Data Link Validation Program.
Abstract
The primary purpose of this investigation was to determine the effects of delivery system emplacement inaccuracies and relay antenna height on radio frequency (RF) sensor data link performance. The results indicate that, for this type of data transmission system, the effects of emplacement errors from a selected or optimum point (OP) was dependent on whether radio line-of-sight exists between the selected or 'optimum' sites. If RF line-of-sight was at least partially available, increasing the antenna height to 30 feet normally resulted in a reliable link. Throughout these tests, reliable sensor data links were established in hilly terrain wherever firm RF line-of-sight conditions existed. The tests demonstrated that reliable sensor-to-monitor links operated in hilly terrain can be established for distances up to 21 Km, and that reliable sensor-to-monitor links using multiple relays can be established for distances up to 76 Km. When operating in flat terrain, the tests demonstrated that the sensor-to-monitor data links performed reliably, even if RF line-of-sight did not exist for distances up to 29 Km. When the standard sensor antenna is used as opposed to the low loss antenna, the reliability of the link is degraded significantly except for distances of about 9.5 to 16.4 Km.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1977
- Accession Number
- ADA041236
Entities
People
- Donald J. Blue
- Robert G. Witham
- Steven A. Bleier
Organizations
- United States Army Communications-Electronics Command