Single global positioning system receiver capable of attitude determination
First Claim
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1. A global positioning system capable of determining an attitude factor, the system comprising:
- a receiver having an antenna interface;
a first antenna electrically coupled to the antenna interface;
a second antenna disposed in a first fixed relationship to the first antenna and electrically coupled to the antenna interface through a first delay circuit;
a third antenna disposed in a fixed second relationship to the first antenna and electrically coupled to the antenna interface through a second delay circuit; and
wherein the receiver compares a first signal received by the first antenna, a second signal received by the second antenna, and a third signal received by the third antenna to determine the attitude factor.
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Abstract
A platform attitude determination can be made with a single receiver in a global positioning system (GPS). The receiver receives at least three sets of GPS signals from three antennas. Two of the GPS signals are delayed so that the receiver receives each GPS signal in separate time domain slots. In this way, the synchronization of separate GPS receivers does not have to be accomplished.
70 Citations
20 Claims
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1. A global positioning system capable of determining an attitude factor, the system comprising:
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a receiver having an antenna interface; a first antenna electrically coupled to the antenna interface; a second antenna disposed in a first fixed relationship to the first antenna and electrically coupled to the antenna interface through a first delay circuit; a third antenna disposed in a fixed second relationship to the first antenna and electrically coupled to the antenna interface through a second delay circuit; and wherein the receiver compares a first signal received by the first antenna, a second signal received by the second antenna, and a third signal received by the third antenna to determine the attitude factor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A positioning receiver, comprising:
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at least three antennas disposed in a fixed relationship to each other to receive a first set of satellite signals, a second set of satellite signals, and a third set of satellite signals, the second set and the third set being delayed with respect to the first set; and receiving means for processing the first set, the second set, and the third set, and determining an attitude factor in accordance with the first set, the second set, and the third set and the fixed relationship. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of determining an attitude factor for a vehicle, the vehicle including a positioning system having a first antenna, a second antenna, and a third antenna, the first antenna, the second antenna, and the third antenna being disposed in a positional relationship, the method comprising:
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receiving a first set of satellite signals on the first antenna; receiving a second set of satellite signals on the second antenna; delaying the second set of satellite signals for a first time with respect to the first set; receiving a third set of satellite signals on the third antenna; delaying the third set of satellite signals for a second time with respect to the first set; and determining the attitude factor by processing with the first set, the second set, and the third set and the fixed relationship. - View Dependent Claims (18, 19, 20)
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Specification