Shipboard towers for Global Positioning System antennas |
| |
Authors: | C David Chadwell |
| |
Institution: | Marine Physical Laboratory, Scripps Institution of Oceanography, University of California, San Diego 9500 Gilman Drive, La Jolla, CA 92093-0205, USA |
| |
Abstract: | Two 12.2 m-high towers for mounting Global Positioning System (GPS) receiver antennas were designed and constructed to provide millimeter-level stability while maintaining portability and accessibility to satellites and deck spaces. A combination of guys and a 3-m horizontal strut provide roll and pitch stability of 2–3 mm observed from 0.1 seconds to 12 days using a combination of GPS and optical/laser devices. The shipboard antenna mounts connect sub-aerial GPS positioning to underwater acoustic ranging that determine the centimeter-level location of seafloor transponders. Observed annually, these seafloor geodetic positions measure seafloor crustal motion for geophysical studies. |
| |
Keywords: | GPS Attitude Positioning |
本文献已被 ScienceDirect 等数据库收录! |
|