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Estimation of the Location of a Wireless Terminal, Based on a Propagation Characteristic of a Pressure Wave
Estimation of the Location of a Wireless Terminal, Based on a Propagation Characteristic of a Pressure Wave
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机译:基于压力波的传播特性估计无线终端的位置
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摘要
A method for estimating the location of a wireless terminal at an unknown location, such as within a building. A location engine using the disclosed method receives and uses samples of barometric pressure measured by the wireless terminal to generate a characterization of a pressure wave in the vicinity of the wireless terminal. The location engine generates an estimate of the location of the wireless terminal based on the characterization of the pressure wave and, in some cases, the location of the source of the pressure wave, such as a building's door that is opening or closing. The location engine also bases the estimate of the wireless terminal's location on a propagation characteristic of the pressure wave, such as its speed of propagation.
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