A Statistical Model for Multipath Reflection Effects of Antennas Mounted on Aircraft.
Abstract
A statistical model of the effects of multipath reflections for antenna arrays mounted on aircraft is developed to predict antenna system performance as a function of communication signal arrival angle. Each array element is assumed to have an electric field pattern that is a Gaussian random process with known statistics. These assumptions are used to find the statistic for the array. From these statistics the performance of the antenna of the system can be found using three performance measures for the array: the probability that the array gain is above a threshold; probability level curves to show what threshold function the gain will be above a specified percentage of the time; and the probability that the array gain will be above some threshold on an entire interval. These performance measures are evaluated for a specific array configuration for a set of assumed statistics and then plotted versus arrival angle. The results for different array variance are compared and the result is that higher variance results in poorer average antenna performance. The same measures are than evaluated for an array whose statistics are determined from actual measured data. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADA080369
Entities
People
- Jeffrey L. Frack
Organizations
- Air Force Institute of Technology