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Development of a real-time DGPS system in the centimeter range
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2002
Year
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Real-time MonitoringEngineeringLocation EstimationMeasurementGlobal Navigation Satellite SystemPositioning SystemEducationSatellite ProcessingPrecision NavigationNavigation (Computer Networking)Navigation (Cognitive Neuroscience)Differential Navigation SystemSatellite MeasurementCalibrationData AcquisitionSystems EngineeringPositioningInstrumentationNavigation (Marine Navigation)Real-time Dgps SystemGeodesyTime-of-flight CameraCarrier PhaseComputer EngineeringSignal ProcessingSatellite Navigation SystemsSensor CalibrationAerospace EngineeringCarrier Phase Observations
Based on carrier phase observations of GPS a differential navigation system is developed delivering real-time accuracies in the centimeter range with an update rate of not smaller than one Hz. Central point in the development is the method of determining carrier phase ambiguities on-the-fly, since in this project primarily the DGPS system in a stand-alone operation is considered, i.e. without means of other sensors. Performance and limits of such a high-precision system are tested in field, in particular robustness, reliability and integrity of the carrier phase ambiguity resolution on-the-fly. Within a hydrographic experiment the capabilities of the OTF-algorithm are demonstrated using C/A code and L1 phase data only.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>