2026-04-05T12:40:56Zhttps://recercat.cat/oai/request
oai:recercat.cat:2117/1285982026-02-02T07:51:25Zcom_2072_1033col_2072_452950
RECERCAT author Di Simone, Alessio author Hyuk, Park author Riccio, Daniele author Camps Carmona, Adriano José 2017 Ships and ice monitoring is of key importance in numerous applications, such as maritime traffic control, prevention of illegal activities, climate change studies, and maritime security. In this work, the feasibility of near real-time ocean target detection from a constellation of spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) images is demonstrated by addressing the two following points: 1) simulation of the revisit time allowed by constellations of GNSS-R instruments; 2) derivation and implementation of an ocean target detector aimed at identifying inhomogeneous features inside the delay-Doppler map. The revisit time is computed by simulating a realistic mission as a function of the constellation size and the number of receiving channels of the GNSS-R instrument. The proposed ocean target detection algorithm consists of four steps - pre-processing, pre-screening, selection, and geolocation - and is validated using actual U. K. TechDemoSat-1 data.Peer ReviewedPostprint (published version) Restricted access - publisher's policy Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radionavegació Remote sensing Artificial satellites in navigation Global navigation satellite system-reflectometry (GNSS-R) Ocean target detection Maritime surveillance Sea state Constant false alarm rate (CFAR) Teledetecció Satèl·lits artificials en navegació Ocean target monitoring with improved revisit time using constellations of GNSS-R instruments Conference report