Less than full aperture high resolution phase process for terrain elevation estimation
First Claim
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1. A method of determining an angle within a beam to terrain for a terrain avoidance system, the method comprising:
- receiving first data associated with first returns associated with a first portion of an antenna;
receiving second data associated with second returns associated with a second portion of the antenna, wherein the first portion is different than, intersects, or includes the second portion, anddetermining the angle to the terrain using the first and second data.
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Abstract
A method of determining an angle with a beam to terrain for a terrain avoidance system includes receiving first data associated with first returns associated with a first portion of an antenna. The method further includes receiving second data associated with second returns associated with a second portion of the antenna, wherein the first portion is different than, intersects, or includes the second portion. The method further includes determining the angle to terrain using the first data and second data.
173 Citations
20 Claims
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1. A method of determining an angle within a beam to terrain for a terrain avoidance system, the method comprising:
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receiving first data associated with first returns associated with a first portion of an antenna; receiving second data associated with second returns associated with a second portion of the antenna, wherein the first portion is different than, intersects, or includes the second portion, and determining the angle to the terrain using the first and second data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A radar system coupled to a radar antenna for receiving radar returns, the radar system for providing angle data associated with an angle to terrain, the radar system comprising:
a processor to receive data associated with the radar returns, the processor receiving first data associated with a first portion of the antenna and second data associated with a second portion of the antenna, the first portion being within, intersect with, or exclusive of the second portion, the processor calculating the angle within the beam to the terrain using the first data and the second data. - View Dependent Claims (15, 16, 17)
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18. An apparatus, comprising:
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means for receiving radar returns from a target; means for receiving first data associated with first returns associated with a first portion of an antenna; means for receiving second data associated with second returns associated with a second portion of an antenna, wherein the first portion includes the second portion, intersects the second portion, or is exclusive of the second portion; and means for determining an angle within the beam to the terrain using the first and second data. - View Dependent Claims (19, 20)
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Specification