Receiver with seamless correction capacity
First Claim
1. A seamless correction system comprising:
- a first antenna for receiving position determination signals;
a receiver coupled to said first antenna for demodulating said position determination signals;
a first processor coupled to said receiver for determining position using said position determination signals;
a second antenna for receiving position determination correction data from a plurality of sources; and
a converter coupled to said second antenna and coupled to said first processor for receiving said position determination correction data from said plurality of sources, said converter determining the optimum source of said position determination correction data from said plurality of sources according to an algorithm and coupling the position determination correction data from said optimum source of position determination correction data to said first processor such that said first processor can more accurately determine position.
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0 Petitions
Accused Products
Abstract
A system and method for determining which of a plurality of correction signals is to be used in a position determination system for determining position. An antenna receives broadcasts of correction data on designated frequencies. The received correction data is analyzed to determine the best correction data signal to use to accurately determine position. The correction data from the selected best source of correction data is coupled to a position determination system for accurate determination of position. Thus, the present invention provides a seamless correction system that determines the best source of correction data from available sources and uses the selected correction data to determine location. The seamless correction system updates the source of correction data automatically. Thus, the user does not have to take the time and effort necessary to determine the location, frequency and format of correction signals broadcast in each area and the user does not have to change frequencies or change equipment to obtain accurate position determination.
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Citations
20 Claims
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1. A seamless correction system comprising:
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a first antenna for receiving position determination signals; a receiver coupled to said first antenna for demodulating said position determination signals; a first processor coupled to said receiver for determining position using said position determination signals; a second antenna for receiving position determination correction data from a plurality of sources; and a converter coupled to said second antenna and coupled to said first processor for receiving said position determination correction data from said plurality of sources, said converter determining the optimum source of said position determination correction data from said plurality of sources according to an algorithm and coupling the position determination correction data from said optimum source of position determination correction data to said first processor such that said first processor can more accurately determine position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A retrofit receiver for coupling to a differential GPS position determining system, said retrofit receiver comprising:
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an antenna for receiving position determination correction data; a receiver coupled to said antenna for demodulating said position determination correction data; and a processor coupled to said receiver for analyzing said position determination correction data so as to determine the best source of position determination correction data for accurately determining position, said processor coupling the position determination correction data from said best source of position determination correction data to said differential GPS position determining system in a format acceptable to said differential GPS position determining system such that position can be accurately determined by said GPS position determining system. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for determining position for a seamless correction system comprising:
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receiving position determination correction data from two or more sources of position determination correction data; determining a rough position; determining the best source of position determination correction data using said position determination correction data and using said rough position; coupling the position determination correction data from said best source of position determining correction data to a position determining system; and determining said position using said position determination correction data from said best source of position determining correction data. - View Dependent Claims (17, 18)
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19. In a computer system including a processor coupled to a bus, and a memory unit coupled to said bus for storing information, a computer-implemented method for determining which of a plurality of sources of position determination correction data is to be used for position determination, said computer-implemented method comprising the steps of:
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a) storing a plurality of signal identification elements corresponding to different signal formats into said computer system; b.) receiving position determination correction data from said plurality of sources; c.) for each source of position determination correction data, determining the type of position determination correction data using said signal identification elements; d.) receiving rough position data; and e) determining the best source of position determination correction data based on the type of position determination correction data and based on said rough position data.
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20. A computer-usable medium having computer-readable program code embodied therein for causing a computer system to perform the steps of:
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a) storing a plurality of signal identification elements corresponding to different signal formats into said computer system; b.) receiving position determination correction data from a plurality of sources; c.) for each source of position determination correction data, determining the type of position determination correction data using said signal identification, elements; d.) receiving rough position data; and e) determining the best source of position determination correction data based on the type of position determination correction data and based on said rough position data.
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Specification