The G-Spatial Information Center (managed and operated by AIGID, center director Ryosuke Shibasaki) was established in accordance with the Basic Plan for the Advancement of Utilizing Geospatial Information and related documents, approved by the Japanese Cabinet in March 2012. The G-spatial Information Center began operating on November 24th, 2016 in order to implement a one-stop data download system, as well as the collaborative use of various data, and value creation that transcends the walls between public, private and academic institutions. This paper explains the Social Aims of the G-Spatial Information Center.
While large variations in nature cause enormous disasters in human society, the effects of human activities, such as global warming and the destruction of ecosystems, bring about a change in the natural system and become a constraint on human activities. Data Integration and Analysis System (DIAS) started from 2006 and is developed in the project contracted by MEXT. The goals of DIAS are to collect and store earth observation data ; to analyze such data in combination with socio-economic data, and convert data into information useful for crisis management with respect to global-scale environmental disasters, and other threats ; and to make this information available within Japan and overseas.
This paper introduces Landsat-8/ASTER/Sentinel-2 unified data global graphic user interface (GUI) developed by AIST. Users can freely browse, search, and download each band and true color image of global Landsat-8 data, global ASTER data, and true color image of global Sentinel-2 data.
DiMAPS provides an web-based easy-to-understand display on a map by quickly aggregating disaster information in the field of land, infrastructure and transport. It is used as an information sharing platform of the Ministry of Land, Infrastructure, Transport and Tourism in the event of a disaster.
GNSS high precision positioning has high potential for being applied to wide range of industrial areas. In this paper introduced our recent approaches toward expanding application areas of GNSS high precision positioning. We have launched cost-effective correction data delivery services for GNSS carrier-phase positioning over mobile communication networks. We also study the feasibility of cloud-based GNSS positioning architecture which is expected to improve the positioning accuracy in non-ideal GNSS signal reception environments including urban-canyon environments.
As the Internet of Things (IoT) progresses and automation progresses in fields such as automobiles and agriculture, the need for highly reliable and accurate positioning is increasing as a requirement for autonomous driving. Therefore, ALES Corp. started a high-accuracy location distribution service nationwide in end of November 2019. In this paper, we report on the outline and demonstration of the services provided by ALES Corp.
This paper presents operation and evaluation status of Centimeter Level Augmentation Service (CLAS) utilizing L6 signal in Quasi-Zenith Satellites System. In the service, Centimeter Level Augmentation Information including correction and integrity information is allocated to QZSS L6 signal and broadcast to users available for the major part of Japan and within the territorial waters. CLAS begun on November 1, 2018 with a four-satellite constellation of QZSS.
The quasi-zenith satellite system “Michibiki” has been started with 4 satellites, and development and maintenance are progressing to establish 7 satellites. In addition, to utilize “Michibiki”, verification experiments in various industrial fields have been carried out, and new services and products are being created. This paper explains the outline and status of utilization of “High-precision positioning correction technology/MADOCA”, which is also distributed as a technology demonstration of “Michibiki”.
Since 2011, Trimble has provided the real-time and post-processing PPP service called Trimble CenterPoint® RTX that achieves positioning accuracy of a few cent-meter worldwide in its own products. In addition, in North America and Europe, Trimble CenterPoint® RTX Fast, the real-time PPP service with the initialization time of less than 1 minute, has been put into practical use. Recently, Trimble has developed the class library that third parties, especially automotive system integrators, can use to take advantage of Trimble RTX technology. This is expected to contribute to high-speed and precise positioning of moving objects.
Accurate measurement of the shape of road surfaces is essential in pavement work. Recently, a mobile laser scanner has been used to facilitate pavement measurement. For localization purposes, an automatic tracking total station (ATTS) and an inertial measurement unit (IMU) are required. To achieve sufficient accuracy, a sophisticated IMU must be used ; increases the cost associated with the measurement process. In this report, a novel mobile camera localization method is proposed that utilizes an ATTS is proposed. This method can facilitate accurate estimation of a camera pose using few ground control points, which enables low-cost photogrammetry-based measurements. A prototype of the proposed system was built, and it was experimentally demonstrated that the localization method is sufficiently accurate for pavement management.