Читать книгу Surface Displacement Measurement from Remote Sensing Images - Olivier Cavalie - Страница 25

ICEYE-X1, launched in January 2018, is the first SAR microsatellite of Finland’s operational commercial constellation Iceye Ltd, a startup company from Espoo. The ICEYE-X1 cube (70 cm side) weighs under 100 kg, which is less than a twentieth of Sentinel-1. This size reduction produces a strong reduction in the cost too. The global imaging constellation will consist of 18 small satellites, allowing less than a few hours for revisit. ICEYE’s satellite constellation in the X-band is growing, with additional spacecraft being produced and launched each year: in December 2018, ICEYE-X2 was launched. The ICEYE-X3 payload, launched on May 5, 2019, was a demonstration mission, dedicated to the US Army. ICEYE-X4 and -X5 were launched on July 5, 2019, with a Soyuz-2-1b rocket, and ICEYE-X6 and -X7 were launched on September 28, 2020. ICEYE-X8 and -X9 followed in January 2021. The Finnish company launched four additional SAR satellites at the end of 2020 and planned to launch an additional eight in 2021. The company offers X-band SAR data in several imaging modes, including very high resolutions in single-look complex and ground range detected image formats. ICEYE’s satellites are capable of imaging in stripmap, spotlight and ScanSAR modes in VV polarization.

Data access: See https://www.iceye.com. The Finnish New Space Economy company ICEYE is now providing radar imaging data from its commercial SAR satellite constellation to the International Charter “Space and Major Disasters” at no cost for use in monitoring and response activities.