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.

本研究旨在建立一种利用SIP估测GPS定位精度及林分蓄积、林分密度等林分信息的方法（信号中断概率）值，该值表示GPS信号接收的状态除以森林冠层。据澄清，从10 - 15分钟计算的SIP值与GPS定位误差的相关性最高，SIP值与GPS定位误差的相关性显著高于半球片计算的林冠开度指数和GPS观测试验的DOP值，说明SIP不仅可用于GPS定位，而且可用于GPS与GLONASS的组合使用，SIP可用于浮动解决方案的误差管理，这在使用GPS和GLONASS接收器的GNSS观测测试中被认为是困难的。

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

Behavior and usability of the Signal Interruption Probability (SIP) in GNSS surveying under tree canopies

树冠下 GNSS 测量中信号中断概率 (SIP) 的行为和可用性

• 发表时间: 2013
• 期刊: Proceedings of the International Symposium on Tropical Forest Ecosystem Science and Management
• 作者: Hasegawa;H.;Bastos;A. S.;and Shirasawa;H.;and Yoshimura;T.
• 通讯作者: T.