发明名称 |
RFID DEVICE, METHODS AND APPLICATIONS |
摘要 |
Systems and methods for ranging in indoor environment that are accurate and that are substantially undisturbed by multipath interference. The method includes illuminating a sensor tag with electromagnetic radiation generated from a transceiver; the transceiver are being located a distance away from the sensor tag; the sensor tag comprising at least one nonlinear transmission line (NLTL) for broadband harmonic generation, receiving backscattered electromagnetic radiation from the at least one NLTL at three or more locations; coordinates of the three or more locations being known, obtaining from the phase and magnitude outputs at a second harmonic and at least one sub harmonic of second harmonic, a distance from the sensor tag to each of the three or more locations and trilaterating a location of the sensor tag. |
申请公布号 |
US2015198708(A1) |
申请公布日期 |
2015.07.16 |
申请号 |
US201314413523 |
申请日期 |
2013.07.12 |
申请人 |
Khan Edwin C.;Ma Yunfei |
发明人 |
Khan Edwin C.;Ma Yunfei |
分类号 |
G01S13/38;G01S13/84;G06K7/10 |
主分类号 |
G01S13/38 |
代理机构 |
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代理人 |
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主权项 |
1. A method for localization of an object in indoor environments, the method comprising: illuminating a sensor tag with electromagnetic radiation generated from a transceiver; the transceiver are being located a distance away from the sensor tag; the sensor tag comprising at least one nonlinear transmission line (NLTL) for broadband harmonic generation;
receiving backscattered electromagnetic radiation from the at least one NLTL at three or more locations; coordinates of the three or more locations being known; obtaining, from phase and magnitude outputs at a second harmonic and at least one subharmonic of second harmonic, a distance from the sensor tag to each of the three or more locations; and trilaterating a location of the sensor tag. |
地址 |
Ithaca NY US |