SPEED MEASURING SYSTEM AND SPEED MEASURING METHOD THEREOF
First Claim
1. A speed measuring system for measuring the speed of a wireless communication terminal communicating with a base station, the base station comprising a signal tower, an antenna configured in a horizontal plane on the signal tower, the signal tower defining a central longitudinal axis perpendicular to the antenna, and the axis intersecting the antenna at a point, the system comprising:
- an angle measuring unit configured for measuring an included angle between a longitudinal direction of a signal wave emanating from a first location of the wireless communication terminal and a longitudinal direction of the antenna at the point;
a distance measuring unit configured for measuring a distance between the wireless communication terminal at the first location and the point;
a time measuring unit configured for measuring the time the wireless communication terminal takes to move from the first location to a second location; and
a speed calculator configured for calculating the speed of the wireless communication terminal moving from the first location to the second location according to the included angle, the distance and the measured time.
1 Assignment
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Accused Products
Abstract
A speed measuring system for measuring the speed of a wireless communication terminal communicating with a base station includes an angle measuring unit, a distance measuring unit, a time measuring unit, and a speed calculator. The base station includes a signal tower and an antenna on the signal tower. The signal tower defines a central longitudinal axis perpendicular to the antenna, and the axis intersects the antenna at a point. The angle measuring unit measures an included angle between signal from the wireless communication terminal at any location and the antenna. The distance measuring unit measures a distance between the wireless communication terminal at any location and the point. The time measuring unit measures the time the wireless communication terminal takes from a first location to a second location. The speed calculator calculates the speed of the wireless communication terminal.
15 Citations
14 Claims
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1. A speed measuring system for measuring the speed of a wireless communication terminal communicating with a base station, the base station comprising a signal tower, an antenna configured in a horizontal plane on the signal tower, the signal tower defining a central longitudinal axis perpendicular to the antenna, and the axis intersecting the antenna at a point, the system comprising:
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an angle measuring unit configured for measuring an included angle between a longitudinal direction of a signal wave emanating from a first location of the wireless communication terminal and a longitudinal direction of the antenna at the point; a distance measuring unit configured for measuring a distance between the wireless communication terminal at the first location and the point; a time measuring unit configured for measuring the time the wireless communication terminal takes to move from the first location to a second location; and a speed calculator configured for calculating the speed of the wireless communication terminal moving from the first location to the second location according to the included angle, the distance and the measured time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A speed measuring method for measuring the speed of a wireless communication terminal communicating with a base station, the base station comprising a signal tower, and an antenna configured in a horizontal plane on the signal tower, the signal tower defining a central longitudinal axis perpendicular to the antenna, and the axis intersecting the antenna at a point, the method comprising:
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measuring a first included angle between a longitudinal direction of a signal wave emanating from the wireless communication terminal at a first location and a longitudinal direction of the antenna at the point, and a first distance between the wireless communication terminal at the first location and the point; measuring a second included angle between the longitudinal direction of the signal wave emanating from the wireless communication terminal at a second location and the longitudinal direction of the antenna at the point, and a second distance between the wireless communication terminal at the second location and the point; measuring the time the wireless communication takes to move from the first location to the second location; and calculating the speed of the wireless communication terminal according to the first and second included angles, the first and second distances and the measured time. - View Dependent Claims (12, 13, 14)
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Specification