发明名称 |
SYSTEMS AND METHODS FOR DETERMINING POSITION USING LIGHT SOURCES |
摘要 |
A positioning system and method for determining a coordinate of an object may comprise a positioning transmitter system and a positioning receiver system. The positioning transmitter system includes at least four light sources and a master anchor to modulate the light sources to emit modulated light signals each having a modulation frequency. The positioning receiver system comprises a lens to focus the light signals onto an optical sensor, an envelope detector to receive a signal from the optical sensors and provide output signals corresponding to the modulation frequency, and positioning detection circuitry. The positioning detection circuitry receives calibration data; determines at least four phase difference of arrival (PDOA) pairs based on the output signals from the envelope detector; determines at least four phase corrected PDOA pairs based on the calibration data and the PDOA pairs; determines at least four linear distance differences based on the phase corrected PDOA pairs; and determines the coordinate of the object based on the linear distance differences and the calibration data. |
申请公布号 |
WO2012087944(A2) |
申请公布日期 |
2012.06.28 |
申请号 |
WO2011US65866 |
申请日期 |
2011.12.19 |
申请人 |
INTEL CORPORATION;ROBERTS, RICHARD;GOPALAKRISHNAN, PRAVEEN |
发明人 |
ROBERTS, RICHARD;GOPALAKRISHNAN, PRAVEEN |
分类号 |
G01S17/06 |
主分类号 |
G01S17/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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