Sensor Fusion Positioning Test System Using RTK and Error Modeling

The patent uses a sensor simulation unit to generate simulated sensor outputs that copy the behavior of real sensors under various conditions. Instead of physically moving the DUT with robotic mechanisms, the system creates virtual sensor data that mimics what real sensors would produce during actual movement and environmental changes. This copying approach eliminates the need for complex robotic test equipment while maintaining testing effectiveness.

The patent implements an error model unit that dynamically adjusts simulation parameters based on the selected sensor model from the database. Instead of using fixed generic error values, the system retrieves specific parameters from real sensor datasheets (such as noise characteristics, bias, scale factor errors) and applies them to the simulation. This parameter-driven approach allows the test system to accurately represent the specific error characteristics of different sensor types while maintaining ease of use through automated parameter management.