A TRIAL TO INVESTIGATE AIR-TO-AIR U.H.F. AND MICROWAVE PROPAGATION AT LOW ALTITUDE
Abstract
Flight trials in support of a Weapons Department research programme were conducted over varying types of terrain and varying sea states, to determine the suitability of U.H.F. or X-band in an air-to-air radio link capable of carrying television and command data. The results of the over sea trials accorded well with theory except that fading nulls at U.H.F. could be greater than the theoretical value. Analysis of results of over land flights indicated that at X-band most fades, and at U.H.F. many fades, could be attributed to signal reflection from metallic objects. Differences in the fading characteristics observed on various headings were attributed to the disposition of reflecting objects and to terrain screening. The results indicate that X-band offers the better performance by virtue of lower fade depths and briefer outages. Countermeasure susceptibility, aerial installation problems and costs are not considered.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0396372
Entities
People
- H. L. Spong
- T. E. Wynne
Organizations
- Royal Aircraft Establishment