Editorial Advisory Board PNT Q&A: Advancing bathymetry

November 20, 2020  - By

Which recent GNSS/INS innovations have been most helpful in advancing bathymetry? Which upcoming ones will be?

Headshot: Miguel Amor

Miguel Amor

“Development of PPP removed reliance on shore-based RTK base stations, allowing operation almost anywhere on the oceans. Continued performance improvement in FOG and MEMS INS, along with bathymetric sensors, provide cost-effective solutions while also providing more accurate seabed maps. The future will see increased PPP accuracy with faster convergence and continued improvement in INS, coupled with increased resolution of bathymetric sensors, leading to more of the oceans mapped using autonomous platforms.”
Miguel Amor, 
Hexagon Positioning

Bernard Gruber

Bernard Gruber

“While GNSS has been a clear contributor to Earth mapping, it is an altogether different dilemma to solve ‘submarine topography’ mapping. Given recent developments in the IMU and lidar markets, one can readily utilize these sensors to correct for roll, pitch, and yaw, and produce digital maps, respectively. Combining these sensors with GNSS receivers, mounted on a drone for example, can allow for precise measurements in areas of tidal shifts or dynamic variations of water depth.”
Bernard Gruber,
Northrop Grumman

About the Author: Tracy Cozzens

Senior Editor Tracy Cozzens joined GPS World magazine in 2006. She also is editor of GPS World’s newsletters and the sister website Geospatial Solutions. She has worked in government, for non-profits, and in corporate communications, editing a variety of publications for audiences ranging from federal government contractors to teachers.