The third International Association of Geodesy (IAG) Commission 4 Symposium will bring together scientists, researchers and professionals working in the broad field of positioning and its applications.

The symposium will serve as a platform for discussing research that leverages current and emerging positioning techniques and technologies. It aims to provide both practical and theoretical solutions across a wide range of topics.

Discussions will address both technical and institutional aspects of developing GNSS backup systems, integrated positioning solutions, resilient PNT systems, and emerging LEO-based PNT techniques. The symposium will also explore space weather monitoring and forecasting through both ground-based and space-based geodetic observations. Additionally, the application of machine learning and artificial intelligence in geodesy will be examined.

The main topics to be covered include:

• Multi-frequency and multi-constellation GNSS technique
• Terrestrial and satellite-based positioning system development
• Multi-sensor fusion navigation and integrity monitoring
• Emerging positioning technologies, e.g., resilient PNT and LEO-based PNT
• Atmospheric space weather monitoring using geodetic observation techniques
• Applications of geodesy to engineering
• Artificial Intelligence technique for geodesy research

The Australian Space Summit & Exhibition is returning for its fourth consecutive year to throw a spotlight on the increasing strength of the nation’s space sector.

Coming at a critical time for the Australia’s space community, the summit will unite the sector’s most influential decision makers from across the public and private spheres over two days of presentations, discussions and displays.

The diverse agenda will feature more than 70 frontline presentations from leaders in the space and defence sectors, while presenting established and emerging industry players the opportunity for networking and discovery.

The International Geoscience and Remote Sensing Symposium (IGARSS) is the flagship conference of the IEEE Geoscience and Remote Sensing Society. The 45th IGARSS will be held in Brisbane from 3 to 8 August 2025.

The theme of IGARSS 2025 is ‘One Earth,’ and the symposium will address threats to our Earth and promote collaborative global solutions that use remote sensing technology. The event will have strong technical and social programs, and present opportunities for regional and global collaboration.

Topics to be covered include:

• The contribution of international standards for land cover and land use and guidelines for SDG reporting
• Advanced satellite remote sensing techniques for coastal hazard monitoring and risk prediction
• Advanced signal processing methods for geoscience and remote sensing applications
• Applications of remote sensing in urban climate and sustainability
• Calibration and validation of space-based imaging spectrometers during a growth era of hyperspectral data sources
• Close-range sensing of the environment
• Deep learning and remote sensing for rapid disaster response
• Earth observation foundation models
• Hyperspectral geoscience mapping in developing countries
• New satellite laser data for terrain modelling
• Quantum technology for remote sensing
• Space LiDAR: Missions, technologies, and observations