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US 4,303,211 AGranted
Radio systems and apparatus
AssigneeThe Marconi Company Limited
InventorsGraham C. Dooley, Alistair J. Dunlop
Life of this patent
Estimating the term…
Abstract
A radome aberration correction system in which data relating to the aberration over a range of angles of incident radar signals is stored in a digital data store. The apparent direction of a radar source is corrected by the addition of an aberration value stored in respect of the particular apparent source direction.
Claims8
A radome aberration correction system having a directional aerial system and a radome enclosing said aerial system, the aberration correcting system comprising:
- (A) an addressable digital data store storing predetermined information in respect of the direction-aberration imposed on radio waves received by said aerial system from different apparent directions so that predetermined aberration information is stored in association with different apparent directions,
- (B) means for detecting the apparent direction of a source of radio waves received by said aerial system,
- (C) means for addressing said data store with an address characteristic of said apparent direction to determine from the data store a predetermined stored value of direction-aberration associated with said apparent direction, and
- (D) means for adding said value of direction-aberration to said apparent direction to give the true direction of said source.
1 more element
A radio homing head for a missile, and including:
- (A) a directional aerial system and a radome enclosing said aerial system,
- (B) an addressable digital data store storing predetermined information in respect of the direction-aberration imposed on radio waves received by said aerial system from different apparent directions so that predetermined aberration information is stored in association with different apparent directions,
- (C) means for detecting the apparent direction of a source of radio waves received by said aerial system,
- (D) means for addressing said data store with an address characteristic of said apparent direction to determine from the data store a predetermined stored value of direction-aberration associated with said apparent direction, and
- (E) means for adding said value of direction-aberration to said apparent direction to give the true direction of said source.
2 more elements
Dependencies are inferred from the claim text.