Study On A Positioning System for Radio-Frequency Technology in Agricultural Environment

• Main Authors: Tong-Young Hsu, 許統揚
• Other Authors: 盛中德
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/24947698267314499166

碩士 === 國立中興大學 === 生物產業機電工程學系所 === 101 === Development of automatic spraying vehicle, it has to develop an appropriate positioning systems for obtain a precise coordinates in the guidance process first. The positioning systems can be broadly divided into 4 categories, they include the Inertial Positioning System (IPS), Global Positioning System (GPS), Location Positioning System (LPS) and Environmental Detection System (EDS). In order to conform the outdoor agri-environment in Taiwan, it was applied the narrow band radio wave UHF technology of the LPS in this study , to ranging and locating in the limited area . The nanoPAN 5375 RF modules for developing a RF positioning systems was used in the outdoor agri-environment. It used the SDS-TWR method to obtain the ranging values and the ToF method and the Multi-Base Station Selection Tactics (MBSST) method to obtain the best estimating coordinate values of the groups. The program was derived with Visual Basic 2008. In this study result , positioning precision can be maintained within the centimeter level in the no-line of sight(N-LOS).