Direction-of-arrival estimation for signal-of-opportunity receiver
AssigneeUnited States of America as represented by the Administrator of NASA
InventorManohar Deshpande
Life of this patent
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Abstract
A passive receiver system includes a first cross-dipole antenna on a platform, a second cross-dipole antenna on the platform, a passive receiver, and beam steering logic for the first and second cross-dipole antennas. The beam steering logic steers a radiation beam of the passive receiver in a first direction and steers the radiation beam of the passive receiver in a second direction. The first direction is aligned with a direct signal path and the second direction aligned with a reflect signal path. The platform is of a first satellite and the direct signal path is aligned with a second satellite.
Claims20
A system, comprising:
- a passive receiver;
- a first cross-dipole antenna on a platform;
- a second cross-dipole antenna on the platform;
- and
- beam steering logic for the first and second cross-dipole antennas,
- wherein the beam steering logic is configured to steer a radiation beam of the passive receiver in a first direction and to steer the radiation beam of the passive receiver in a second direction different from the first direction, the first direction aligned with a direct signal path and the second direction aligned with a reflect signal path, and wherein the platform is of a first satellite and the direct signal path is aligned with a second satellite.
A system, comprising:
- a passive receiver;
- beam steering logic coupled to first and second cross-dipole antennas;
- and
- processing logic configured to process signals from the first and second cross-dipole antennas, wherein the beam steering logic is configured to steer a radiation beam of the passive receiver in a first direction and to steer the radiation beam of the passive receiver in a second direction different from the first direction, the first direction aligned with a direct signal path and the second direction aligned with a reflect signal path, and wherein the first cross-dipole antenna and the second cross-dipole antenna are coupled to a platform of a first satellite and the direct signal path is aligned with a second satellite.
Dependencies are inferred from the claim text.