A Digital Polarimeter for Measuring the Faraday Rotation Using a Beacon from a Geostationary Satellite.
Abstract
The digital polarimeter described was designed to measure continuously and record automatically the rotation angle of a linearly polarized wave. The polarization rotation is caused by a phenomena known as the Faraday effect. The digital polarimeter uses a dual phase-lock-loop receiver which directly measures the phase difference between the right- and left-hand circular components of the received linearly polarized signal. This approach provides the optimum in sensitivity and dynamic range. A digital multicycle phase meter measures the phase difference between amplified and down converted circular components. The measured phase is then formatted and recorded on a digital magnetic tape recorder for automatic computer analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA012168
Entities
People
- F. J. Gorman Jr.
Organizations
- United States Army Communications-Electronics Command