A Model for High Frequency Radar Auroral Clutter

A model is developed to permit estimation of the effects of irregularities in the auroral ionosphere in producing clutter experienced by Over-The Horizon radars operating at high geomagnetic latitudes. The model is used on various sources of data, including auroral radar (HF, VHF, UHF), vertical inc...

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Bibliographic Details
Main Author: Elkins, Terence J.
Other Authors: ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY
Format: Text
Language:English
Published: 1980
Subjects:
Atmospheric Physics
Active & Passive Radar Detection & Equipment
Radiofrequency Wave Propagation
*OVER THE HORIZON DETECTION
*IONOSPHERIC PROPAGATION
*RADAR CLUTTER
*AURORAE
TABLES(DATA)
IONOSPHERIC MODELS
ULTRAHIGH FREQUENCY
VERY HIGH FREQUENCY
DOPPLER EFFECT
AXIAL FLOW
IONOSPHERIC DISTURBANCES
BACKSCATTERING
PLASMAS(PHYSICS)
HIGH FREQUENCY
GEOMAGNETISM
POLAR REGIONS
PE61102F
WURADC2305J201
polar fox
Online Access:http://www.dtic.mil/docs/citations/ADA091049
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA091049
Description
Summary:A model is developed to permit estimation of the effects of irregularities in the auroral ionosphere in producing clutter experienced by Over-The Horizon radars operating at high geomagnetic latitudes. The model is used on various sources of data, including auroral radar (HF, VHF, UHF), vertical incidence ionosondes, satellite particle detectors, and optical sensors (ground-based and satellite-borne). The model addresses both the amplitude and Doppler components of auroral radar clutter and also the effect of ionospheric refraction that is extremely important at high frequencies. Consideration is given to the question of predictability of the effects of auroral clutter on HF radar systems. An important component of the model is the incorporation of data from the Polar Fox II experiment conducted for the purpose of evaluating auroral clutter effects on OTH radars.

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