一种基于扩频声波的室内定位方法及实现

An Indoor Positioning Method and Implementation Based on Spread Spectrum Acoustic Wave

为实现高精度、稳定可靠的室内定位导航,选择声波这种精度高、成本低、不受室内光线电磁等环境影响的室内定位方式。对于声波在传播过程中存在的衰减特性、多径效应和噪声干扰等影响,提出了一种基于扩频声波的室内定位方法。利用扩频通信技术对声波信号进行扩频调制、定位解算等处理,并通过搭建的硬件平台进行定位测试。实验结果表明,该扩频声波室内定位方法误差在10 cm以内,具有一定的抗干扰能力和较高的定位精度。

In order to achieve high-precision,stable and reliable indoor positioning and navigation,the indoor positioning method of high accuracy,low cost,and not affected by indoor light electromagnetic environment was chosen.For the attenuation characteristics,multipath effects and noise interference of sound waves in the propagation process,an indoor positioning method based on spread spectrum sound waves was proposed.Using spread spectrum communication technology,the sound signal was processed by spread spectrum modulation and positioning solution,and the positioning test was carried out through the built hardware platform.Experimental results show that the spread spectrum acoustic wave indoor positioning method has an error within 10 cm,and has certain anti-interference ability and high positioning accuracy.