MICROWAVE POINTING VARIATIONS AND ANGLE MEASUREMENTS,
Abstract
Tests were performed to obtain simultaneous data pertaining to the long-term and short-term signal angle-of-arrival variations at 9.4, 18.8, and 35 Gc/s frequencies being transmitted over the same path as detected by three existing systems; and to perform angle determinations using the 35 Gc/s system. Analyses of data indicate that the short-term variations are greater with the 35 Gc/s system than with the 18.8 Gc/s system, but are more symmetrical about the long-term mean; that the long-term variations are shortest with the 35 Gc/s system; that both short-term and long-term variations with the 9.4 Gc/s system are much greater than the other systems; and that angle determinations within a few arc seconds are achievable when the 35 Gc/s interferometer is used. Some correlation with temperature is indicated, and an explanation for the cause of short-term effects and the relative influence of long-term variations on the angle measurements is discussed. No explanation is offered for the apparent reduced sensitivity of the higher frequency systems to either long-term variations or atmospheric parameters. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1966
- Accession Number
- AD0630249
Entities
People
- Peter J. Cervarich