Design of Signal Capture and Tracking Scheme for Shipborne X Frequency Band Measurement and Control System

Abstract

The capture and tracking of satellite signals is the basis for ship stations to measure and control satellites. In the measurement and control of X frequency band, the satellite is far away from the ship station and has large maneuverability, which results in weak signal, big Doppler frequency shift and big dynamics, and the signal is affected by the gravitational force of the large celestial bodies and the solar wind, the phase may be disturbed. This paper designed a signal capturing and tracking method for X band satellite by constructing a model to analyze the two order PLL, three order PLL and two order frequency-locked loop.