以人工标志物为基准的无人机定位系统

Automatic Positioning System of UAV Based on Artificial Marker

设计了一种以STM32单片机为控制核心的短距离高精度定位系统。系统通过识别定点位置的单一颜色块作为标识物来控制无人机不断飞到标识物上空,从而实现精准定位。本系统基于OV7670+STM32的结构开发,通过OV7670采集图像存储在FIFO中;STM32通过读取FIFO中的数据进行颜色识别与跟踪。实验结果表明,本系统识别准确率较高,定位精度较GPS定位提高了一个量级。

In the paper,a short-range and high-precision positioning system with STM32 microcontroller as the control core is designed. The system controls the unmanned aerial vehicle （UAV） to fly over the marker by identifying a single color block of the fixed position as a marker to achieve precise positioning.The system is based on the structure of OV7670＋STM32 development,the OV7670 acquisition images are stored in the FIFO, STM32 can identify and track the color through reading the data in the FIFO. The experiment results show that the accuracy of the system is higher and the positioning accuracy is higher than GPS.