The first radar constellation for operational applications and services

The COSMO-SkyMed system is a constellation of four radar satellites for Earth observation for dual (civil and military) use. Its purpose is to monitor the globe for the sake of emergency prevention (management of environmental risks), strategy (defence and national security), and scientific and commercial purposes, providing data on a global scale.

COSMO-SkyMed is at the forefront of global technology and uses high-resolution radar to observe the Earth day or night, regardless of weather conditions. The fourth satellite was launched on November 5, 2010, and the complete constellation is now operational.

ST Electronics (Satcom & Sensor Systems) is the authorised reseller of COSMO-SkyMed images in Singapore.

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  • Constellation of 4 radar satellites
  • Orbit altitude of 620km
  • High revisit frequency
  • Active array X Band antenna with steerable beam
  • Wide bandwidth of 400MHz
  • Large memory capacity (300GB)

Imaging Capacity

Each satellite can acquire, daily:

  • Up to 75 SPOTLIGHT images
  • Up to 375 STRIPMAP or 150 SCANSAR images

The complete constellation can acquire a daily total of 1800 images

  • 1500 Wide Field
  • 300 Narrow Field
  • 560 GB/day

Interferometric capability

  • One of the best performances of COSMO-SkyMed system is the capability to carry out very accurate measurements based on phase signal (Interferometry) by using indifferently the satellites of the constellation. This guarantees a huge choice in terms of time intervals for change detection and coherence analysis (starting from 1 day intervals) and at the same time provides unprecedented revisit for applications based on the collection of a long time series of images.

Polarmetric products

  • Better target recognition
  • STRIPMAP mode in PINGPONG configuration
  • 15m resolution, 30km swath

Ground segment


Fixed & mobile (C-MAPS) terminals
World-wide network of 20 GPS stations improve geolocation accuracy
External stations (X band + S band for TT&C)

  • Kiruna
  • Cordoba

The system can satisfy a User Request in the case of the first level of SAR standard products in as little as 72 hours for the system working in routine mode, 36 hours for the crisis mode and 18 hours for the very urgent mode.


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