Relative code measurement, DGNSS

The term DGNSS – differential GNSS – today primarily refers to real-time relative code measurement.

Differential GNSS is a collective term for relative measurement that uses several GNSS receivers to reduce positioning uncertainty. Today, the term DGNSS is mainly used to describe relative measurement methods that are based on code measurement. DGNSS is based on a simpler principle and is less sensitive to interference than relative carrier phase peasurements, which are often refererred to as RTK for real-time measurements. Measurement with DGNSS thus also generally results in a higher measurement uncertainty than measurement with RTK technology.

SWEPOS DGNSS is a positioning service that is part of Lantmäteriet's open data

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