DGPS, Differential GPS Where a fixed ground station listens to the GNSS signals and establishes highly accurate corrections which it uses to help other ground stations, e.g., for surveying. Related Terms 100 EPC, Article 2G, 2.5G, 2.75G, 3G, 4G, 5G 337, Section 3GPP 6-Sigma (6-σ)
