Microsatellite mock-up for verification of docking operations in laboratory

Abstract

This paper presents the design, characterization, and experimental validation of a microsatellite mock-up for laboratory simulation of close-proximity relative dynamics between small satellites. The mock-up is suspended on flat air bearings, allowing 2D motion on a low-friction table, effectively emulating free-fall dynamics. The relative pose control system is a key component, and assessing its performance is the main goal of this work. Relevant subsystems are described in detail, highlighting how laboratory-grade components are used to simulate satellite subsystem behavior. System parameters crucial for pose control development are experimentally evaluated, including inertial properties and propulsion system characteristics. Experimental results demonstrate the simulator’s capability to execute pose maneuvers and track desired trajectories. The simulator provides a versatile testbed for docking systems and other enabling technologies for close-proximity operations.