GNSS (in fact it usually means GPS) is at the moment the fundamental means of positioning for any variants of navigation. However some attributes of it can be not sufficient for every users or in some tasks, so there are many cases when this system needs support. From the mariner point of view pure GPS properties perfectly fulfils expectations of sailors at the open sea, however there are lot of cases, when accuracy of the system are not sufficient. Besides of accuracy other performance characteristics, for example availability, risk of jamming etc. are important. As the “medicine” for this, differential version of GPS is suggested. At the moment hundreds of DGPS reference stations exist all over the world, but simultaneously other augmentation systems provide services for example European overlay for GPS (European Geostationary Navigation Overlay Service - EGNOS). But over 30 years of DGPS use at sea causes that sailors prefer it than EGNOS.
Has EGNOS its own place in maritime navigation?
2015-10-01
1424035 byte
Conference paper
Electronic Resource
English
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