METHOD AND APPARATUS FOR POSITIONING
First Claim
1. A positioning method, comprising:
- using a differential global positioning system to calculate a double difference of a satellite distance in connection with a reference station and a receiver station;
calculating a baseline vector pointing from the reference station to the receiver station according to the double difference of satellite distance and cosine law;
using the baseline vector and a position of the reference station to calculate a position of the receiver station;
obtaining a plurality of correction coefficients according to the position of the reference station, the position of the receiver station, and a current time; and
correcting the position of the receiver station according to the correction coefficients and a length of the baseline vector.
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Abstract
A positioning method and a positioning apparatus are provided. In this positioning method, a differential global positioning system is used to calculate a double difference of satellite distance in connection with a reference station and a receiver station. A baseline vector pointing from the reference station to the receiver station is calculated according to the double difference of satellite distance and the cosine law. The baseline vector and the position of the reference station are used to calculate the position of the receiver station. Correction coefficients are obtained according to the position of the reference station, the position of the receiver station, and the current time. The position of the receiver station is corrected according to the correction coefficients and the length of the baseline vector.
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Citations
17 Claims
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1. A positioning method, comprising:
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using a differential global positioning system to calculate a double difference of a satellite distance in connection with a reference station and a receiver station; calculating a baseline vector pointing from the reference station to the receiver station according to the double difference of satellite distance and cosine law; using the baseline vector and a position of the reference station to calculate a position of the receiver station; obtaining a plurality of correction coefficients according to the position of the reference station, the position of the receiver station, and a current time; and correcting the position of the receiver station according to the correction coefficients and a length of the baseline vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. A positioning method, comprising:
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using a differential global positioning system to calculate a double difference of satellite distance in connection with a reference station and a receiver station; calculating a baseline vector pointing from the reference station to the receiver station according to the double difference of satellite distance and cosine law; and using the baseline vector and a position of the reference station to calculate a position of the receiver station. - View Dependent Claims (9, 10, 16)
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11. A positioning method, comprising:
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using a differential global positioning system to calculate a baseline vector pointing from a reference station to a receiver station; using the baseline vector and a position of the reference station to calculate a position of the receiver station; obtaining a plurality of correction coefficients according to the position of the reference station, the position of the receiver station, and a current time; and correcting the position of the receiver station according to the correction coefficients and a length of the baseline vector. - View Dependent Claims (12, 13, 14, 17)
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Specification