Design of Relay Satellite High-Precision Auto-Tracking System
In order to achieve high-speed data transmission between the user satellite antennas and relay satellite,single channel monopulse tracking systems are used to realize high-precision tracking.The design of auto tracking system based on integration of Ka-band tracking receiver and Servo controller is described in this paper,where TE21 mode coupler is used on Ka-band antenna.Tracking receiver model is established on the nonlinear dynamics model.Auto-tracking pointing error is provided by the model.Comparing the simulation with experiment results,the math model is correct and reliable.The Auto-tracking system is test on far-field.Tracking receiver's S curve,dynamic performance and pointing error are applied to test.The experiment results demonstrate the auto-tracking system function and performance meets the requirements of task by precision pointing.
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