SAR Satalites

1. Sentinel-1A and Sentinel-1B (Sentinel-1): Part of the European Space Agency's Copernicus program, the Sentinel-1 mission consists of a pair of SAR satellites (Sentinel-1A and Sentinel-1B) that provide continuous all-weather, day-and-night radar imaging.

2. TerraSAR-X and TanDEM-X: These are German radar satellites operated by the German Aerospace Center (DLR) in partnership with Airbus Defence and Space. TerraSAR-X and TanDEM-X work together to create high-resolution SAR images and generate precise digital elevation models of the Earth's surface.

3. RADARSAT-2: A Canadian SAR satellite operated by the Canadian Space Agency. It provides radar imagery for various applications, including environmental monitoring, disaster management, and maritime surveillance.

4. Cosmo-Skymed: An Italian constellation of SAR satellites designed for dual-use applications, including civil and military uses. It consists of four satellites: Cosmo-Skymed 1, 2, 3, and 4.

5. ALOS-2 (Advanced Land Observing Satellite 2): A Japanese SAR satellite operated by the Japan Aerospace Exploration Agency (JAXA). ALOS-2 is used for various applications, including disaster monitoring, forestry, and agriculture.

6. RADARSAT Constellation Mission (RCM): A Canadian SAR satellite mission consisting of three identical satellites: RADARSAT-2, RCM-1, and RCM-2. RCM provides frequent radar imaging of Canada and other regions.

7. ICEYE: A private Finnish company operating a constellation of SAR microsatellites. ICEYE's small SAR satellites are known for their agility and ability to provide rapid revisit times.

8. COSMIC-2 (Constellation Observing System for Meteorology, Ionosphere, and Climate-2): While primarily a mission for atmospheric and ionospheric studies, COSMIC-2 includes a GNSS-RO (Global Navigation Satellite System Radio Occultation) payload, which can be used for SAR processing to obtain information about surface properties.

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