针对使用单一定位技术在特定场景存在局限性的问题,提出了一种基于北斗定位和蓝牙的复合高精度定位技术。利用蓝牙AOA技术,通过接收到达信号的强度以及已知执行路径的损耗计算设备与目标之间的距离,利用信号到达角计算目标方向,由距离和方向这两个信息进行目标位置的解算,实现室内定位。通过旋转矩阵将北斗卫星定位数据与蓝牙AOA定位数据转换到同一坐标系下,将两者定位信息通过BP神经网络进行多场景融合,以实现全场景的高精度定位。

In view of the limitations of using a single positioning technology in specific scenes,such as the low indoor accuracy of Beidou positioning technology,a composite high-precision positioning technology based on Beidou positioning and Bluetooth is proposed in the paper.Using Bluetooth AOA technology,indoor positioning is achieved by calculating the distance between the device and the target by receiving the strength of the arrival signal and the loss of the known execution path,using the signal arrival angle to calculate the target direction,and using the distance and direction information to calculate the target position.The Beidou satellite positioning data and Bluetooth AOA positioning data are converted to the same coordinate system through the rotation matrix,and the positioning information of the two is fused in multiple scenes through BP neural network to achieve high-precision positioning in the whole scene.