| Title | SAR interferometry with the RADARSAT Constellation Mission |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Dudley, J P ;
Samsonov, S V |
| Source | Geomatics Canada, Open File 67, 2022, 28 pages, https://doi.org/10.4095/329396  Open Access |
| Image |  |
| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | digital; on-line |
| File format | pdf |
| Subjects | geophysics; Science and Technology; remote sensing; satellite imagery; radar methods; deformation; models; RADARSAT Constellation Mission (RCM); synthetic aperture radar surveys (SAR); change detection;
monitoring; Partnerships; Automation; Products; Methodology |
| Illustrations | tables; plots; satellite images; sketch maps; digital elevation models; bar graphs |
| Program | Canada Centre for Remote Sensing People Support and Leadership |
| Released | 2022 01 11 |
| Abstract | The RADARSAT Constellation Mission (RCM) is Canada's latest system of C-band Synthetic Aperture Radar (SAR) Earth observation satellites. The system of three satellites, spaced equally in a common
orbit, allows for a rapid four-day repeat interval. The RCM has been designed with a selection of stripmap, spotlight, and ScanSAR beam modes which offer varied combinations of spatial resolution and coverage. Using Differential Interferometric
Synthetic Aperture Radar (DInSAR) techniques, the growing archive of SAR data gathered by RCM can be used for change detection and ground deformation monitoring for diverse applications in Canada and around the world. In partnership with the Canadian
Space Agency (CSA), the Canada Centre for Mapping and Earth Observation (CCMEO) has developed an automated system for generating standard and advanced deformation products and change detection from SAR data acquired by RCM and RADARSAT-2 satellites
using DInSAR processing methodology. Using this system, this paper investigates four key interferometric properties of the RCM system which were not available on the RADARSAT-1 or RADARSAT-2 missions: The impact of the high temporal resolution of the
four-day repeat cycle of the RCM on temporal decorrelation trends is tested and fitted against simple temporal decay models. The effect of the normalization and the precision of the radiometric calibration on interferometric spatial coherence is
investigated. The performance of the RCM ScanSAR mode for wide area interferometric analysis is tested. The performance of the novel RCM Compact-polarization (CP) mode for interferometric analysis is also investigated. |
| Summary | (Plain Language Summary, not published)
The RADARSAT Constellation Mission (RCM) is Canada's latest system of Earth observation satellites using Synthetic Aperture Radar (SAR). The system of
three satellites offers high temporal resolution imaging with varied combinations of spatial resolution and coverage. Data gathered by RCM can be used for change detection and ground deformation monitoring for diverse applications in Canada and
around the world. In partnership with the Canadian Space Agency (CSA), the Canada Centre for Mapping and Earth Observation (CCMEO) has developed an automated system for generating standard and advanced ground deformation and change detection products
from data acquired by the RCM and RADARSAT-2 satellites using an interferometric processing methodology. Using this automated system, this paper investigates the interferometric properties of four new and novel features of RCM: The impact of the high
temporal resolution of the four-day repeat cycle of the RCM on interferometric data quality is tested. The effect of the higher precision radiometric calibrations on interferometric products is investigated. The compatibility of the RCM ScanSAR mode
for wide area interferometric analysis is tested. The use of the novel RCM Compact-polarization (CP) mode for joint polarimetric as well as interferometric analysis is also investigated. |
| GEOSCAN ID | 329396 |
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