Indoor GPS for Robots: ±2cm Precision Tracking Demo | Marvelmind
What This Video Covers
This product demo showcases Marvelmind's ultrasonic indoor positioning system tracking two mobile beacons simultaneously with ±2cm accuracy. The system uses time division multiple access (TDMA) to manage multiple beacon updates at approximately 8Hz per beacon. Stationary beacons positioned on walls provide trilateration reference points, while location data streams via USB, UART, SPI, or I2C interfaces. This real-world demonstration validates the system's capability for autonomous indoor robot navigation, drone flight, and warehouse automation applications.
Key Takeaways
- Achieves ±2cm positioning accuracy indoors without GPS signals
- Tracks multiple mobile beacons simultaneously using TDMA protocol
- Each beacon updates at ~8Hz when tracking 2 units (16Hz total system rate)
- Stationary wall-mounted anchors provide trilateration reference geometry
- Supports 4 data interface standards: USB, UART, SPI, and I2C
- Enables autonomous robot navigation, drone flight control, and warehouse automation
- Time division multiple access allows flexible multi-unit deployment
Who Should Watch This
Roboticists, drone operators, and warehouse automation engineers seeking reliable indoor positioning systems. This demo proves that centimeter-level indoor tracking is achievable without GPS, solving the critical navigation challenge for autonomous mobile robots operating in enclosed environments where satellite signals cannot penetrate.
FAQ
Detailed Overview
Marvelmind's indoor positioning system delivers enterprise-grade location tracking for mobile robots, autonomous drones, and warehouse equipment operating in GPS-denied environments. This 20-second demonstration captures live tracking of two mobile beacons held in hand, illustrating the system's real-time performance with ±2cm positional accuracy. The architecture employs time division multiple access (TDMA) protocol, allowing each mobile beacon to update at approximately 16Hz divided by the number of beacons—roughly 8Hz per unit with accounting for switching overhead. Stationary ultrasonic beacon anchors mounted on facility walls establish reference geometry for trilateration calculations. The system transmits location data through multiple industry-standard interfaces: direct USB connection to PC via virtual UART, native UART serial communication, SPI (Serial Peripheral Interface), or I2C (Inter-Integrated Circuit). This connectivity flexibility enables seamless integration with robot controllers, flight computers, and warehouse management systems. The demonstration proves TDMA-based ultrasonic positioning's viability for simultaneous multi-unit tracking scenarios common in autonomous fleet operations, forklift tracking applications, and indoor drone navigation.
Topics
Related Resources
📍 Need precise indoor positioning for your project?