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    • 9. 发明申请
    • SYSTEM AND METHOD FOR WIRELESS POSITIONING AND LOCATION DETERMINATION
    • 用于无线定位和位置确定的系统和方法
    • US20150201309A1
    • 2015-07-16
    • US14668620
    • 2015-03-25
    • Board of Trustees of Northern Illinois University
    • Lichuan Liu
    • H04W4/02
    • H04W4/025G01S5/0289G01S5/10
    • A system and method for wireless sensor networks (WSN) positioning that is cost-effective, scalable, can be easily implemented, and provides improved performance and accuracy. A plurality of reference nodes with known locations transmit linear frequency modulation continuous waves (FMCW), while sensor nodes receive these waves and calculate the range difference among them based on the time frequency difference arrival (TFDA). The location information of the sensor nodes is obtained through the solving of a set of hyperbolic equations. Multidimensional scaling may be used or hybrid optimizing algorithm (HOA) processing to combine steepest-descent processing with Taylor series expansion to increase accuracy.
    • 可以容易地实现具有成本效益,可扩展性的无线传感器网络(WSN)定位的系统和方法,并提供改进的性能和准确性。 具有已知位置的多个参考节点发射线性频率调制连续波(FMCW),而传感器节点接收这些波,并且基于时间差异到达(TFDA)计算它们之间的距离差。 传感器节点的位置信息通过求解一组双曲线方程得到。 可以使用多维缩放或混合优化算法(HOA)处理来将最大下降处理与泰勒级数展开相结合以增加精度。