Gyromagnetic geopositioning system
First Claim
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1. A geopositioning system comprising:
- an accelerometer comprising three sensing axes;
a gyroscope comprising three sensing axes;
a magnetometer comprising three sensing axes; and
a processing circuit comprising a non-transitory storage medium, the non-transitory storage medium having instructions stored therein, which, when executed by the processing circuit, cause the processing circuit to calculate a location of the geopositioning system as a latitude, longitude, and altitude with respect to the Earth based on a combined output of the accelerometer, the gyroscope, and the magnetometer,wherein the calculating of the location comprises;
determining a plane of a local horizon from measurements performed by the accelerometer;
determining a direction of a spin axis of the Earth from measurements performed by the gyroscope; and
calculating the latitude from the angle between the local horizon and the spin axis.
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Abstract
A geopositioning system. The geopositioning system includes an accelerometer including three sensing axes, a gyroscope including three sensing axes, and a magnetometer including three sensing axes, and a processing circuit. The processing circuit is configured to calculate a location of the geopositioning system as a latitude, longitude, and altitude with respect to the Earth.
7 Citations
20 Claims
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1. A geopositioning system comprising:
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an accelerometer comprising three sensing axes; a gyroscope comprising three sensing axes; a magnetometer comprising three sensing axes; and a processing circuit comprising a non-transitory storage medium, the non-transitory storage medium having instructions stored therein, which, when executed by the processing circuit, cause the processing circuit to calculate a location of the geopositioning system as a latitude, longitude, and altitude with respect to the Earth based on a combined output of the accelerometer, the gyroscope, and the magnetometer, wherein the calculating of the location comprises; determining a plane of a local horizon from measurements performed by the accelerometer; determining a direction of a spin axis of the Earth from measurements performed by the gyroscope; and calculating the latitude from the angle between the local horizon and the spin axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A geopositioning system comprising:
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an accelerometer comprising three sensing axes; a gyroscope comprising three sensing axes; a magnetometer comprising three sensing axes; a gimbaled support; and a processing circuit comprising a non-transitory storage medium, the accelerometer, the gyroscope, and the magnetometer being secured to the gimbaled support, wherein the non-transitory storage medium has instructions stored therein, which, when executed by the processing circuit, cause the processing circuit to control the gimbaled support and to calculate a location of the geopositioning system as a latitude, longitude, and altitude with respect to the Earth based on a combined of the accelerometer, the gyroscope, and the magnetometer, and wherein the calculating of the location comprises; determining a plane of a local horizon from measurements performed by the accelerometer; determining a direction of a spin axis of the Earth from measurements performed by the gyroscope; and calculating the latitude from the angle between the local horizon and the spin axis. - View Dependent Claims (16, 17, 18, 19)
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20. A method for determining a location of a geopositioning system, the geopositioning system comprising:
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an accelerometer comprising three sensing axes; a gyroscope comprising three sensing axes; and a magnetometer comprising three sensing axes, the method comprising calculating the location of the geopositioning system as a latitude, longitude, and altitude with respect to the Earth based on a combined output of the accelerometer, the gyroscope, and the magnetometer, wherein the calculating of the location comprises; determining a plane of a local horizon from measurements performed by the accelerometer; determining a direction of a spin axis of the Earth from measurements performed by the gyroscope; and calculating the latitude from the angle between the local horizon and the spin axis.
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Specification