Towerless Phase Calibration Method Based on Piecewise Linear Fitting

Starting from the problems of four kinds of no tower calibration methods, analyzed the phase characteristics curve of a ship-borne Unified C-Band (UCB) system, and refined the changing regulations of the offset phase curve and the tower phase curve, proposed a towerless phase calibration method based on piecewise linear fitting, the feasibility and practicability of the method is verified by tracking the different frequency beacon balls together with the theodolite, and comparing the tracking data with the theodolite's.