Application of GNSS antenna vibration simulator to validation of dynamic displacement detection systems

Abstract A Global Navigation Satellite System (GNSS) antenna vibration simulator was developed to support the validation of dynamic position sensing systems. Based on a stepper motor mechanism, the device generates controlled reciprocating motion through a connecting rod, o˛ering a simple and user-friendly design. Field experiments were conducted to assess its performance, with motion parameters – displacement, velocity, and acceleration – measured and compared against theoretical sinusoidal models. The simulator was employed to evaluate GNSS+Inertial Measurement Unit (IMU) receivers and associated software designed for detecting and monitoring dynamic displacements. High-frequency GNSS data, collected under real-world conditions at the KGHM Cuprum R&D Centre in Lubin, Poland, were processed to extract antenna position time series and assess simulated motion accuracy. Fourier transform analysis of the displacement signals confirmed the simulator’s e˛ectiveness in replicating dynamic motion, demonstrating its suitability for testing GNSS-based displacement monitoring systems.