Accession Number : ADP006297

Title :   Angle of Arrival Observations of HF Radio Waves,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Jeffrey, Zebulon R. ; McNamara, Leo F.

Report Date : 03 MAY 1990

Pagination or Media Count : 13

Abstract : This paper describes selected total angle of arrival observations of signals from HF transmitters at ranges from 41 to 1150 km, over a wide range of ionospheric conditions. Particular attention is paid to the physical interpretation of the observations, especially in terms of the effects of travelling ionospheric disturbances (TIDs) and multi-model propagation. Observations made during a mid-latitude particle-E event are also briefly described.

Descriptors :   *IONOSPHERIC PROPAGATION, ANGLE OF ARRIVAL, HIGH FREQUENCY, RADIO SIGNALS, RANGE(DISTANCE).

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE