Apparatus and method for navigating vehicle using GPS
First Claim
1. A GPS navigating apparatus for a movable object, comprising:
- a) a plurality of GPS antennae installed at positions other than the roof top of the movable object in which the GPS navigating apparatus is mounted;
b) first means for deriving a forward direction of the movable object;
c) second means for selecting any of a plurality of satellites from which each GPS antenna can receive electromagnetic waves on the basis of orbit data of the respective satellites, mounting positions of the GPS antennae, and forward direction of the movable object; and
d) third means for selecting any of the satellites required to calculate a present position of the movable object from among the satellites from which the GPS antennae can receive the electromagnetic waves.
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Accused Products
Abstract
An apparatus and method for navigating a vehicle using GPS (Global Positioning System) are disclosed in which a plurality of GPS antennae are installed on a plurality of positions, e.g., front and rear ends or left and right sides of the vehicle. A direction sensor for detecting a forward direction of the vehicle is installed. Also, a satellite arrangement calculating block for determining satellites from which electromagnetic waves can be received through the respective antennae on the basis of; orbit data on the satellites, the mounting arrangement of the GPS antennae, and the forward direction of the vehicle is included. A receive satellite selecting block for selecting the satellites required to calculate position from among the available satellites from which each GPS antennae can receive electromagnetic waves is installed, so that the receive satellites is previously determined, differently from a diversity method, so speedy and accurate measurement of the present position of the vehicle can be made.
68 Citations
15 Claims
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1. A GPS navigating apparatus for a movable object, comprising:
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a) a plurality of GPS antennae installed at positions other than the roof top of the movable object in which the GPS navigating apparatus is mounted; b) first means for deriving a forward direction of the movable object; c) second means for selecting any of a plurality of satellites from which each GPS antenna can receive electromagnetic waves on the basis of orbit data of the respective satellites, mounting positions of the GPS antennae, and forward direction of the movable object; and d) third means for selecting any of the satellites required to calculate a present position of the movable object from among the satellites from which the GPS antennae can receive the electromagnetic waves. - View Dependent Claims (2)
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3. A vehicular GPS navigating apparatus comprising:
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a) a plurality of GPS antennae installed at positions other than a roof top of the movable object in which the GPS navigating apparatus is mounted; b) first means for deriving a forward direction of the movable object; c) second means for selecting any of a plurality of satellites from which each GPS antenna enables reception of electromagnetic waves on the basis of orbit data of the respective satellites, mounting positions of the GPS antennae, and forward direction of the movable object; and d) third means for selecting any of the satellites required to calculate a present position of the movable object from among the satellites from which the GPS antennae enable reception of the electromagnetic waves. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of navigating a vehicle using GPS (Global Positioning System), comprising the steps of:
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a) providing a plurality of GPS antennae installed at positions other than the roof top of the movable object in which the GPS navigating apparatus is mounted; b) deriving a forward direction of the vehicle; c) selecting any of a plurality of GPS satellites from which each GPS antenna can receive electromagnetic waves on the basis of orbit data of the respective satellites, mounting positions of the GPS antennae, and forward direction of the vehicle; and d) selecting the satellites required to calculate a present position of the vehicle from among the satellites from which the GPS antennae can receive electromagnetic waves. - View Dependent Claims (15)
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Specification