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Marine Engineering
Precision Hydrographic Surveys: Achieving ±2cm Accuracy in Sub-sea Projects
In modern marine engineering and river training works, data precision is not just a requirement; it is the foundation. Based on our recent "SV-A…
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RTK
RTK vs. PPK: Choosing the Right Positioning Method for Hydrographic Surveys
Introduction: In hydrography, achieving precise X, Y, and Z coordinates is the backbone of any project. Two primary methods dominate the industry: R…
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Positioning & RTK
Real-Time QC Monitoring in HYPACK: Monitoring HDOP and Fixed RTK for Accurate Surveying
Introduction: During a live hydrographic survey, watching the depth pings is not enough. You must monitor the quality of your positioning data in re…
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SVP
The Impact of Sound Velocity Profile (SVP) on Depth Accuracy
Introduction: In hydrographic surveys, echo sounders calculate depth based on the travel time of sound pulses. However, sound doesn't always tra…
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Vessel Offsets
The Critical Role of Vessel Offsets in Hydrographic Survey Accuracy
Introduction: In hydrographic surveying, when we measure water depth, our GNSS antenna is positioned high above the vessel while the echo sounder…
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