RECEIVER DUAL-REFLECTOR ANTENNA SYSTEM FOR INTERFERENCE SUPPRESSION ONBOARD SATELLITE
First Claim
Patent Images
1. A system for interference suppression onboard a satellite, the system comprising:
- an antenna configured to receive uplink signals from a ground-coverage area and to generate a first signal;
a spot-beam antenna configured to receive interference signals and to generate a second signal; and
a processor configured to receive the first signal from the antenna and the second signal from the spot-beam antenna and to generate a composite signal with the interference signals suppressed.
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Abstract
A system for interference suppression onboard a satellite may include an antenna that is configured to receive uplink signals from a ground-coverage area and to generate a first signal. A spot-beam antenna may be configured to receive interference signals and to generate a second signal. A processor may be configured to receive the first signal from the antenna and the second signal from the spot-beam antenna and to perform a cross-correlation to generate a composite signal that includes a null at an interference frequency. The antenna may be a shaped reflector antenna and the spot-beam antenna may be a parabolic reflector antenna.
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Citations
20 Claims
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1. A system for interference suppression onboard a satellite, the system comprising:
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an antenna configured to receive uplink signals from a ground-coverage area and to generate a first signal; a spot-beam antenna configured to receive interference signals and to generate a second signal; and a processor configured to receive the first signal from the antenna and the second signal from the spot-beam antenna and to generate a composite signal with the interference signals suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for interference suppression onboard a satellite, the method comprising:
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receiving uplink signals from a ground-coverage area and generating a first signal based on the uplink signals; receiving interference signals and generating a second signal based on the interference signals; and receiving the first signal and the second signal and generating a composite signal with the interference signals suppressed by performing a weighted sum. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A satellite system, comprising:
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one or more shaped beam antennas; one or more spot-beam antennas that are mechanically steerable; a processor configured to perform cross-correlation; and a payload configured to couple the one or more shaped beam antennas, the one or more spot-beam antennas, and the processor and to facilitate coupling first and second signals generated, respectively, by the one or more shaped beam antennas and the one or more spot-beam antennas to the processor, wherein the processor is configured to perform a weighted sum to generate composite signals with interference signals suppressed. - View Dependent Claims (20)
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Specification