Development of the forest monitoring method using GPS signal degradation under tree canopies

利用树冠下GPS信号衰减的森林监测方法的开发

• 批准号: 23580206
• 负责人: HASEGAWA Hisashi
• 金额: $ 3.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580206/
• 关键词: GPS; GLONASS; 信号分断度（SIP）; LIDAR; 林分情報; GNSS; 森林; SIP; 測位精度

Objective of this study is to establish a method for estimation of GPS positioning accuracy and stand information, such as stand volume or stand density, by using SIP (Signal Interruption Probability) value, which indicates status of GPS signal reception divided by forest canopies.It was clarified that SIP values calculated from 10 - 15 minutes have the highest correlation to GPS positional errors, and the correlation of SIP values to GPS positional errors is significantly higher than the canopy opening index calculated by a hemispherical photograph and DOP value through GPS observation tests in various forest stands and seasons.Furthermore, it was also clarified that SIP can be applied to not only GPS positioning but also combination use of GPS and GLONASS, and that SIP can be used for error management for float solutions which is considered to be difficult through GNSS observation tests using GPS and GLONASS receivers.

本研究的目的是建立一种利用 SIP（​​信号中断概率）值来估计 GPS 定位精度和林分信息（例如林分体积或林分密度）的方法，该值指示按森林冠层划分的 GPS 信号接收状态。澄清10-15分钟计算的SIP值与GPS位置误差的相关性最高，并且SIP值与GPS位置误差的相关性显着高于通过半球照片计算的冠层开口指数和通过不同林分和季节的GPS观测测试得出的DOP值。此外，还明确了SIP不仅可以应用于GPS定位，还可以应用于GPS和GLONASS的组合使用，并且SIP可以用于浮动解决方案的错误管理通过使用 GPS 和 GLONASS 接收机的 GNSS 观测测试，这被认为是困难的。

项目成果

Evaluation of GPS signal reception under tree canopies using different antenna heights

使用不同天线高度的树冠下 GPS 信号接收评估

• 发表时间: 2012
• 期刊: Proceedings of International Ergonomic Workshop: Ergonomic Challenges in Future Forest and Forestry
• 作者: Bastos;A. S. and Hasegawa;H.;中西 麻美・稲垣 善之・柴田 昌三・今西 亜友美・大澤 直哉;Alex Souza Bastos and Hisashi Hasegawa
• 通讯作者: Alex Souza Bastos and Hisashi Hasegawa

Evaluation of GPS signal reception under tree canopies using different antenna heights.

使用不同天线高度的树冠下 GPS 信号接收评估。

• 发表时间: 2012
• 期刊: Proceedings of International Ergonomic Workshop : Ergonomic Challenges in Future Forest and Forestry
• 作者: Bastos;A. S. and Hasegawa;H.
• 通讯作者: H.

GPS Accuracy in Using Antenna Pole under Tree Canopies and Usability of Signal Interruption Probability (SIP) for Accuracy Estimation

树冠下使用天线杆的 GPS 精度以及信号中断概率 (SIP) 用于精度估计的可用性

• 发表时间: 2013
• 期刊: J. Jpn
• 作者: Bastos;A. S.;Hasegawa;H.;and Yoshimura;T.
• 通讯作者: T.

Behavior of GPS Signal Interruption Probability under Tree Canopies in Different Forest Conditions

• DOI: 10.5721/eujrs20134636
• 发表时间: 2013-01-01
• 期刊: EUROPEAN JOURNAL OF REMOTE SENSING
• 影响因子: 4
• 作者: Bastos, Alex Souza;Hasegawa, Hisashi
• 通讯作者: Hasegawa, Hisashi

A preliminary investigation of the relationship between GPS signal quality and forest canopy structure with airbone lidar data

利用机载激光雷达数据初步研究GPS信号质量与森林冠层结构的关系

• 发表时间: 2013
• 作者: Shirasawa;H.;Hasegawa;H.;and Bastos;A. S.
• 通讯作者: A. S.