A self-management method for antennas on-orbit for dual-antenna non-fixed ground-pointing satellites

Abstract

The present invention relates to an antenna on-orbit self-management method for dual-antenna non-fixed ground-pointing satellite antennas: ahead of the time corresponding to the first preset time period when the satellite passes through the visible arc section of the ground receiving station, the satellite is controlled to stop attitude scanning, and Keep the satellite attitude at the inertial three-axis pointing at the moment when the scan is stopped, and then, according to the autonomous real-time estimated delay in the orbit, the antenna pointing at the time corresponding to the first preset time period at the current moment is connected to the satellite center of mass-ground receiving station The included angle information and the preset quasi-duty antenna determination criteria select and record the quasi-duty digital transmission antenna channel; when the satellite enters the visible arc of the designated ground receiving station, according to the quasi-duty data transmission within the first preset time period in the future Antenna channel records, determine the on-duty digital transmission antenna channel and the corresponding data transmission arc, and carry out data transmission to the ground until the satellite leaves the visible arc of the ground receiving station. The satellite is then automatically controlled to resume attitude scanning.

Description

technical field [0001] The invention relates to an on-orbit autonomous optimization and implementation method of a satellite data transmission antenna, which is suitable for the ground data transmission of satellites without a fixed pointing to the ground under various orbits and various attitude control modes, and is especially suitable for inertial observation of any space in the universe Earth-to-earth data transmission of medium and low orbit space science satellites. Background technique [0002] The main task of the satellite-to-ground data transmission is to send the wave tube assembly to amplify the payload and platform data processed according to the requirements when the satellite enters the receiving range of the ground data station (visible arc), and then pass the data transmission antenna Downlink ground data station. After the satellite is out of the receiving range of the ground data station, it stops sending data to the ground. Therefore, when the satellite...

AI Technical Summary

Problems solved by technology

For the implementation of ground control, at least one track in advance to complete accurate prediction and command note, the long-term operation is difficult and the workload is relatively large

[0007] Especially for satellites whose attitude on-orbit is determined and controlled autonomously, and the orientation axis of the satellite changes or the spin direction of the orientation axis changes in an attitude control mode, it is difficult for the ground to pass satellites that are several orbits ahead of time. The attitude telemetry data accurately calculates the ground attitude and transit attitude change process that meets the ground receiving and tracking accuracy requirements of the antenna beam, which may lead to the loss of data transmission data

However, the method of stopping the attitude scan a few tracks in advance will lose a lot of observation time

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