the UK Vertical Offshore Reference Frame - EuroSDR

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Why is VORF needed? • Continuing developments in GNSS • LIDAR and multibeam technology • Global trends in datum unification, harmonisation of charting, automation in navigation and data acquisition
Why is VORF needed: Current practice for bathymetry data processing Tide gauge observed tide (and time) Problems: Complexity – onshore and offshore operations, time Latency – <strong>the</strong> process takes time and hence is expensive Use co-tidal chart derived from depth measurement (and time of observation) survey vessel Tidal correction Charted depth Low accuracy – co-tidal charts have limited resolution and are derived from limited data; seabed gauges are expensive Inconsistent – practices using Chart Datum are poorly defined and can lead to discrepancies LAT … or use seabed gauge
Page 1 and 2: A Tale of Many Datums: the UK Verti
Page 3 and 4: What is VORF? • A high resolution
Page 5: Basic VORF functionality: Transform
Page 9 and 10: Data sources (1): . Permanent . Ser
Page 11 and 12: Data sources (3): Satellite Altimet
Page 13 and 14: Data sources (5): OSGM05 - the late
Page 15 and 16: Modelling: Interpolation of surface
Page 17 and 18: Modelling: Chart Datum • VORF uni
Page 19 and 20: Modelling: Chart Datum offset from
Page 21 and 22: Science results (1): Mean Sea Level
Page 23 and 24: VORF software functionality • Tra
Page 25 and 26: Ultra Rapid Point in Polygon (PiP)
Page 27 and 28: Applications: Cost and Efficiency o
Page 29 and 30: Applications: Dealing with non-Char
Page 31 and 32: Status and initial test results •
Page 33 and 34: Interpolating/predicting sea level
Page 35 and 36: First Sea Trials • Survey carried

the UK Vertical Offshore Reference Frame - EuroSDR

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