著者

高久 淳一

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.43, no.2, pp.97-106, 2023-05-10 (Released:2023-06-22)

参考文献数

42

著者

田殿 武雄

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.2, pp.258-263, 2021-05-15 (Released:2021-08-25)

参考文献数

26

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This paper provides an overview and discusses the significance of Advanced Land Observing Satellites (ALOS). Japanese Earth observation programs originally consisted of two branches: the Marine Observing Satellite (MOS) for global observation and the Land Observing Satellite (LOS) for more detailed observation. The first LOS mission was conducted by the Japanese Earth Resources Satellite-1 (JERS-1) from 1992 to 1996. It was followed by the Advanced Land Observing Satellite (ALOS, “Daichi”) from 2006 to 2011. Both achieved global data acquisition with high resolution using L-band Synthetic Aperture Radar (SAR) and optical instruments. ALOS-2, a successor of the SAR mission on ALOS, has been operating very well since 2014, and ALOS-3 and ALOS-4 are now being developed for launch in Japanese fiscal years (JFYs) 2021 and 2022 to follow the optical mission and ALOS-2, respectively. In this paper, I examine the history and future of the ALOS series.

著者

嶌田 将貴 竹内 渉

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.42, no.1, pp.51-62, 2022-02-10 (Released:2022-04-26)

参考文献数

26

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Due to the strong demand for renewable energy resources, the number of newly built photovoltaic cells has increased dramatically. However, these photovoltaic cells are sometimes subject to disasters such as floods and mudflow. To keep such facilities safe from disasters, a method that can monitor the locations and extent of photovoltaic cells in hazardous zones in cost-effective and less time-consuming ways is necessary. In this study, we developed a multi-temporal and multi-source machine -learning-based method for photovoltaic cell detection . The Sentinel-1 and Sentinel-2 datasets were used as data sources, and the random -forest classification method was applied to classify the land use and land cover (LULC) of the study area. Various combinations of inputs to the classifier were compared based on their performance of the LULC classification. After this process, the combination of optical -data, coherence -data, and the average of the coherence -data was selected as the best classification method. The photovoltaic cell detection process was carried out by combining the multi-temporal classification results to improve detection accuracy. This photovoltaic cell detection method achieved high -overall accuracy, high user accuracy, and a high-kappa coefficient.

著者

井上 吉雄

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.37, no.3, pp.213-223, 2017-07-21 (Released:2018-01-31)

参考文献数

25

被引用文献数

11

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Satellite-based remote sensing would provide useful geo-information for the information-based agricultural management (Smart Agriculture). This paper reviews the background and information needs for smart agriculture as well as the necessary sensor specifications and algorithms for application of high-resolution satellites to smart agriculture. The generalized spectral index approach based on hyperspectral data can be used to determine optimal algorithms for prediction of plant and soil variables. This approach would be useful to enhance the applicability of optical satellite sensors that have different waveband specifications. The efficient use of high-resolution satellite sensors would strongly support the diagnostics and decision making in smart agriculture at regional scales.

著者

出村 裕英

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.39, no.3, pp.250-252, 2019-07-20 (Released:2020-01-20)

参考文献数

12

著者

林田 佐智子

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.5, pp.611-614, 2021-11-20 (Released:2022-02-01)

参考文献数

21

著者

本田 謙一 田口 智大 室井 翔太 佐藤 匠 佐藤 史崇 小口 貴雄

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.42, no.3, pp.185-189, 2022-08-10 (Released:2022-11-26)

参考文献数

6

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In this paper, an example of displacement monitoring of landslides using interferometric SAR analysis is reported. The displacement of the mountain landslides was separated into vertical displacement and east-west displacement by 2.5-dimensional analysis using ALOS-2 with multi-temporal and multi-orbital data. The direction and the boundary of displacement were consistent with the results of displacement measured by airborne laser profiler between 4 years and also with the field survey.

著者

大山 博史 松永 恒雄

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.39, no.1, pp.61-67, 2019-02-28 (Released:2019-08-01)

参考文献数

18

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We describe past, ongoing, and planned space-based instruments with the capability to observe the column abundance of greenhouse gases such as carbon dioxide (CO2) and methane (CH4). The key features of the satellite and spectral instruments are concisely summarized.

著者

熊谷 直喜 山野 博哉 サンゴマップ実行委員会

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.38, no.2, pp.95-98, 2018-04-20 (Released:2018-10-28)

参考文献数

21

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Coral reefs are threatened ecosystems, with global and local stressors such as excessive sea-surface temperature contributing to their decline. We review what kind of stressors can have an impact on coral bleaching and how open data can be utilized in predicting model of coral bleaching for local and regional reef management.

著者

祖父江 真一 平林 毅 田殿 武雄 村上 浩 久世 暁彦 石澤 淳一郎 清水 収司 大吉 慶 河村 耕平 濱本 昂 池畑 陽介 佐々木 善信 中元 経史朗 落合 治 松尾 尚子 原田 まり子

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.2, pp.302-304, 2021-05-15 (Released:2021-08-25)

参考文献数

2

著者

可知 美佐子

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.38, no.5, pp.466-469, 2018-11-28 (Released:2019-05-18)

参考文献数

5

著者

泉澤 遥 平山 颯太 水上 陽誠 奈佐原(西田) 顕郎

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

pp.2022.031, (Released:2023-05-23)

参考文献数

27

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Okinawa Island faces a number of environmental problems, such as red soil runoff and biodiversity degradation. Land use/land cover (LULC) is a major factor contributing to these problems, as are changes in LULC. However, there are few up-to-date LULC maps for Okinawa Island with sufficient accuracy or details in classification categories. In this study, we developed an integrated localization method in which new local LULC maps with a localized classification category system were created by taking advantage of existing LULC maps (polygon-based maps and probabilistic layers from AI-based maps) and local expert knowledge. Using this method, we created LULC maps with 13 categories including major categories found on Okinawa Island such as "Agricultural greenhouse," "Sugarcane," "Pineapple" and "Mangrove forest." We used Sentinel-1 and -2 satellite images, Google’s Dynamic World (DW) probability maps, JAXA’s HRLULC version 21.11 (JAXA-v21.11) probability maps, and MAFF’s Fude Polygon maps as input data for classification. By combining all these input data as a single feature space and, applying Random Forests classification with training data collected by ourselves, we obtained an updated LULC map (2020 as the reference year, 10-m spatial resolution) with a higher overall accuracy (OA; 88.45±1.10 %) than other existing maps. To find the contribution of each set of input data, we tested different choices and combinations of the input data. OA was the lowest (83.18±1.29 %) in the case of Sentinel satellite images only (LC_S), however, incorporating DW probability maps (LC_S&D) or JAXA-v21.11 probability maps (LC_S&J) increased the OA to 85.56±1.21 % and 84.20±1.26 %, respectively. Incorporating Fude Polygon maps (LC_S&F) increased the OA to 86.28±1.19 %. The product developed in this study has been released on JAXA’s "High-resolution Land Use Land Cover Maps" website.

著者

樋口 篤志 竹中 栄晶 青木 佐恵子 豊嶋 紘一 山本 宗尚 山本 雄平 市井 和仁

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.4, pp.487-492, 2021-09-20 (Released:2022-01-13)

参考文献数

28

著者

亀山 哲 宮本 千晴 須田 清治 浅野 哲美

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.39, no.5, pp.399-404, 2019-11-20 (Released:2020-05-20)

参考文献数

25

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Mangrove is a general term for plants that inhabit coastal intertidal zones in the tropical to subtropical regions. We focused on the green infrastructure function of this mangrove wetland. In addition to ecological restoration, we are also supporting restoration activities in the coastal area of Vietnam from the viewpoint of Eco-DRR (Ecosystem-based Disaster Risk Reduction), which contributes to mitigating the effects of climate change. The purpose of using remote sensing (partially GIS database) for this project is to detect primary mangrove habitats by analyzing past satellite images before the coastal area was developed. In this activity, we regarded the native mangrove area as the suitable place for the original mangrove habitat (a place suitable for wetland restoration), and used the image analysis results in the selection of plantations effectively. The most part of the native mangrove area detected as a result of this analysis was concentrated in the coastal delta (especially near the estuary where the island is located offshore). This approach of integrating native (potential) mangrove habitats with huge amounts of big data to detect natural restoration sites in a wide area can reduce the cost of field surveys. Therefore, future application in nature restoration is strongly expected.

著者

井上 吉雄

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.2, pp.119-126, 2021-05-15 (Released:2021-08-25)

参考文献数

18

著者

六川 修一

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.1, pp.1, 2021-01-20 (Released:2021-06-04)

著者

金田 真一 千葉 達朗

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.42, no.3, pp.196-198, 2022-08-10 (Released:2022-11-26)

参考文献数

5

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On August 13, 2021, there was an eruption of Fukutoku-Oka-no-Ba submarine volcano, located between Iwo Jima and Minami Iwo Jima in the southernmost part of the Ogasawara Islands, approximately 1,300 km from Tokyo. The volcanic plume reached a height of 16 km and ejected a large amount of pumice, which floated over the Pacific Ocean.Some of the floating pumice drifted to the Ryukyu Islands, reaching the main island of Okinawa and Amami-Oshima in early October 2021. As of June 2022, floating pumice was still affecting marine traffic, fishing, and tourism in the area. This article presents satellite images of the eruption and the drifting floating pumice stone.

著者

横矢 直人

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.38, no.2, pp.105-110, 2018-04-20 (Released:2018-10-28)

参考文献数

22

被引用文献数

1

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Resolution enhancement is a key technology that can expand the range of potential applications for spaceborne hyperspectral missions. This paper provides an overview of resolution enhancement techniques for hyperspectral imagery, namely, hyperspectral superresolution, subpixel mapping, hyperspectral pansharpening, and hyperspectral and multispectral data fusion. The paper describes the potential and limitations of each technique from the viewpoint of practicality.

著者

笠井 康子

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.36, no.3, pp.251-255, 2016-07-05 (Released:2016-12-27)

参考文献数

11

被引用文献数

1

著者

島田 政信

出版者

一般社団法人 日本リモートセンシング学会

雑誌

日本リモートセンシング学会誌 (ISSN:02897911)

巻号頁・発行日

vol.41, no.2, pp.217-223, 2021-05-15 (Released:2021-08-25)

参考文献数

9