![]() ![]() SBAS (WAAS, EGNOS, MSAS), Beacon, NTRIP, Direct IP, IALA are free services, with various coverage.Methods of DGPS correction / Augmentation can be Glonass is also available as a backup/augmentation in some GPS receivers, but at the moment not available as standalone handheld units. Many such devices also combines the various GNSS technologies, such as combined GPS/ Glonass receivers and evaluate the different carrier signals. Professional GNSS: the GNSS is designated for massive or accurate geographic survey.Smartphone: probably the most abundant GPS device these days.Mobile Phone: the GPS is included in a mobile phone device. ![]() ![]() Navigator: the GNSS includes a screen with maps and software for turn-by-turn navigation assistance.Recreational: the GPS receiver can either simply deliver a geographic position for another device or display it on a simple screen with no navigation facility.Data Logger: the GNSS includes an automatic geographic position logging system with extraction possibility to another electronic device. ![]()
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