Propagation predictions for HF radar system planning
Abstract
This paper describes a number of propagation prediction algorithms and their associated computer programs, which have been applied to and, in some cases specifically designed for, HF radar system planning. These algorithms can be used to solve a variety of propagation prediction problems including (1) ground-wave path-loss prediction (used to model antennas mounted near a cliff, propagation over smooothly varying irregular terrain, propagation over smooth ground but with an exponential atmosphere, and paths over a rough sea); (2) HF sky-wave prediction; (3) estimating the rate at which meteor-trail echoes (a source of false targets or clutter) exceed the detection threshold of a radar; and (4) extending an HF sea-echo Doppler spectrum model to include the averaging effects of a finite antenna beamwidth and the finite resolution bandwidth of a radar receiver.
- Publication:
-
GEC Journal Research
- Pub Date:
- 1986
- Bibcode:
- 1986GECJR...4..275G
- Keywords:
-
- Clutter;
- Computer Programs;
- Ground Wave Propagation;
- High Frequencies;
- Ocean Surface;
- Radar Transmission;
- Backscattering;
- Bragg Angle;
- Meteor Trails;
- Ray Tracing;
- Signal To Noise Ratios;
- Sky Waves;
- Communications and Radar