FIELD: antenna engineering; aircraft radars designed for airborne target location, single-pulse direction finding, and tracking, as well as terrain mapping.
SUBSTANCE: proposed aircraft radar antenna has fixed shaping mirror, fixed single-pulse feed, revolving reflecting mirror, and pattern-shaping waveguide channel connected to single-pulse feed; newly introduced in antenna is additional feed connected to pattern-shaping waveguide channel and made in the form of radiator array formed by open ends of rectangular waveguides having common narrow walls and one common horn; amplitude-phase distribution in additional-feed horn aperture is chosen for generating phase distribution of cubically quadrature form; additional feed is installed above fixed mirror focus; it is offset relative to focal plane of fixed mirror toward resting plane of antenna and turned down through 14 to 16 deg. relative to longitudinal axis of antenna.
EFFECT: enlarged functional capabilities of antenna.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MONOPULSE WAVEGUIDE ANTENNA ARRAY | 2024 |
|
RU2824985C1 |
| MONOPULSE SYSTEM | 2009 |
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| EXCITATION SOURCE | 1996 |
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| DEVICE FOR AMPLIFICATION COEFFICIENT MEASUREMENT IN ACTIVE PAA | 1989 |
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SU1841122A1 |
| RADAR REFLECTOR | 2002 |
|
RU2225059C2 |
