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- W2366041444 abstract "For the urgent needs of indoor positioning technology and th e platform,we proposed a based ultrasonic indoor three-dimensional positioni ng system,and described its working principle and the analyzed ultrasonic sig nals.Based on the character of radio frequency and ultrasonic sensors the system encodes the ultrasonic signal using CDMA(Code Division Multiple Access) technology,so that the destina tion node can distinguish each beacon signal sent to the ultrasound,and combines with the RF signal to achieve TDOA(Time Difference Of Arrival) location algorithm,and ultimately does three-dimensional positioning.Experimental shown that a three-dimensio nal coordinate system is built by a beacon for the origin and the other two beac ons placed on the X axis and the Y axis,which can simplify the triangular posit ioning algorithm and achieve high precision three-dimensional positioning." @default.
- W2366041444 created "2016-06-24" @default.
- W2366041444 creator A5081088522 @default.
- W2366041444 date "2012-01-01" @default.
- W2366041444 modified "2023-09-27" @default.
- W2366041444 title "Indoor Three-Dimensional Positioning System Based on Ultrasonic" @default.
- W2366041444 hasPublicationYear "2012" @default.
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