Accession Number:
AD0529359
Title:
Experiments and Models in Prairie Smoke
Descriptive Note:
Final technical rept. 1 Sep 1971-31 Oct 1973
Corporate Author:
AERONOMY CORP CHAMPAIGN IL
Personal Author(s):
Report Date:
1973-12-15
Pagination or Media Count:
82.0
Abstract:
This final report describes additional experiments to study the morphology of artificial spread F ASF irregularities by measuring the scintillation of VHF and UHF signals transmitted through the disturbed region from geostationary and orbital satellites. Scintillation depth, structure size and drift velocity measurements are described for Prairie Smoke IV, and are related to heater power. Detailed correlation analysis shows the presence of a smaller structure in ASF of about 10 meter size. The results of these experiments are combined into a model for scintillation and spread F. The report also contains recommendations on the effect of antenna power patterns and beam steering on field-aligned VHF scatter and on models for D-region absorption.
Descriptors:
- *IONOSPHERIC DISTURBANCES
- *RADAR TRACKING
- *RADIO TRANSMISSION
- ABSORPTION
- AMPLITUDE
- BEAM STEERING
- CORRELATION TECHNIQUES
- ELECTRON DENSITY
- HEATING
- IONOSPHERE
- LINE OF SIGHT
- MATHEMATICAL MODELS
- RADAR ANTENNAS
- RADAR CROSS SECTIONS
- RADAR TRANSMITTERS
- RADIO SIGNALS
- RADIOFREQUENCY
- SATELLITE TRACKING SYSTEMS
- SCATTERING
- SCINTILLATION
- SYNCHRONOUS SATELLITES
- ULTRAHIGH FREQUENCY
- VERY HIGH FREQUENCY
Subject Categories:
- Active and Passive Radar Detection and Equipment
- Radiofrequency Wave Propagation
- Non-Radio Communications