for Ka-band radars and an ultra-compact deployable Ka-band antenna in a space environment. Secondly, and the real challenge of AMM-2, was to acquire interferometric data so as to estimate velocity fields. - The CDPF (Canadian Data Processing Facility), operated by MDA, has remained the reference processing facility for RADARSAT-1 data quality control since the start of the Maintenance Phase in Feb. 1997. Raincube, Saint Petersburg, Florida. - As of June 25, 2012, RADARSAT-1 completed 86,868 orbits, planned 351,160 user requests corresponding to a total acquisition of  658,391 minutes of SAR data. JPL Europa . The Linux based Endeavour avionics board provides a data recorder and processing for the command and data handling and attitude determination & control system. TT&C link in S-band. The S/C prime contractor is Spar Aerospace Ltd. of Toronto, Ontario (Ball Aerospace & Technologies Corp. of Boulder, CO provided the spacecraft bus). http://hackaday.com/2016/12/09/raincube-spreads-its-umbrella/, Front Row: Chaitali Parashare, Alessandra Babuscia, Shivani Joshi, Shannon Statham, Eva Peral, Elvis Merida, Marvin Cruz, Carlo Abesamis • Effective as of Feb. 1, 1999, all ScanSAR images generated by the CDPF (Canadian Data Processing Facility) are radiometrically calibrated. Most data downlinks are in real-time requiring a network of ground receiving stations for global coverage. 2) "RADARSAT," Special Issues of the Canadian Journal of Remote Sensing, Vol 19, No 4, 1993, ISSN 0703-8992. Final processing of the data into map quality mosaics was performed at the Byrd Polar Research Center using a Vexcel software system called the RADARSAT Antarctic Mapping System (RAMS). It assisted with information gathering during 244 disaster events and literally mapped the world, providing complete coverage of the World's continents, continental shelves and polar icecaps. The flight assembly of the radar electronics and stowed antenna fills about 4.5U of the spacecraft’s 6U volume. 6, June 1991, 4) RADARSAT Annual Review 1997/98, CSA brochure, p. 19, 5) http://www.asc-csa.gc.ca/eng/satellites/radarsat1/, 6) "Open data: over 36,000 historical RADARSAT-1 satellite images of the Earth now available to the public," CSA, 1 April 2019, URL: https://www.canada.ca/en/space-agency/news/2019/03/open-data-over-36000- • In 2013, the RADARSat-1 mission continues to deliver important data well beyond its planned lifetime. At platform altitude of 400 km or less, demonstrate: - Horizontal resolution: 10 km or better, Enable future precipitation profiling Earth science missions on a low-cost, quick-turnaround platform. http://www.tyvak.com/, RainCube in the News Although other missions do regular yaw maneuvers to reorient S/C, RADARSAT-1 was the first satellite to perform this maneuver to map the entire Antarctic continent (a region the size of Canada and Alaska combined), including the South Pole. 20 - 31 18), RADARSAT-1 was also used for cross-calibration purposes of RADARSAT-2 (launch on Dec. 14, 2007). Other Private Clients. 15), • The RADARSAT-1 mission is operating "nominally" in 2010 in its extended mission phase - completing its 15th anniversary on orbit in Nov. 2010 (launch Nov. 4, 1995). • RADARSAT-1 was used in the period Sept. 3 - Nov. 14, 2000 to conduct AMM-2 (Antarctic Mapping Mission-2). The TT&C stations are located in Saint-Hubert and in Saskatoon, Saskatchewan. agency/radarsat-1/radarsat-1-mosaics-released-to-the-public.html, 15) Satish Srivastava, Stephane Cote, Stephanie Muir, Robert Hawkins, "The RADARSAT-1 imaging performance, 14 years after launch, and independent report on RADARSAT-2 image quality," Proceedings of IGARSS (IEEE International Geoscience and Remote Sensing Symposium) 2010, Honolulu, HI, USA, July 25-30, 2010, 16) Jeff Hurley, "Operational Review: RADARSAT-1 & -2," SEASAR Workshop 2010, January 25-29, 2010, Frascati, Italy, URL: http://earth.eo.esa.int/workshops/seasar2010/8_Hurley.pdf, 17) Ahmed Mahmood, "RADARSAT-1, RADARSAT-2 and RCM," GSCB ()Ground Segment Coordination Body) Workshop, June 18-19, 2009, ESA/ESRIN Frascati, Italy, URL: http://earth.esa.int/gscb/papers/3.3_Mahmood.pdf, 18) S. Cote, S. K. Srivastava, R. K. Hawkins, "Twelve years of RADARSAT-1 Calibration: Operations Experience and Lessons Learned," Proceedings of IGARSS 2008 (IEEE International Geoscience & Remote Sensing Symposium), Boston, MA, USA, July 6-11, 2008, 19) S. Parashar, A. Mahmood, D. Showalter, S. Srivastava, "Contributions and Plans of Canadian RADARSAT-1 Mission," 58th IAC (International Astronautical Congress), International Space Expo, Hyderabad, India, Sept. 24-28, 2007, IAC-07-B1.1.07, 20) S. Cote, S. Srivastava, P. Le Dantec, R. Hawkins, "From Commissioning to Extended Mission: 9 Years of Maintaining RADARSAT-1 Image Quality," Proceedings of EUSAR 2006, Dresden, Germany, May 16-18, 2006, 21) S. Cote, P. Le Dantec, T. Lukowski, S. Srivastava, R. Hawkins, "Monitoring RADARSAT-1 Elevation Beam Pattern using the Canadian Boreal Forest: an Experiment," Proceedings of EUSAR 2006, Dresden, Germany, May 16-18, 2006, 22) S. K. Srivastava, S. Cote, P. Le Dantec, R. K. Hawkins, "RADARSAT-1 Image Quality Excellence in the Extended Mission," Proceedings of IGARSS 2005, Seoul, Korea, July 25-29, 2005, 23) S. Cote, S. K. Srivastava, P. Le Dantec, R. Gray, R. K. Hawkins, K. P. Murnaghan, "RADARSAT-1 Image Quality Evolution to the Extended Mission," Montreal, Canada, May 17-20, 2004, 24) "Sensor Description - RADARSAT-1," URL: http://imaging.geocomm.com/features/sensor/radarsat1/, 25) S.K.

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