Adaptive Antenna Control (AAC) Program. (Revision)
Abstract
A theoretical and empirical investigation of angle diversity for application on Defense Communications System (DCS) tropospheric scatter communication links has been completed. This report summarizes the principal areas of this investigation. The major results are: Development of a new propagation prediction model applicable at frequencies up to 5 GHz. Development of a modem prediction model for calculating the bit error rate and fade outage on a fading multipath channel for the MD-0918/GRC modem. A trade-off analysis to determine the optimum angle diversity system. Design and development of a 4.4 - 5.0 GHz (C-Band) angle diversity feedhorn which gives a beam separation within about 1/2 dB of optimum. Theoretical and empirical evidence that angle diversity has a performance advantage over frequency diversity. Discovery of reduced correlation effects in angle diversity when wideband signals are employed. Development of a methodology and a statistical base for development of future angle diversity systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA103385
Entities
People
- Peter Monsen
- Steen A. Parl