Accession Number : ADA955915

Title :   Digital SPS Phase Control Using Traveling Wave Interferometry,

Corporate Author : NOVAR ELECTRONICS CORP BARBERTON OH

Personal Author(s) : Ott, James H. ; Rice, James S.

Report Date : OCT 1978

Pagination or Media Count : 61

Abstract : After an in-depth quantitative analysis, it is shown that complete earth-based control of SPS beam forming and pointing can be achieved with relatively simple instrumentation requiring only three ground based receivers at the rectenna. The uplink bandwidth needed is small. Phase comparison techniques exploiting the properties of 'traveling wave interferometry' are used. Separately, analysis shows that digital beam pointing with 8 bits of resolution is essentially identical to linear phase pointing and easily maintains a beam pointing resolution mech better than 140 meters at the rectenna. U/A Reports. (rh)

Descriptors :   *BEAM STEERING, *INTERFEROMETRY, *TRAVELING WAVES, AIMING, BANDWIDTH, BEAM FORMING, COMPARISON, CONTROL, DIGITAL SYSTEMS, GROUND LEVEL, INSTRUMENTATION, LINEAR SYSTEMS, PHASE CONTROL, PHASE(ELECTRONICS), QUANTITATIVE ANALYSIS, RESOLUTION, UPLINKS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE