Method and apparatus for processing navigation data in position determination
First Claim
1. A method of position determination for a mobile station, the method comprising:
- determining a first measurement for position determination for the mobile station from position determination signals received at the mobile station; and
determining a first reliability indicator from the signals for the first measurement, the first reliability indicator representing a level of measurement false alarm probability for the first measurement.
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Accused Products
Abstract
Methods and apparatuses for the processing of false alarms in position determination. At least one embodiment of the present invention estimates and uses measurement false alarm probabilities in the position determination process. In one embodiment, the estimated measurement false alarm probabilities are combined to determine the reliability of the determined position solution or the reliability of the set of measurements as a collection. In one embodiment, the estimated measurement false alarm probabilities are used in the isolation and elimination of faulty measurements. For example, the traditional geometry based metric for identifying a faulty measurement is further weighted according to the measurement false alarm probabilities in order to determine the faulty measurement.
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Citations
78 Claims
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1. A method of position determination for a mobile station, the method comprising:
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determining a first measurement for position determination for the mobile station from position determination signals received at the mobile station; and
determining a first reliability indicator from the signals for the first measurement, the first reliability indicator representing a level of measurement false alarm probability for the first measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of position determination for a mobile station, the method comprising:
combining a plurality of measurement false alarm indicators to determine a reliability of a position calculated using a plurality of measurements, the plurality of measurement false alarm indicators representing levels of a priori false alarm probability for the plurality of measurements respectively. - View Dependent Claims (12, 13, 14, 15)
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16. A method of position determination for a mobile station, the method comprising:
eliminating one of a plurality of measurements from position determination using a plurality of a priori false alarm indicators in response to a determination that the plurality of measurements are not consistent, the plurality of a priori false alarm indicators being determined respectively for the plurality of measurements individually. - View Dependent Claims (17, 18, 19, 20)
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21. A machine readable medium containing executable computer program instructions which when executed by a data processing system cause the system to perform a method of position determination for a mobile station, the method comprising:
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determining a first measurement for position determination for the mobile station from position determination signals received at the mobile station; and
determining a first reliability indicator from the signals for the first measurement, the first reliability indicator representing a level of measurement false alarm probability for the first measurement. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A machine readable medium containing executable computer program instructions which when executed by a data processing system cause the system to perform a method of position determination for a mobile station, the method comprising:
combining a plurality of measurement false alarm indicators to determine a reliability of a position calculated using a plurality of measurements, the plurality of measurement false alarm indicators representing levels of a priori false alarm probability for the plurality of measurements respectively. - View Dependent Claims (32, 33, 34, 35)
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36. A machine readable medium containing executable computer program instructions which when executed by a data processing system cause the system to perform a method of position determination for a mobile station, the method comprising:
eliminating one of a plurality of measurements from position determination using a plurality of a priori false alarm indicators in response to a determination that the plurality of measurements are not consistent, the plurality of a priori false alarm indicators being determined respectively for the plurality of measurements individually. - View Dependent Claims (37, 38, 39, 40)
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41. A data processing system for position determination for a mobile station, the data processing system comprising:
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means for determining a first measurement for position determination for the mobile station from position determination signals received at the mobile station; and
means for determining a first reliability indicator from the signals for the first measurement, the first reliability indicator representing a level of measurement false alarm probability for the first measurement. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A data processing system for position determination for a mobile station, the data processing system comprising:
means for combining a plurality of measurement false alarm indicators to determine a reliability of a position calculated using a plurality of measurements, the plurality of measurement false alarm indicators representing levels of a priori false alarm probability for the plurality of measurements respectively. - View Dependent Claims (52, 53, 54, 55)
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56. A data processing system for position determination for a mobile station, the data processing system comprising:
means for eliminating one of a plurality of measurements from position determination using a plurality of a priori false alarm indicators in response to a determination that the plurality of measurements are not consistent, the plurality of a priori false alarm indicators being determined respectively for the plurality of measurements individually. - View Dependent Claims (57, 58, 59, 60)
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61. A mobile station of a position determination system, the mobile station comprising:
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a signal receiving circuit to receive position determination signals;
a processor coupled to the signal receiving circuit, the process determining a first measurement for position determination for the mobile station from the signals, the processor determining a first reliability indicator from the signals for the first measurement, the first reliability indicator representing a level of measurement false alarm probability for the first measurement. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68)
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69. A data processing system for position determination for a mobile station, the data processing system comprising:
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a memory to store a plurality of measurement false alarm indicators and a plurality of measurements, the plurality of measurement false alarm indicators representing levels of a priori false alarm probability for the plurality of measurements respectively; and
a processor coupled to the memory, the processor combining the plurality of measurement false alarm indicators to determine a reliability of a position calculated using the plurality of measurements. - View Dependent Claims (70, 71, 72, 73)
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74. A data processing system for position determination for a mobile station, the data processing system comprising:
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a memory to store a plurality of measurements and a plurality of a priori false alarm indicators, the plurality of a priori false alarm indicators being determined respectively for the plurality of measurements individually a processor coupled to the memory, the processor eliminating one of the plurality of measurements from position determination using the plurality of a priori false alarm indicators in response to a determination that the plurality of measurements are not consistent. - View Dependent Claims (75, 76, 77, 78)
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Specification