GEOS 657 - Lecture 10 GEOS 657 – MICROWAVE REMOTE SENSING SPRING 2019 Lecturer: F.J. Meyer, Geophysical Institute, University of Alaska Fairbanks;
[email protected] Lecture 10: SAR Image Acquisition Modes; Past, Current, & Future SAR Sensors; Basics of InSAR Image: DLR, CC-BY 3.0 UAF Class GEOS 657 AVAILABLE SAR SENSORS Franz J Meyer, UAF GEOS 657: Microwave RS - 2 Current and Future SAR Satellites TerraSAR-X & TanDEM-X PAZ SAR X-band Cosmo-SkyMed 1st and 2nd generation ERS-1/2 Envisat Sentinel RADARSAT-2 RCM C-band RADARSAT-1 JERS-1 ALOS-1 ALOS-2 SAOCOM L-band Seasat NISAR BIOMASS P-band 1978 1990 2000 2010 Present Day Future Franz J Meyer, UAF GEOS 657: Microwave RS - 3 1 GEOS 657 - Lecture 10 Current and Future SAR Satellites Accessible Through ASF TerraSAR-X & TanDEM-X PAZ SAR X-band Cosmo-SkyMed 1st and 2nd generation ERS-1/2 Envisat Sentinel-1 RADARSAT-1 RADARSAT-2 RCM C-band JERS-1 ALOS-1 ALOS-2 SAOCOM L-band Seasat NISAR BIOMASS P-band 1978 1990 2000 2010 Present Day Future Franz J Meyer, UAF GEOS 657: Microwave RS - 4 Resolution vs. Spatial Coverage • Medium (10m-class) resolution large-coverage systems: – Sensors: Current: ALOS-2; Sentinel-1; RADARSAT-2 Most of the medium-res Future: SAOCOM; NISAR; RCM; BIOMASS data are free or low cost (not ALOS-2 and R-2) – These sensors are suitable for applications such as: • Monitoring medium to large scale surface deformation (e.g., subsidence; slopes) • Assessing impacts of hazards (flooding; earthquakes) • General mapping and change detection • High (1m-class) limited-coverage resolution systems: – Sensors: Current: TerraSAR-X; TanDEM-X; COSMO-SkyMed constellation nd Future: PAZ SAR; COSMO-SkyMed 2 Gen High-res data is typically – These sensors are suitable for applications such as: more expensive • Mapping and analysis of urbanized environments (buildings, bridges) • Detecting localized hazards (sinkholes; small landslides) • As most high-res systems have higher repeat frequency tracking of things that change quickly Franz J Meyer, UAF GEOS 657: Microwave RS - 5 Free of Charge vs.