ORTHOGONAL LINEAR TRANSMIT RECEIVE ARRAY RADAR
First Claim
1. A radar system having an orthogonal antenna system, wherein said orthogonal antenna system comprises at least one transmit aperture producing a transmit beam and at least one receive aperture producing a receive beam, wherein said at least one transmit aperture is substantially orthogonal to said at least one receive aperture, and wherein said transmit beam is narrow in a first dimension and wide in a second dimension, and said receive beam is wide orthogonally to said first dimension and narrow orthogonally to said second dimension, and wherein a composite narrow beam cross-product results from an intersection of said transmit beam with said receive beam.
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Abstract
A radar system having orthogonal antenna apertures is disclosed. The invention further relates to an antenna system wherein the orthogonal apertures comprise at least one transmit aperture and at least one receive aperture. The cross-product of the transmit and receive apertures provides a narrow spot beam and resulting high resolution image. An embodiment of the invention discloses orthogonal linear arrays, comprising at least one electronically scanned transmit linear array and at least one electronically scanned receive linear array. The design of this orthogonal linear array system produces comparable performance, clutter and sidelobe structure at a fraction of the cost of conventional 2D filled array antenna systems.
194 Citations
18 Claims
- 1. A radar system having an orthogonal antenna system, wherein said orthogonal antenna system comprises at least one transmit aperture producing a transmit beam and at least one receive aperture producing a receive beam, wherein said at least one transmit aperture is substantially orthogonal to said at least one receive aperture, and wherein said transmit beam is narrow in a first dimension and wide in a second dimension, and said receive beam is wide orthogonally to said first dimension and narrow orthogonally to said second dimension, and wherein a composite narrow beam cross-product results from an intersection of said transmit beam with said receive beam.
Specification