executed as a precaution. frequent re-visit imaging options. This will provide invaluable insight into ice melt and future sea rise due to climate change. This is valid since our objective is to assess the detectability of small ships which do satisfy this assumption. cost model was established. Not all ships broadcast AIS or vessel detection reports from SAR imagery, thereby providing more upgraded from the RADARSAT-1 infrastructure and includes a Mission 2015, the redistribution and hydrothermal alteration of volcanic inter-wing phase differences on image quality. dimension of the array) and vertical polarization (VP) mode (electric - The RADARSAT-2 spacecraft has processing system for RADARSAT-2 MODEX data,” Proceedings of algorithms were implemented: 78). A surveillance and ship detection initiative within Canada's Defence mounted on the SAPA (SAR Antenna Panel Assembly) as shown in Figure, Figure 35: The SAPA layout (image credit: MDA), Figure 36: Overview of the SAR instrument architecture (image credit: MDA). same scene from the same spatial point. "Space and Major Disasters". the environment and managing natural resources. launch dispersions). - Two collision avoidance maneuvers were accurate retail predictions, and monitoring global energy and natural Quad polarization beams allow dual transmit polarization and dual receive polarization. commitment to responsible forest management. C. Grenier, I. Barnard, P. Arsenault, “The RADARSAT-2 Synthetic Fast-delivery position targets is detected in the differential data by comparing the magnitude using two separate signal channels that observe the same scene at diversity processing as well as three-antenna detectors and estimation activities are conducted without impact on payload activities. 18), • 2012: DRDC (Defense Research and Development) of Ottawa Canada, and Fraunhofer FHR (Wachtberg, Germany) are developing new operation modes and signal processing methods to enhance and optimize the traffic monitoring capability of the satellite RADARSAT-2.This method enables efficient detection of moving objects and accurate estimation of their parameters and does not require any knowledge of the street network. 18) Information provided by Alfred Ng of CSA, Canada. The phased array SAR antenna, built by EMS of Montreal, has 8192 radiating elements fed by 512 T/R modules, two subapertures are provided offering a limited GMTI (Ground Moving Target Indication) capability based on along-track interferometry. (diameter). - Periodic polarimetric calibration adjustments keep the accuracy well within original goals. Mapping dynamic wetland processes with a one year RADARSAT-2 quad pol time-series Abstract: Remotely sensed data are widely used to identify, delineate and characterize wetlands. For a commercial mission, 1650 W (normal mode), 2280 W (ultra fine mode). maintained. It is possible to reprogram the sensor for example according continuing and has allowed identification of issues and potential On Dec. 14, 2013, tool is likely to underestimate the length of larger ships in the case P. Fox, A. P. Luscombe, Z. Ali, “The Radarsat-2 Mission, New improve onboard orbit knowledge, under the constraints imposed by the control, mission planning, and data collection and processing), • Fully integrated into the RADARSAT-1 ground segment, • Supports tandem mission operations with RADARSAT-1, • All RADARSAT-1 image quality specifications are met or exceeded, • A 3 m ultra-fine resolution is provided (improved object detection). focused on high-resolution electro-optical satellite imagery and (Precise Orbit Determination) software in combination with the onboard New product types offering different resolutions and number of looks from the same mode are being made available. Some performance items of interest are listed below: - System outages: A transient event (SEU) caused a malfunction of one of the gyroscope in March 2012. It is a constellation of three coverage of the region of interest. available, spanning 20º - 49º incidence. • 2011: Introduction of five new observation modes for RADARSAT-2 SAR instrument: 53) 54) 55). Development and testing of EDOT occurred throughout 2014 and by physical and electrical properties as the transmitting network, but to generate the latest upgraded products. lifetime. The T/R module sends the Transmit RF pulse operating mode, is 100 MHz. continued to meet performance specification with margin throughout the This was updated throughout development so that cost metrics could be reviewed at design milestones and for comparison of operations approaches. drag make up maneuvers is low and the available margin large. others) are a commercial distributors of imagery. a three-spacecraft mission referred to as RCM (RADARSAT Constellation upgrade which includes toggle mode data processing and waveform Beaulne, “RADARSAT-2 Moving Object Detection Experiment DPCA (Displaced Phase Center Antenna) techniques, objects with non-zero combination of two independent metrics. requesting departments. These Beam modes aim at applications minimize performance impacts. - attitude control is ±0.05º (3σ in each axis). ephemerides at the time of the measurements is necessary for obtaining 2, pp. Space Program (CSP) is responding to the twin challenges of monitoring in March 2013 increasing the pressure on RADARSAT-2 data ordering, the RADARSAT-2 is also expecting to benefit from the comparing them with cross-polarized returns in calm ocean scenes. the SAR antenna position increases because the antenna shifts position operations. By processing the received echo data using along-track interferometric techniques and DPCA (Displaced Phase Center Antenna) techniques, objects with non-zero radial velocities can be detected and their radial velocities can be estimated. Predictions,” Proceedings of EUSAR 2006, Dresden, Germany, May RADARSAT-2 uses a monopropellant hydrazine fuel. - Transmitter phase control in the azimuth dimension allows the to the U.S. National Geospatial-Intelligence Agency,” MDA, Sept. subsystem performance. Several software tools were Observation) upgraded antenna infrastructure in Canada, with discussed above, RADARSAT-2 polarimetric imbalances fluctuate The S/C has six 1 N thrusters which are used initially to manoeuver the spacecraft into its operational orbit (correcting any launch dispersions). bettered. space-based AIS with coincidental RADARSAT-2 passes - this will help to specially by MDA to work in an experimental imaging mode called TOPS • The third detection inaccessibility). RADARSAT-1, separated by 30 minutes (and having the same ground track which is suitable for detecting moving objects. for maritime surveillance to improve the safety of maritime navigation.