Method for estimating and accurately tracking satellite position by using reflector antenna

A satellite position and reflector technology, applied in the field of communication engineering, can solve problems such as TE21 tracking performance degradation, and achieve the effect of saving hardware costs, wide application range, and saving system costs

Inactive Publication Date: 2019-02-26
CHINA ELECTRONICS TECH GRP NO 39 RES INST
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  • Abstract
  • Description
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Problems solved by technology

[0003] In order to solve the problem of TE21 tracking performance degradation in the case of weak differential channel signals existing

Method used

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  • Method for estimating and accurately tracking satellite position by using reflector antenna
  • Method for estimating and accurately tracking satellite position by using reflector antenna
  • Method for estimating and accurately tracking satellite position by using reflector antenna

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Embodiment Construction

[0042]Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0043] A method for estimating and accurately tracking the satellite position of the reflector antenna proposed in this embodiment is different from the current communication antenna single-pulse self-tracking or program-guided tracking method, which is realized by controlling the mechanical axis of the antenna to perform conical scanning around the satellite The main steps are: drive the antenna to scan in azimuth and elevation respectively, record the angular position information of the antenna and the AGC voltage during the scan, and roughly estimate the satellite's approximate position; then the antenna control unit drives the antenna to point to the satellite's approximate position, and orbit Do conical scanning, according to the angle information output by...

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Abstract

The invention provides a method for estimating and accurately tracking the satellite position by using a reflector antenna. The method is different from the conventional communication antenna monopulse self-tracking or program-guided tracking methods. The method is realized by controlling the antenna mechanical axis to perform conical scanning around the satellite. The main steps are as follows: driving the antenna to perform azimuth and pitch scanning, recording the angular position information of the antenna and AGC voltage while scanning, and roughly estimating the satellite approximate position; driving the antenna to point to the satellite approximate position and perform conical scanning around the approximate position by an antenna control unit; according to the angle information and AGC voltage information output by an angle encoder during the scanning process, further estimating the satellite position by data correlation processing and the least squares method, and sending theestimation error to an antenna driving unit to realize the correction of the satellite pointing by the antenna. With the scanning and tracking going on, the method can achieve accurate tracking of satellites.

Description

technical field [0001] The invention relates to the field of communication engineering, in particular to a method for estimating the position of a satellite by a reflector antenna and realizing precise tracking. Background technique [0002] For deep space measurement and control large-aperture antennas, its main purpose is to achieve precise tracking of deep space targets, but when the target is very far away from the measurement and control station, the strength of the sum signal and difference signal received by the antenna will be greatly reduced. Attenuation, the signal-to-noise ratio of the tracking error signal generated by system synthesis will decrease, and the tracking performance will deteriorate when using the TE21 mode commonly used in traditional space detection and tracking for single-pulse self-tracking. In order to achieve precise tracking of distant targets by large deep-space TT&C antennas, it is necessary to supplement this situation with a new tracking s...

Claims

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Application Information

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IPC IPC(8): H01Q3/10H01Q3/00G01S5/04
CPCH01Q3/10G01S5/04H01Q3/005
Inventor 凡国龙张骏段玉虎李华张录健刘敏任文龙郭建设
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST
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