SYSTEM AND METHOD TO COLLECT AND MODIFY CALIBRATION DATA
First Claim
1. A method for generating a calibration database, comprising:
- obtaining location data at a plurality of geographic location situated within a region;
providing a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region;
determining a first point and a second point of said plural points that are in proximity to a first one of said plural geographic locations;
interpolating between said first and second points to thereby determine a third point and entering said third point in said calibration database.
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Accused Products
Abstract
A system and method modifies calibration data used to geo-locate a mobile station. Calibration data measured via a calibration data collection device may contain errors due to the physical limitations of the collection device and/or the collection process. Any data collection device may produce some degree of signal degradation or drop-out. Dead reckoning provides a remedy for signal drop-out, however, it often produces data results that may be unsatisfactory to perform an accurate location estimate. To ensure the integrity of the collected calibration data, a data modification and/or data replacement algorithm may be implemented to enhance the accuracy of the collected data. In addition, current collection procedures used to generate a calibration database may be laborious, time-consuming and expensive. Simplifying the test and measurement equipment needed, and the procedures for obtaining calibration data may save time and expenses.
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Citations
66 Claims
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1. A method for generating a calibration database, comprising:
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obtaining location data at a plurality of geographic location situated within a region; providing a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; determining a first point and a second point of said plural points that are in proximity to a first one of said plural geographic locations; interpolating between said first and second points to thereby determine a third point and entering said third point in said calibration database. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for generating a calibration database, comprising;
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obtaining location data a plurality of geographic locations situated within a region, wherein said location data is obtained using a wireless device, and wherein said region contains plural streets and intersections of said plural streets; providing a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; determining a status of said wireless device; determining from said status a most likely one of said plural streets upon which said wireless device is sited for a first one of said plural geographic locations; determining a first point of said plural points that is in proximity to said first geographic location; and entering said first point in said calibration database. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A system for generating a calibration database, comprising:
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a first database containing location data obtained at a plurality of geographic locations situated within a region; a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; circuitry for determining a first point and a second point of said plural points that are in proximity to a first on of said plural geographical location; circuitry for interpolating between said first and second points to thereby determine a third point; and circuitry for entering said third point in said calibration database. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A system for generating a calibration database, comprising:
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a wireless device for obtaining location data at a plurality of geographic locations situated within a region, wherein said region contains plural streets and intersections of said plural streets; a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; circuitry for determining a status of said wireless device; circuitry for determining from said status a most likely one of said plural streets upon which said wireless device is sited for a first one of said plural geographic location; circuitry for determining a first point of said plural points that is in proximity to said first geographic location; and circuitry for entering said first point in said calibration database. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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Specification