Sentinel-1 RFI Maps

Sentinel-1 is a space network of three* spaceborne C-band synthetic aperture radar (SAR) sensors developed and operated by the European Space Agency under the Copernicus Earth Observation programme. This website is the result of the joint effort of Aresys and ESA and it aims at providing viewers with information (maps and classification) about the radio-frequency interferences (RFI) cases as observed from  the C-band measurements made by Sentinel-1. Additional information/analyses would be required to assess the actual impact from these RFI into Sentinel-1 measurements and to determine whether the RFI in this website represent “harmful interference”in the sense of article 1.169 of the Radio Regulations.

Starting from June 2019, two maps are produced for each S-1 orbit cycle (12days) of each sensor: an RFI probability map and an interactive RFI map showing the main events. Additionally the RFI database of each orbit cycle can be downloaded.

For further details about how the RFI maps are generated, please refer to the technical specification.

* Two satellites are currently in orbit; the third satellite is planned for launch in 2023.

Sentinel 1-A Cycle 235

RFI events

Interactive map showing the main RFI events (>2500K) detected by Sentinel-1 during current orbit cycle. The colour/radius of the circle is proportional to the brightness temperature of the RFI event. Click on the circles to show additional information. 

RFI probability map

Map showing the probability of experiencing RFI of at least 1000K.

Sentinel 1-B Cycle 164

RFI events

Interactive map showing the main RFI events (>2500K) detected by Sentinel-1 during current orbit cycle. The colour/radius of the circle is proportional to the brightness temperature of the RFI event. Click on the circles to show additional information. 

RFI probability map

Map showing the probability of experiencing RFI of at least 1000K.