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 a first 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, and a second included angle between a longitudinal direction of a signal wave emanating from a second location of the wireless communication terminal and the longitudinal direction of the antenna at the point;
a distance measuring unit configured for measuring a first distance between the wireless communication terminal at the first location and the point and a second distance between the wireless communication terminal at the second 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 the 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 using the following formula;
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.
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Citations
13 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 a first 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, and a second included angle between a longitudinal direction of a signal wave emanating from a second location of the wireless communication terminal and the longitudinal direction of the antenna at the point; a distance measuring unit configured for measuring a first distance between the wireless communication terminal at the first location and the point and a second distance between the wireless communication terminal at the second 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 the 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 using the following formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification