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林业资源管理 ›› 2020, Vol. 0 ›› Issue (2): 103-111.doi: 10.13466/j.cnki.lyzygl.2020.02.016

• 科学研究 • 上一篇    下一篇

基于UWB传感器的树木定位研究

郑似青1,2(), 方陆明1,2(), 孙林豪1,2, 郑辛煜1,3, 刘江俊1,2   

  1. 1.浙江农林大学 信息工程学院,杭州 311300
    2.浙江省林业智能监测与信息技术研究重点实验室,杭州 311300
    3.国家林业与草原局林业感知技术与智能装备重点实验室,杭州 311300
  • 收稿日期:2020-01-31 修回日期:2020-04-20 出版日期:2020-04-28 发布日期:2020-06-15
  • 通讯作者: 方陆明
  • 作者简介:郑似青(1996-),男,浙江衢州人,在读硕士,主要从事林业智能装备方面的研究。Email:1326372008@qq.com
  • 基金资助:
    浙江省科技重点研发计划资助项目(2018C02013);浙江省自然科学基金青年基金项目(LQ19D010011)

Research on Tree Location Based on UWB Sensors

ZHENG Siqing1,2(), FANG Luming1,2(), SUN Linhao1,2, ZHENG Xinyu1,3, LIU Jiangjun1,2   

  1. 1. School of Information Engineering,Zhejiang A&F University,Hangzhou 311300
    2. Zhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information Technology,Hangzhou 311300
    3. Key Laboratory of National Forestry and Grassland Administration on Forestry Sensing Technology and Intelligent Equipment Hangzhou 311300
  • Received:2020-01-31 Revised:2020-04-20 Online:2020-04-28 Published:2020-06-15
  • Contact: FANG Luming

摘要:

树木位置是森林样地调查中重要的调查因子,由于林下环境复杂,树木定位的技术方法面临很大的挑战。针对当前树木位置测量技术方法存在的效率低、携带不便、成本高、不适用于非视距测量等问题,提出了一种基于UWB传感器并结合海拔计来获取树木位置信息的方法,并自行设计了树木位置采集装置。选取8个树种多样、坡度不一的样地进行试验。首先,在每个样地中布置四个UWB基站;然后,携带内置UWB定位标签的装置采集每棵树木与各个基站之间的距离;最后,将所采集的数据进行MATLAB仿真,研究不同大小权重值对定位精度的影响。结果表明:存在一个最优权重值,可使平均定位误差下降3.31cm;相较其它四边形定位算法复杂度降低,更适用于枝叶茂密、地形复杂等非视距情况下的树木定位。

关键词: 森林样地调查, 树木位置, UWB, 四边测距, 仿真

Abstract:

Tree location is an important survey factor in forest plot surveys.Due to the complexity of the forest environment,current techniques for tree location are less mature.Aiming at the problems of current tree position measurement methods or technologies,such as low efficiency,inconvenience,high cost,and unsuitability for non-line-of-sight measurement,this paper proposes a method based on UWB sensors combined with an altimeter to obtain tree position information.And designed a tree position sampling device.Eight selected plots with various tree species and different slopes were tested.First,four UWB base stations were arranged in each plot,and then the device carrying the UWB tag was used to sample the distance between each tree and each base station.The collected data were analyzed by MATLAB to investigate the impact of different weight values on positioning accuracy.The results show that the existence of an optimal weight value can reduce the average positioning error by 3.31cm.Compared with other quadrilateral positioning algorithms,the complexity is lower,and it is more suitable for tree positioning under non-line-of-sight situations such as dense foliage and complex landforms.

Key words: forest plot survey, tree location, UWB, quadrilateral ranging, simulation

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