Microsatellite constellations are becoming a practical platform for Earth observation, positioning, and communication. ArkEdge Space Inc. has developed a standardized 6U satellite bus and a streamlined production and operational framework that enable rapid, flexible mission deployment. Demonstrations include high-resolution optical remote sensing, LEO-based positioning experiments, and low-power IoT and maritime VDES communication. This paper summarizes the system architecture, service capabilities, and mission results such as ONGLAISAT and AE2a, highlighting the growing potential of microsatellites as an accessible and resilient infrastructure for photogrammetry and remote sensing.

Axelspace is developing the next-generation GRUS-3 constellation to meet growing market demands for flexibility, higher frequency, and interoperability, building on the operational experience of GRUS-1. This paper introduces the GRUS-3 mission, scheduled for a 7-satellite launch in 2026. The constellation aims to achieve daily revisits in mid-latitudes and triple the daily area coverage of GRUS-1. Key features include 2.2m panchromatic resolution, an added Coastal Blue band, and sensor compatibility with Sentinel-2. GRUS-3 will offer flexible data products via the AxelGlobe platform to serve diverse user needs.

This paper introduces the mission of the optical satellite “MarVi,” designed to acquire high-resolution, high-frequency three-dimensional data. The mission aims to build a constellation of eight small satellites equipped with 40 cm-class high-resolution imaging capabilities. The coordinated operation of multiple satellites will enable stereoscopic observations and wide-area coverage exceeding 50 km in width. The mission's objective is to provide a digital twin environment applicable to a broad range of public and industrial sectors.

This paper introduces the initiatives of Institute for Q-shu Pioneers of Space, Inc. (iQPS), a space development company founded in Fukuoka in 2005 with the aim of establishing a space industry in the Kyushu region. iQPS is engaged in the development, manufacturing, and operation of small SAR satellites named as “QPS-SAR,” and provides high-resolution Earth observation data obtained from these satellites. The company ultimately aims to build a constellation of 36 QPS-SARs, enabling near-real-time monitoring capabilities and significantly enhancing the utility of satellite data in various fields such as disaster response, infrastructure management, and environmental monitoring.

Synspective is a solutions provider that owns and operates its own SAR satellite constellation. By developing and operating small SAR satellites, it builds its satellite constellation and generates and provides data. Additionally, by leveraging its unique data analysis capabilities, Synspective offers data-driven solutions to various challenges faced by the world.

Underground pipes, such as gas and water pipes, are essential components of social infrastructure. However, since these pipes are located underground, it is difficult to accurately determine their position and shape. On the other hand, in recent years, it has become easy to capture photographs using smartphones and digital cameras, enabling the generation of TIN meshes using techniques such as Structure from Motion (SfM). By utilizing these sensors, there is potential to efficiently acquire 3D information. In this paper, we discuss a method for automatically creating 3D surface models from TIN mesh using the RANSAC algorithm. An exhaustive search of all possible parameter combinations was performed to determine the optimal parameters. Furthermore, evaluation experiments using real-world data confirmed that the method can appropriately model underground pipes.