RANGE AMBIGUITY REDUCTION IN THE MADRE RADAR. PART 2 - INITIAL SYSTEM EVALUATION
Abstract
The Madre radar, a coherent MTI radar which utilizes ionospheric reflection of high-power HF waves to extend its range beyond the horizon, has been proven reliable in the detection of aircraft targets at ranges as great as 2000 nautical miles and launch-phase ballistic missiles from the Atlantic and Pacific Missile Ranges. A method has been devised by which range ambiguity in the Madre radar may be reduced without the degradation of echo doppler coherence which would result from a simple interpulse frequency-switching scheme. A series of double-sideband pulses, with sidebands separated by different amounts from a common suppressed carrier, is transmitted cyclically. Evaluation of the double-sideband frequency-stepping exciter and receiver system in a study of meteor ionization echoes and local aircraft targets is reported.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0348454
Entities
People
- J. R. Davis
Organizations
- United States Naval Research Laboratory