Balloon Measurements of TE- and TM-Polarization in LF Waves from an Airborne Transmitter.
Abstract
Balloon instrumentation was used to identify and measure Transverse Electric (TE) and Transverse Magnetic (TM) polarization components of a 44.0 kHz wave from an ARC-96 trailing-wire antenna on an EC-135 aircraft operating at an altitude of 31,000 feet. The 800 mile (1300 km) propagation path was sunlit. At an altitude of 70,000 feet the aerodynamically shaped balloon-borne receiver package was released to free-fall, in order to obtain axis stabilization. The azimuthal directivity pattern of the transmitter was measured, the relative amplitudes of the TE and TM components were determined as functions of altitude, and a preliminary estimate of the atmospheric noise background was obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1975
- Accession Number
- ADA020545
Entities
People
- Edward A. Lewis
- George C. Hirst
- Robert P. Harrison
Organizations
- Air Force Cambridge Research Laboratories