GNSSVerfahren

GNSSVerfahren refers to the methods and techniques used to determine precise positions using Global Navigation Satellite Systems. These systems, such as GPS, GLONASS, Galileo, and BeiDou, rely on a constellation of satellites orbiting the Earth to provide positioning, navigation, and timing services. GNSSVerfahren encompasses a range of approaches to process the signals received from these satellites, aiming to achieve different levels of accuracy and efficiency.

One fundamental GNSSVerfahren is standalone positioning, where a single receiver calculates its position based on the signals from multiple satellites. This method typically offers moderate accuracy. For higher precision, differential GNSS (DGNSS) techniques are employed. DGNSS involves using a fixed base station with a known, precise location to correct errors in the measurements of a mobile rover receiver. These errors can arise from atmospheric delays, satellite clock inaccuracies, and orbital errors.

Another important category of GNSSVerfahren is Real-Time Kinematic (RTK). RTK utilizes carrier phase measurements from GNSS satellites, alongside carrier phase differences between a base station and a rover, to achieve centimeter-level accuracy in real-time. Post-processing kinematic (PPK) is similar to RTK but involves processing the collected data after the survey is completed, offering potentially higher accuracy as it allows for more thorough data analysis. Precise Point Positioning (PPP) is a single-receiver technique that uses precise satellite orbit and clock data, often obtained from international monitoring networks, to achieve high accuracy without the need for a nearby base station. The choice of GNSSVerfahren depends on the required accuracy, cost, and the application, which can range from everyday navigation to surveying, agriculture, and scientific research.