SYSTEM AND METHOD OF LONGITUDE AND LATITUDE COORDINATE TRANSFORMATION
First Claim
1. A system for determining position of a vehicle, said system comprising:
- a global positioning system receiver structured to output a longitude and a latitude of said vehicle, each of said longitude and said latitude being a corresponding angular position, said longitude being greater than or equal to a first predetermined longitude and being less than or equal to a second predetermined longitude, which is greater than said first predetermined longitude, said latitude being greater than or equal to a first predetermined latitude and being less than or equal to a second predetermined latitude, which is greater than said first predetermined latitude; and
a processor comprising;
an input structured to input said longitude and said latitude,a routine structured to determine a first distance approximating a distance corresponding to said latitude as a function of said latitude, a third angular position and a first predetermined value, determine a second distance approximating a distance corresponding to said longitude as a function of said longitude, a fourth angular position and a second value, andan output structured to output said first distance and said second distance.
2 Assignments
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Accused Products
Abstract
A coordinate transformation system determines the position of a railroad vehicle. The system includes a global positioning system receiver outputting a longitude and a latitude of the vehicle. Each of the longitude and latitude is angular position bounded by a first predetermined longitude and a greater second predetermined longitude or a first predetermined latitude and a greater second predetermined latitude, respectively. A processor includes an input inputting the longitude and the latitude, a routine determining a first distance approximating a distance corresponding to the latitude as a function of the latitude, a third angular position and a first predetermined value, determine a second distance approximating a distance corresponding to the longitude as a function of the longitude, a fourth angular position and a second value, and an output outputting the first and second distances.
9 Citations
25 Claims
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1. A system for determining position of a vehicle, said system comprising:
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a global positioning system receiver structured to output a longitude and a latitude of said vehicle, each of said longitude and said latitude being a corresponding angular position, said longitude being greater than or equal to a first predetermined longitude and being less than or equal to a second predetermined longitude, which is greater than said first predetermined longitude, said latitude being greater than or equal to a first predetermined latitude and being less than or equal to a second predetermined latitude, which is greater than said first predetermined latitude; and a processor comprising; an input structured to input said longitude and said latitude, a routine structured to determine a first distance approximating a distance corresponding to said latitude as a function of said latitude, a third angular position and a first predetermined value, determine a second distance approximating a distance corresponding to said longitude as a function of said longitude, a fourth angular position and a second value, and an output structured to output said first distance and said second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A location determining system comprising:
a processor structured to input a latitude and a longitude of an object, said latitude being a first angular position, said longitude being a second angular position, said latitude being greater than or equal to a first predetermined latitude and being less than or equal to a second predetermined latitude, which is greater than said first predetermined latitude, said longitude being greater than or equal to a first predetermined longitude and being less than or equal to a second predetermined longitude, which is greater than said first predetermined longitude, said processor comprising; a routine structured to determine a first distance approximating a distance corresponding to said latitude as a function of said latitude, a third angular position and a first predetermined value, and determine a second distance approximating a distance corresponding to said longitude as a function of said longitude, a fourth angular position and a second value, and an output structured to output said first distance and said second distance. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of determining a location of an object, said method comprising:
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inputting a latitude and a longitude of said object, said latitude being a first angular position, said longitude being a second angular position, said latitude being greater than or equal to a first predetermined latitude and being less than or equal to a second predetermined latitude, which is greater than said first predetermined latitude, said longitude being greater than or equal to a first predetermined longitude and being less than or equal to a second predetermined longitude, which is greater than said first predetermined longitude; determining a first distance approximating a distance corresponding to said latitude as a function of said latitude, a third angular position and a first predetermined value; determining a second distance approximating a distance corresponding to said longitude as a function of said longitude, a fourth angular position and a second value; and outputting said first and second distances. - View Dependent Claims (22, 23, 24, 25)
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Specification