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Efficient use of expected user altitude data to aid in determining a position of a mobile station
Efficient use of expected user altitude data to aid in determining a position of a mobile station
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机译:有效使用预期的用户海拔高度数据来帮助确定移动台的位置
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摘要
A method and apparatus for using a predetermined portion of terrain elevation maps in a database for aiding in computing a three-dimensional position of a wireless station. Instead of using the entire terrain model of the earth or an entire country, the database consists of an incomplete model, which includes only the most populous areas or specific regions. This reduces the size of the information in the database, which in turn reduces the amount of time to compute the positions of the wireless device.
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