Automatic compensation method based on angular speed meter of mobile satellite antenna

Abstract

The invention discloses an automatic compensation method based on an angular speed meter of a mobile satellite antenna. The automatic compensation method comprises the steps of: establishing an error angle-signal intensity mathematic model according to a practical measurement result by a way that the angular speed meter and an antenna surface are synchronously fixed and utilizing the phenomenon that the signal intensity of an antenna is distributed unevenly; in combination with cone scanning and formula replacement, deducing a relation of the error angle and direct-current component and alternating-current component of the antenna signal intensity; and performing zero-point constant-value drifting calculation of the angular speed meter by using a method of judging historical data; finally finishing omnibearing compensation of the zero-point drifting of the angular speed meter. According to the automatic compensation method, a process of dynamically identifying the zero point of the angular speed meter under current environment temperature by change of the antenna signal intensity is realized and proved by a test, and the compensation process is accurate, reliable and effective, so that the automatic compensation method is in particular suitable for use in an occasion where the zero point of the angular speed meter cannot be calibrated.

Description

Technical field [0001] The invention relates to an automatic compensation method for a mobile satellite antenna, in particular to an automatic compensation method based on an angular velocity meter, belonging to the field of automatic control. Background technique [0002] Mobile satellite communication antennas are widely used on mobile carriers such as vehicles, ships, and airplanes. Among them, the basic elements of C-band and Ku-band satellite communication antennas are: the communication antenna and the target satellite keep the relative direction consistent. The angular velocity meter is an important attitude sensor inside the satellite communication antenna. The angular velocity meter signal processing method is directly related to the quality of the mobile satellite communication antenna signal and the resistance to external interference. [0003] At present, satellite communication antennas with high positioning accuracy and good performance use inertial navigation modules...

AI Technical Summary

Problems solved by technology

Although these three methods can solve certain problems, they all have fatal flaws. The first method is not suitable for the environment where the carrier cannot be static, such as a ship; the second method is expensive to calibrate, takes a long time, and is not suitable for mass production ; The accuracy of the third method depends on the accuracy and dynamic response capability of the inclination sensor, which increases the complexity of the equipment and increases the cost

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