Accession Number : ADA322094

Title :   RADARC Evaluation ROTHR Data: Winter, Spring, and Summer 1994.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC RADAR DIV

Personal Author(s) : Headrick, J. M. ; Thomason, J. F. ; Lucas, D. L. ; Pinson, G. S.

PDF Url : ADA322094

Report Date : 28 FEB 1997

Pagination or Media Count : 14

Abstract : We find that the RADARC skywave radar estimation model in its simplest form provides received power level behavior that correlates well with observed received signal strengths from short to moderate one hop distances. Correspondence generally decreases with increasing range. Environmental noise from the model is similar to that observed. Spread in Doppler clutter (SDC), as an addition to the passive environmental noise level, frequently degrades performance. The RADARC version used did not predict the SDC observed, and the incorporation of a validated SDC model is where a major improvement in prediction can be implemented. The radar data we have used here employed a ten waveform repetition rate (WRF), and therefore indicated the performance to be expected when using the low WRF modes with no ambiguous range folding. However, although not exhibited in this study, we need improved very long range propagation predictions to account for ambiguous SDC.

Descriptors :   *OVER THE HORIZON RADAR, POWER LEVELS, REPETITION RATE, WAVEFORMS, DOPPLER RADAR, SEASONAL VARIATIONS, RADAR CLUTTER, IONOSPHERIC MODELS, SKY WAVES, AREA COVERAGE, IONOSPHERIC PROPAGATION, MEXICO GULF.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE