Geographic Location Systems

Data
Sectors	Data
Contact	Wilfred Pinfold
Topics	Artificial Intelligence Data Sovereignty Digital Twins Geographic Location Systems Intelligence Augmentation Knowledge Management Mobile Device and Communications Networks Open Data Open Source Predictive Modeling Sensor Technology Software Development Methods Standards and Interfaces
Activities Indoor GPS-denied First Responder Location and Tracking Solutions First Responder personnel often work indoors, underground, and in other areas without accurate GPS. Determining the location of public safety personnel working in areas without a clear view of the sky, and therefore without access to reliable GPS, and providing mechanisms to create, access and share map (building and asset) data, is the focus of this project. The objectives are to accelerate availability of improved location accuracy, comprehensive map data sources and tools, and 3D visualization to meet an array of first responder use cases. Point Cloud City - Hancock County Mississippi Develop approaches which improve indoor mapping techniques and datasets in the US to make them more common and available for use nationwide.

Authors

A Geographic Location System (GLS) is a technology that uses various methods to determine the location of a device or object on the earth's surface. The most widely used GLS technology is the Global Positioning System (GPS), which uses signals from a network of satellites to provide location and time information to users on the ground.

Technologies

Geographic Location System technologies are technologies include:

• GPS (Global Positioning System): A satellite-based navigation system that provides location and time information to users on the ground.
• DGPS (Differential GPS): A system that improves the accuracy of GPS signals by using ground-based reference stations to correct for errors in the satellite signals.
• RTK (Real-Time Kinematic) GPS: A high-precision GPS system that uses a separate radio link to provide real-time corrections and sub-centimeter accuracy.
• PPK (Post-Processed Kinematic) GPS: A method of improving the accuracy of GPS data by using data from multiple receivers and processing it after the data has been collected.
• LIDAR-based positioning: A technology that uses laser scanning and ranging to determine the position of a device.
• INS (Inertial Navigation System): A system that uses accelerometers and gyroscopes to determine position and orientation based on the movement of the device.
• A-GPS (Assisted GPS): A system that uses a combination of GPS and other location technologies, such as cell tower triangulation or Wi-Fi positioning, to improve the accuracy and availability of GPS signals.
• SBAS (Satellite-Based Augmentation Systems): A system that uses additional satellites and ground-based reference stations to improve the accuracy and integrity of GPS signals. Examples include WAAS (Wide Area Augmentation System) and EGNOS (European Geostationary Navigation Overlay Service)
• PPP (Precise Point Positioning): A technique that uses GPS measurements and precise orbit and clock information to determine positions with centimeter-level accuracy.
• Ultra Wideband (UWB) : A wireless technology that uses a wide range of frequencies to transmit data over short distances, it can be used for indoor positioning, where GPS signals are often weak or unavailable.