ATS-6 Measurements during AVEFRIA.
Abstract
An experimental program was conducted to measure dispersive-phase and amplitude perturbations caused by the AVEFRIA shaped-charge barium release series. 360- and 1550-MHz signals from the ATS-6 geostationary satellite were used for those measurements. A novel technique, whereby the ATS-6 communications subsystem was phase locked to ATS-6 rf beacon, provided a 3950-MHz reference signal for the dispersive phase measurements. Four occultations were achieved during the two AVEFRIA events. Durations of strong effects were as long as four minutes, and some perturbations lasted until T + 20m during one occultation. The greatest amplitude fluctuations measured were +5 to -10 dB at 360 MHz. Maximum estimated phase excursions were about 1 radian at UHF, which corresponds to electron content changes of 4 x 10 to the 10th power electrons/sq cm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA082192
Entities
People
- Alan A. Burns
Organizations
- SRI International