Спутник ДЗЗ. Radarsat 1. [Редактировать]

Radarsat 1 - это канадский космический аппарат ДЗЗ (радиолокатор С диапазона), который был запущен в 1995 году на 832 км. солнечно-синхронную орбиту. Аппарат вышел из строя 29 марта 2013 года.

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - Канада
2Страна производитель - Канада
3Тип оператора(владельца) - государственный
4Тип орбиты - НОО
5Радиолокационные спутники ДЗЗ
6Все спутники ДЗЗ

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг2750
2Платформа, BCP-40001

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (аппарат), млн. долл.620

Найдено 1000 документов по запросу «Radarsat 1». [Перейти к поиску]


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0.06/5
.... MAIN ACCOMPLISHMENTS IN 2009-2010 RADARSAT-2 is full y op erational since... for the RADARSAT Constellation, the follow-on m ission to RADARSAT-2, to be... met MOPITT (1999) OSIRIS (2001) RADARSAT-1 (1995) In operation Analysis of... Management, Security and Foreign Policy -5- RADARSAT-2 (2008) In operation SCISAT (2003... stage: Mission Status Field Constellation RADARSAT (2014) In development Environment, Resource... us ed RADA RSAT-1 and RADARSAT-2 flashed-flood products to better.../Arctic : The RA DARSAT-1 and RADARSAT-2 mosaic of the Foxe B asin... apertur e radar (S AR), such as RADARSAT-2, c an provide large are a high... information by m eans of polarimetric RADARSAT-2 data in open-sea and... like ENVIS AT/MERIS and RADARSAT-2 are integrat ed in agriculture...)  Following the successful launch of RADARSAT-2 in December 2007, the Canadian... deve lopments in applications of RADARSAT data and innovative research and... (EO)  A Prelim inary Design for RADARSAT Co nstellation, initiated in Nove... held to discuss interoperability between RADARSAT C onstellation and Sentinel-1 C-band SAR... of royalties from sale of RADARSAT-1 data estimated at $4.1 million. Analysis... per requirements. (Target: services for RADARSAT-1, RADARSAT-2 and Target met: Services and... as per requirements for RADARSAT1, RADARSAT-2 and SCISAT-1. SCISAT-1) EXPECTED RESULT...-1; 5 000 SAR minutes from RADARSAT-1; 5 000 images from RADARSAT-2) Target exceeded: 900 Gbytes from SCISAT-1, 9,000 SAR minutes from RADARSAT-1, 21,060 images from RADARSAT-2. EXPECTED RESULT #3 EO... of royalties from sale of RADARSAT-1 data estimated at $ 4.1 million. Highlights... Accomplishments – Space Mission Operations (EO)  RADARSAT-1 opera tion was f ully m aintained... Canadian govern ment clients from RADARSAT-2 as per client needs. The... capa bility to ESA using RADARSAT-1 and RADARSAT-2. Analysis of Program Activities... 30 Charter activ ations providing RADARSAT-1 and RADARSAT-2 data world-wide for... in the building of Canadian RADARSAT-1. ESA - EXOMARS ExoMars is a European... Aperture Radar (SAR) (Similar to RADARSAT-2) to provide operational data continuity... Program Activities by Strategic Outcome RADARSAT-1 RADARSAT-1, Canada' s first Earth Observa tion... November 1995, RADARSAT-1 was m eant to operate f or five years. RADARSAT-1 has... clients in its extended mission. RADARSAT-2 RADARSAT-2 was launched on Decem ber... and experience gained through the RADARSAT-1 mission. RADARSAT Constellation (RCM) The RADARASAT... is the evolution of the RADARSAT m issions with the objectiv e of...



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... (2,004) 0.6 60-134 2001 RADARSAT MDA MDA RADARSAT-1 RADARSAT-2 RCM 2,750 (6,050) 2,195... derived from the high-resolution RADARSAT-1 and RADARSAT-2 radar satellites. It also... Space Agency (CSA) operates RADARSAT-1, while RADARSAT-2 is operated by MDA in..., the RADARSAT-1 satellite launched aboard a Delta II launch vehicle. RADARSAT-2 launched aboard... CSA, proposed the three-satellite RADARSAT Constellation Mission (RCM). In March... 12/14/07 TerraSAR-X WorldView 1 RADARSAT 2 Dnepr Delta II SoyuzD Medium... Polar Satellite Launch Vehicle RCM RADARSAT Constellation Mission RRV Reusable Return...



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... added as distributed by EOSAT, RADARSAT, and the Indian Remote Sensing... numerous sensors including Spot, ESA, RADARSAT and CCRS Gould LIPS (LIP...-580  PALSAR SLC  PALSAR Vexcel  Radarsat-2  Sir-C  UAVSAR Polarimetric PostgreSQL (PostGIS... 3B data supported RADARSAT-2 (Read only) o Supports simulated RADARSAT-2 slant range single...



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... use of highresolution imagery from Radarsat-2 to spot ships suspected of... Operation Drift Net, involved 80 Radarsat scenes scanning portions of the... $22,300 per hour. The Radarsat test, in which the satellite... with the next-generation Radarsat system, the Radarsat Constellation, by adding an...



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0.11/5
RADARSAT RADARSAT-1: The Canadian Space Agency’s first ... develop, manage and deliver the RADARSAT-1 Program. Combined, the individual strengths... Space Technologies • Owns and operates RADARSAT-1 • Controls RADARSAT-1 in space, plans SAR data acquisition and delivery, and tasks RADARSAT...’s two RADARSAT-1 receiving stations • Oversees pre-processing, recording and archiving of RADARSAT-1 data • Conducts applications research RADARSAT International (RSI) • Processes, markets and distributes RADARSAT... Atmospheric Administration (NOAA) • Launched RADARSAT-1 • Distributes RADARSAT-1 data to the United States... • Pre-purchased RADARSAT-1 data Canadian Industry • Designed and built the RADARSAT-1 satellite and ground system • Contractually supports RADARSAT-1 operations and maintenance • Develops and sells RADARSAT-derived products... RADARSAT-1 Program: People Make the Difference 3 The RADARSAT-1 System: Improving Operational Efficiency 4 RADARSAT-1 Stations Cover the World 6 Background Mission Enriches RADARSAT-1 Archives 8 ADRO... Antarctica Revealed 12 Disaster Management: RADARSAT-1 Responds 14 Client Service Spurs... Applications 19 RADARSAT-2: Next-Generation SAR 23 Front cover: RADARSAT-1 imagery of... licence by RADARSAT International (RSI). Provided by CRISPand RSI. Svalbard RADARSAT-1 data... TSS. Distributed under licence by RADARSAT International (RSI). Produced and provided... same can be said about RADARSAT-1. RADARSAT-1 has pioneered revolutionary ways to... responsiveness and unique imaging capabilities, RADARSAT-1 continued to prove its versatility... the scheduled launch of RADARSAT-2 in 2002; RADARSAT-1 will be counted on... demand for RADARSAT-derived products and services — evidence of RADARSAT-1’s continued robustness... Directorate operates and manages the RADARSAT-1 Program. In 1999, Satellite Operations... reception, data processing RADARSAT-1 Order Desk Service RADARSAT-1 Satellite Control Centre and... reception and processing operators, the RADARSAT-1 satellite is efficiently satisfying customer... from nearly 60 countries. The RADARSAT-1 System: Improving Operational Efficiency The... resources and monitoring the environment. RADARSAT-1 data © Canadian Space Agency 1999... Sensing. Processed and distributed by RADARSAT International (RSI). Produced and provided... Image Quality Throughout 1999, the RADARSAT-1 calibration maintenance program continued to.... Images distributed under licence by RADARSAT International (RSI). Images produced and... the upcoming RADARSAT-2 program. Nearly 70 percent of the RADARSAT-1 archive data... Sensing. Processed and distributed by RADARSAT International. Produced and provided by... Sensing. Processed and distributed by RADARSAT International. Produced and provided by... Sensing. Processed and distributed by RADARSAT International. Produced and provided by... Hazardous Regions Under controlled conditions, RADARSAT-1 data can produce outstanding interferograms... 4 500 RADARSAT-1 scenes acquired during 18 days of the RADARSAT-1 Antarctic Mapping...-hour PCD operational baseline enhanced RADARSAT-1’s responsiveness to urgent disaster-related... P-3 hurricane penetration aircraft flights with RADARSAT-1 pass times, providing unique, high... opportunities. Producing a total of 225 RADARSAT-1 acquisitions, this program supplied images... from ERS-2, SPOT and RADARSAT-1. To that end, RADARSAT-1 images of Hurricanes... application of geospatial technologies, including RADARSAT-1, to disaster mitigation, planning / preparations... Sensing. Processed and distributed by RADARSAT International (RSI). Produced and provided... Sensing. Processed and distributed by RADARSAT International (RSI). Produced and provided... 5, which produced less radar backscatter. RADARSAT-1 data © Canadian Space Agency 1999... by CSAsupported missions, including RADARSAT-1 and the upcoming RADARSAT-2 program. As such..., which are greatly enhanced using RADARSAT-1 data. RADARSAT-1 data © Canadian Space Agency... Sensing. Processed and distributed by RADARSAT International. Produced and provided by...: Products and services generated: Leveraged RADARSAT-1 products and services sales: 48... Sensing. Processed and distributed by RADARSAT International. Produced and provided by... Agreement on the Development of RADARSAT Data Applications exemplifies the cooperation... INTERMAP RADARSAT-1 Lesson Plan for User Education and Training, which integrates RADARSAT... Sensing. Processed and distributed by RADARSAT International. Produced and provided by... infor mation regarding specific RADARSAT-1 appli cations, CSAheld RADARSAT-1 workshops in Halifax... by RADARSAT International. Produced and provided by MIR Télédétection Inc. RADARSAT-2: Next-Generation SAR Scheduled for launch in 2002, RADARSAT-2 will... Earth observation satellites. RADARSAT-2 will not only assure RADARSAT-1 users of data... public-private sector partnership, the RADARSAT-2 project will maintain Canada’s leadership...



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...………………………….................….46 Radarsat-2 and TerraSAR-X Remote Sensing Systems..................................................48 3.8.1 Radarsat-2...........................................................................................................48 v 3.9 3.10 3.8.1.1 Radarsat-2 Instrument...………………………………………………………...........………...95 5.2.1 SAR Data Description………………………………………….........…...........96 5.2.2 Radarsat-2 Data…………………………………………………......................97 5.2.3 TerraSAR-X Data………………………………………………...................…98... Contextual Analysis…………………………………………………….................….186 7.4.1 Segmentation…………………………………………………….………...…187 7.4.1.1 Radarsat-2 HH Image Segmentation……………….............….….…189 7.4.1.2 TerraSAR... of Radarsat-2 HH and TerraSAR-X HH Images……………………………...........................................................194 Comparison between Radarsat-2 and TerraSAR-X…………………………..………198 Area Estimation.............................................................................................................200 7.6.1 Flood Area Estimates.......................................................................................202 7.6.1.1 Radarsat... and flooding map.........................40 Radarsat-2 configuration.........................................................................51 Radarsat-2 SAR beam modes of... texture image for Radarsat-2 VV.......................................................................176 Supervised classification of Radarsat-2 HH produced.......................................187 Radarsat-2 HH texture image before and after segmentation................190 Radarsat-2 HH... Radarsat-2 and their benefits.......................................49 Radarsat-2 spacecraft and Antenna general characteristics.....................50 Radarsat-2 orbit characteristics......................... ........................................51 Radarsat... angles.....................................................................................................200 Error matrix for Radarsat-2 HH ultrafine Data.....................................201 Error... Radarsat-2; TerraSARX; TanDEM-X; COSMO-SkyMed; PALSAR Meteosat; Microwave Imager (aboard TRMM) Radarsat-2; TerraSARX; COSMO-SkyMed; PALSAR; AMSR-E Radarsat-2; TerraSARX; COSMO...-5 Kompsat Landsat-5 Landsat-7 NOAA Envisat Radarsat-2 Radarsat-1/-2 Radarsat-2 Radarsat-1/-2 Radarsat-2 Radarsat-1 Radarsat-1/-2 Radarsat-1/-2 Radarsat-1/-2 Radarsat-1 ERS-2 Envisat TerraSAR-X Cosmo-SkyMed... Radarsat-2, TerraSAR-X and COSMO SkyMed. Section 3.8 proposes brief details about the Radarsat... is in the following sections. 3.8.1 Radarsat-2 Radarsat-2, was jointly funded by the... in November 1995. Radarsat-2 has advanced technology over Radarsat-1 which includes: three... the Radarsat-2 system and their benefits. Table 3.4: Some features of Radarsat-2 and... image processing 3.8.1.1 Radarsat-2 Instrument System The spacecraft of Radarsat-2 is mainly composed... Radarsat-2 sensor electronics and the antenna are shown in Appendix 3.1. Table 3.5: Radarsat... Figure 3.9: Radarsat-2 configuration (Adapted from GLOBSAR, 2008). 3.8.1.2 Satellite Orbit Radarsat-2 has a sun... Modes and Polarizations Radarsat-2 has all of the Radarsat-1 imaging modes plus... illustrates the Radarsat-2 SAR beam modes of operation. The Radarsat-2 antenna directs... acquisitions 96 Chapter 5: Methodology 5.2.2 Radarsat-2 Data Two Radarsat-2 products were obtained during... information about Radarsat-2 product specifications can be found in Radarsat-2 Product Format... histograms. Radarsat-2_HH TerraSAR-X_HH Before projection After projection Figure 6.4: Radarsat-2 and... Preparation Radarsat-2 HH TerraSAR-X HH Before Geocorrection After Geocorrection Figure 6.6: Radarsat-2 HH... was used only for Radarsat-2 image classification. Radarsat-2 Variance texture Density slice... VV between Radarsat-2 and TerraSAR-X. The range values of C-band Radarsat-2 products... Radarsat-2 HH and TerraSAR-X HH imagery compared with dGPS data. WB Radarsat... Classification of Radarsat-2 Data Maximum likelihood supervised classification for Radarsat-2 HH and... image (B) Radarsat-2 HH product Figure 7.14: Supervised classification of Radarsat-2 HH produced... Mapping 7.4.1.1 Radarsat-2 HH Image Segmentation The scale parameter for the Radarsat-2 HH... within Radarsat-2 HH images and also between classified images of Radarsat-2 and... 7.21 Error matrix for Radarsat-2 HH ultrafine Data Radarsat-2 Reference Data Image..., variance and contrast for Radarsat-2 products. 3 C-Band Radarsat-2 and X-Band TerraSAR fine... Radarsat-1 image showing pre-flood water bodies, and red indicates the Radarsat..., 7 April 2010 (Radarsat-1); red – water bodies, 9 December 2010 (Radarsat-2) (source: Disaster Charter... calculating water texture regions for Radarsat-2. 3. C-Band Radarsat-2 and X-Band TerraSAR-X fine... Bangladesh using Radarsat imagery. Proceedings of the Final Symposium: Radarsat Advanced Data... Appendix 3.1: Radarsat-2 sensor electronics sub-system and antenna subsystem diagrams Radarsat-2 sensor...



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Foreign Competition in the Remote Sensing Satellite Industry J. Christian Kessler NorthRaven Consulting, Ltd. What are we going to do? ™ Who are major competitors in operating significant high resolution remote sensing satellites? ™ What kinds of satellites? How many? ™ Government support for or role in the satellite programs? ™ Regulation of commercial distribution of imagery & imagery products? Canada ™ RadarSat-1 (1999) MacDonald Dettwiller Associates & Canadian Space Agency ™ RadarSat-2 (2007) MDA & CSA ™ CSA 80% funding RadarSat-1; major funding for RadarSat-2 ™ MDA markets imagery ™ Canadian Gov’t regulates data distribution by customer France ™ SPOT series – 2, 4, 5 currently operational (E-O) ™ SPOT Image – partnership among CNES, IGN, & private industry; Belgium & Sweden partners ™ ORFEO consortium with Italy ™ Pleiades – 2 E-O 0.7m satellites 2009; Austria, Belgium, Spain, Sweden partners ™ SPOT Image – EADS now holds 81% ™ French Gov’t oversight of imagery distribution Germany ™ SARLupe – 5 satellite constellation; national reconnaissance, no commercial; OHB Systems ™ TerraSAR-X – Tandem & add’l planned; joint program Ministry of Ed. & Sci., DLR, & EADS Astrium ™ Imagery marketed by Info-Terra (EADS Astrium) ™ RapidEye – 5 satellite constellation, all commercial ™ Satellite Data Security Law – BAFA case-by-case review Israel ™ Ofek – national reconnaissance system (E-O) ™ EROS A1 & B – civil/commercial, (E-O), ImageSat International owns, operates, & distributes imagery ™ TECSAR – national reconnaissance & SAR technology demonstration – imagery distributed commercially Italy ™ COSMO-SkyMed 4 satellite constellation (SAR); Italian contribution to ORFEO ™ COSMO-SkyMed joint program among Ministry of Defense; Ministry of Education, Universities, & Science; ASI (Italian Space Agency) ™ Imagery distributed commercially by e-geos (Telespazio – ASI consortium) India ™ Complete space program; national reconnaissance & civil/scientific systems ™ Indian Space Research Organization (ISRO) – Antrix Corp. commercial arm ™ Operating 7 high resolution E-O systems; RISAT (SAR) scheduled 2009 ™ Antrix distributed imagery commercially – foreign internally & domestic externally Russia ™ Resurgent national space & satellite program ™ Resurs DK1 (2006) E-O civil satellite ™ SOVZOND JSC private firm (1992) commercial imagery distribution (Resurs DK1 & other) ™ SMOTR – Gazkom owned/operated 4 satellite constellation (2 SAR, 2 E-O) monitor oil & gas pipeline network South Korea ™ Korean Aerospace Research Institute (KARI) ™ KOMPSAT-1 & 2 operating (E-O) ™ Arirang-5 (SAR) scheduled 4th Q 2008 ™ Arirang-3 & 3A 0.7m E-O satellites scheduled 2009 & 2012 ™ Imagery marketed commercially thru foreign firms (e.g., SPOT Image) Taiwan ™ National Space Organization (NSPO) owns/operates Taiwan’s satellites ™ RocSat-2 (E-O) – commercial imagery distribution by SPOT Image ™ Argo – SSTL clone to supplement RapidEye constellation Japan ™ Advanced Land Observing Satellite (ALOS) JAXA civil/scientific (E-O) ™ ALOS imagery distributed commercially by Remote Sensing Technology Center of Japan ™ Information Gathering Satellites – national reconnaissance, 3 E-O & 2 SAR satellites China ™ Complete space program; systems for national reconnaissance, civil, & scientific purposes ™ Small Multi-Mission Satellites – 2 E-O operating, 1 SAR 2009 ™ China-Brazil Earth Resources Satellites (CBERS) – 2 operating, 2 planned; all E-O ™ No substantial role in commercial imagery market U.K. ™ No commercial distribution of remote sensing satellite imagery – Gov’t civil programs ™ Surrey Satellite Technology Ltd. (SSTL) ™ High resolution E-O micro-satellites for foreign civil programs ™ Technology transfer vs. COTS methodologies Themes ™ Shared national reconnaissance/civil systems vs. separate programs ™ Government-private partnerships vs. separate government & private programs ™ SAR vs. E-O; other spectra ™ How governments regulate imagery distribution – by operation, different forms of case-by-case



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..., E-SAR, SIR-C C/X, ALOS PALSAR, and RADARSAT-2), the number of publications in... R, Bernier M (2002) Quantitative analysis of RADARSAT SAR data over a sparse forest... RADARSAT images. In: Proceedings of the geomatics in the era of radarsat...



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2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2020 2021 2022 2023 2024 2025 2026 Landsat series (ETM+: 7)(OLI: 8)(TIRS: 8)(TM: 5) ERS series (AMI/SAR/Image: 2) RADARSAT series (SAR (RADARSAT): 1)(SAR (RADARSAT-2): 2) DMSP series (OLS: F-14 - 20)(SSM/I: F-14, F-15)(SSM/IS: F-16 - 20) IRS-1D (LISS-III (IRS), WiFS) POES series (AMSU-A: 15-18)(AMSU-B: 15-17)(AVHRR/3: 15-N') Terra (MODIS) NMP series (ALI: 1)(Hyperion: 1) SAC series (HRTC: C)(HSC: D/Aquarius)(HSTC: C) Envisat (ASAR, ASAR (image mode), MERIS) Aqua (AIRS, AMSR-E, AMSU-A, MODIS) FY-1 series (MVISR (10 channels): 1D) RESOURCESAT series (AWiFS: 1)(LISS-III (RESOURCESAT): 1)(LISS-IV: 1) ALOS (AVNIR-2, PALSAR) EPS series (AMSU-A: 1-3)(AVHRR/3: 1-3) COSMO Skymed series (SAR 2000: 1-4) current / approved TerraSAR-X (X-Band SAR) FY-3 series (MWRI: 3A-D) RapidEye (MSI) HJ series (HSI (HJ-1A): 1A) RISAT-2 (SAR-X) Meteor series (KMSS: N1, N2)(MSU-MR: N1, N2) TanDEM-X (X-Band SAR) GOMS/ELECTRO series (MSU-GS: N1, N2) RISAT-1 (SAR (RISAT)) Sich series (MBEI: 2) NPP (VIIRS) KANOPUS-V series (MSS (Roskosmos): N1)(MSU-200: N1)(PSS: N1) Sentinel-1 series (C-Band SAR: A) SABRINA (SAR (SABRINA)) SAOCOM series (SAR-L: 1A, 1B) NPOESS series (MIS: 2-4)(VIIRS: 1-4) MAPSAR series (SAR (MAPSAR): 1) MTG-I (imaging) series (FCI: 1-4) 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 RESOURCESAT series (AWiFS: 2)(LISS-III (RESOURCESAT): 2)(LISS-IV: 2)(WS LISS III: 3) KANOPUS-V series (MSS (Roskosmos): N2)(MSU-200: N2)(PSS: N2) ALOS-2 (PALSAR) HY-3 series (WSAR: 3A - C) planned / considered Sentinel-1 series (C-Band SAR: B, C) TerraSAR-X2 (X-Band SAR) RADARSAT series (SAR (RCM): 3-5) SAOCOM series (SAR-L: 2B (1), 2B (2)) GCOM series (SGLI: C1-3) GOMS/ELECTRO series (MSU-GS: N3) FY-3 series (MWRI: 3E-G) Sentinel-5 series (METimage: 1)



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Simulations of attitude determination for RADARSAT-I using GPS Line Moisan NavCom... the Canadian remote sensing satellite, RADARSAT-I. GPS Satellite e λ ∆ρ antenna A b antenna B baseline... the Canadian remote sensing satellite RADARSAT-I requires 0.05o (probability of 99... results for RADARSAT-I. 2 2 = σ angle 2 σ ∆Φ  180 o   q (k , k )  2  π  (degrees)   2 (4) Description and characteristics of RADARSAT-I where... the platform orientation of the RADARSAT-I on which GPS antennas are... called apparent horizon [Moisan, 1999]. RADARSAT-I is the Canada's first Earth... km above the Earth, the RADARSAT-I produces high-quality images of... sunlight reflected from the Earth, RADARSAT-I collects imagery of the Earth... web site, 1998]. Table 3 describes RADARSAT-I's orbit characteristics. The attitude angles... image resolution of 8 metres. Table 3: RADARSAT-I's orbital characteristics (adapted from CCRS... FOR RADARSAT-I This section provides a general description and characteristics of the RADARSAT..., and radio frequency interference between RADARSAT-I and GPS antennas. Temperature A LEO... the upper platform of the RADARSAT-I spacecraft bus, resulting in an... The S-band communication antenna on RADARSAT-I transmits and receives at 2230... vibrations Coordinate reference frame for RADARSAT-I The frequency and amplitude of... 2 describes the reference frames of RADARSAT-I and the (left-hand) local..., and ZTL axis towards Zenith. RADARSAT-I reference frame is represented with... transforms a local terrestrial frame into RADARSAT-I reference frame [Moisan, 1999]. Radiation... RADARSAT-I (R) and local terrestrial (TL). Figure 3 shows the reference frame of RADARSAT... speed vector is calculated from RADARSAT-I orbital elements. The ZR axis.... When a GPS satellite rises at RADARSAT-I horizon, the same GPS satellite... horizon plan RADARSAT-I GPS Satellite RADARSAT-I Figure 3: Reference frame for RADARSAT-I. o 2 Earth observer GPS satellites distribution for RADARSAT... be found in [Moisan, 1999]. RADARSAT-I latitude 66o to -17o , longitude... of visible GPS satellites for RADARSAT-I and an observer located in... by RADARSAT-I for the same period of time . During the period, RADARSAT... when RADARSAT-I was above the equator. The visible GPS satellites at RADARSAT... RADARSAT-I at the Earth observer horizon Earth Figure 5: Horizon plans for RADARSAT... of GPS satellites visible for RADARSAT-I and an observer in Quebec... computation takes into account the RADARSAT-I platform orientation where the GPS... average GPS satellite visible for RADARSAT-I is 7 and 6 respectively, with elevation... of visible GPS satellites for RADARSAT-I (apparent horizon) and an observer... Number of (%) visible GPS satellites (%) RADARSAT Earth RADARSAT Earth 4 5 6 7 8 9 10 11 12... for GPS antennas on the RADARSAT-I platform have been chosen. This... and tetrahedral configurations related to RADARSAT-I’s reference frame. Square configurations CA1... A B C D 1.6 m Figure 6: Upper platform of the RADARSAT-I spacecraft bus. Three configurations have... placed and anchored flat on RADARSAT-I platform. This choice has been... 6: Components of selected vectors in RADARSAT-I reference frame for the 3 chosen... 7: GPS antennas configuration chosen for RADARSAT-I. Table 5 presents the coordinates of... Table 5). The configurations chosen for RADARSAT-I take into account the available... GPS antenna configurations chosen for RADARSAT-I. The vector numbers correspond to... GPS antenna configurations chosen for RADARSAT-I. Square configuration 1 CA1 vectors: 1-2-3 trace... GPS satellites' positions observed by RADARSAT-I with respect to its position..., and takes into account the RADARSAT-I orientation platform. We assume no.... For the 3 GPS antenna configurations, RADARSAT-I apparent horizon was utilised with... used for RADARSAT-I’s platform are -29.8o and -4.95o, respectively. RADARSAT-I’s yaw... the requirement of 0.05o for RADARSAT-I, when images are taken. Better... precision. Table 8: Simulation results for RADARSAT-I. RADARSAT-I’S YAW, ROLL = -29.8o, PITCH... The Canadian remote sensing satellite RADARSAT-I has been chosen to analyse... the high speed of the RADARSAT-I, and possible radio frequency interference... communication antennas on board the RADARSAT-I. The RADARSAT-I’s platform was chosen to... and heat pipes on board RADARSAT-I would keep the temperature within... expected between GPS antenna and RADARSAT-I’s communication antenna because of the..., 1998]. The simulation analysis with RADARSAT-I has shown that the total... p. Nappert S., (1999), Communication personnelle, Groupe RADARSAT, Agence spatiale canadienne, St-Hubert....space.gc.ca/FRA/A_propos/Radarsat/rad1.html Canada Centre for....ccrs.nrcan.gc.ca/tekrd/radarsat/specs/radspecf.ht ml Spaceborne...