Tightly Integrated Inertially-Aided Post Processed Virtual Reference Station Technique for Marine Hydrography Learn about the Post Processed Virtual Reference Station (PPVRS) technique, which makes use of GPS network stations to determine atmospheric biases at the rover positions and which tightly integrates GPS with inertial data to provide a continuous, high-precision navigation solution with baselines of up to 100 km.. Read...   An Analysis of Vertical Position Error Estimation in TPE and CUBE for Hydrographic Surveying This paper serves to identify the effect of using Altitude in place of Heave. Read...   Hydrographic Surveying on the Ellipsoid with Inertially-Aided RTK Obtain accurate heave measurements using RTK GPS on the WGS-84 ellipsoid. Read...   Direct Comparison of the Motion Sensors' Performance from the 2005 Common Dataset Find out how POS MV compared against the other motion and heading sensors available in the marine industry tody. Read...   Error Estimation in Positioning and Orientation Systems Requirements for error estimation in hydrographic positioning and attitude systems and analysis of the effects on final hydrographic data quality. Read...   New Generation of POS, a Boost for Hydrographic Surveying - Article International Ocean Systems,   Sept/Oct 2004 New functionality and advantages of position and orientation systems for hydrographic surveying, particularly using POS MV. Read...