RECEIVER-INDICATOR AERIALS OF SATELLITE NAVIGATION SYSTEMS
It is normally recommended that antennas for satellite navigation systems be placed at the highest point (i.e., at the top of the mast) so that no shadow sectors affect signal reception from satellites. This type of installation, however, can only be done in port using a crane and is the least desirable from the standpoint of vibration and maintenance. The author describes the results of a test aboard a hydrographic vessel, where the antennas for three satellite navigation systems were instead installed by ship personnel themselves on the uprights of the handrailing of the bridge deck. Antenna heights were about 2m, half that of the radar antennas. The absolute number of observations rejected owing to this placement of the antennas was found to be negligible, one or two a day.
- Journal article; DTIC distribution restrictions apply
- Baskin, A S
- Publication Date: 1989
- Pagination: 2 p.
- TRT Terms: Antennas; Building; Facilities; Height; Installation; Navigational satellites; Satellite navigation systems
- Subject Areas: Construction; Maintenance and Preservation; Marine Transportation;
- Accession Number: 00657655
- Record Type: Publication
- Source Agency: Maritime Technical Information Facility
- Files: TRIS
- Created Date: Jul 21 1994 12:00AM