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Crossed skirt antiradar screen structure for space vehicles
| Details |
Inventors: Barker, William C.; Slager, Donald M.;
Assignee: TRW Inc. (Redondo Beach, CA)
Primary Examiner: Carone; Michael J.
Assistant Examiner:
Attorney, Agent or Firm: Yatsko; Michael S.
A crossed skirt antiradar screen structure for a space vehicle, such as an orbiting satellite vehicle, having members projecting laterally from the main vehicle body. The screen structure includes multiple primary and auxiliary radar screens having electrically conductive skirts at least partially enclosing the vehicle body and the projecting members in a manner such that the screens cooperate to control the radar cross-section and signature of the entire vehicle. According to an important feature of the invention, the several radar screens are so shaped and arranged that all interior corners defined by the screen skirts have oblique angles which preclude retroreflection of an illuminating radar beam from a ground based radar detection system. |
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DETAILED DESCRIPTION The present invention provides a novel deployable crossed skirt antiradar screen structure which is designed for use on a space vehicle, particularly an orbiting satellite vehicle, having members projecting laterally from the main vehicle body.
These projecting members may be cross arms, solar panels, linear antennae, or other projecting devices.
The crossed skirt antiradar screen structure of the invention includes a primary radar screen enclosing the main body of the space vehicle and auxiliary radar screens enclosing the projecting members.
The several radar screens have the biconvex lens configuration disclosed in copending application Ser.
No.
04/721,513.
The present radar screen structure may be designed to totally deny the detection of the space vehicle by ground based radar systems or merely modify the vehicle radar signature to resemble another space vehicle, such as a decoy.
In one disclosed form of the invention, the conductive skirts of the primary and auxiliary radar screens are physically and electrically joined to form, essentially, a single conductive skirt structure having a longitudinal portion enclosing the vehicle body and lateral portions enclosing the projecting members of the body.
In another disclosed from of the invention, the primary and auxiliary radar screens have separate conductive skirts.
A feature common to both forms of the invention is the particular formation of interior corners by the conductive skirts of the primary and auxiliary radar screens.
According to an important feature of the invention, the skirts are shaped and arranged in a manner such that these interior corners have oblique angles which prevent retroreflection of an illuminating radar beam from a ground based radar detection site back to the site.
According to the preferred practice of the invention, for example, each interior corner defined by the skirts of the primary and auxiliary radar screens have an angle equal to or greater than 100.
degree.
.
Stowage and deployment of the present crossed skirt antiradar screen structure may be accomplished in any convenient way
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