FAST Active reflection surface shape adjustment model research

Résumé fourni par la source

FAST, the Five-hundred-meter Aperture Spherical radio Telescope, is the world’s largest single-aperture and most sensitive spherical radio telescope, has opened a new era of exploration of the mysteries of the universe. This paper focuses on the FAST active reflector shape adjustment model. We first established the reflector adjustment model based on the main cable nodes. Considering the limited signal reception range, we then established the judgment model of signal reception, taking the fit degree of the working paraboloid and the signal reception ratio of the feed cabin as the objective function, and eventually established the comprehensive decision-making model of the shape adjustment of the FAST active reflector. We used the improved PSO (Particle Swarm optimization) algorithm and the RMS (Root Mean Square) value of the radial deviation of the discrete nodes to improve the speed and accuracy of the model. After simulation and analysis, the model algorithm has good robustness and stability and has great reference value in practical applications.