Automatic compensation method based on angular speed meter of mobile satellite antenna
A mobile satellite and automatic compensation technology, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, and measurement devices, etc., which can solve the problems of increasing costs, not being suitable for carriers, and high calibration costs. To achieve the effect of accurate compensation method
Active Publication Date: 2012-07-04
BEIJING DASHUN WILL TECH
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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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[0024] The central idea of the present invention is to dynamically identify the zero point in the current temperature environment by using the signal intensity change output by the antenna, to achieve compensation for zero point drift at any time, and to ensure the antenna pointing accuracy and communication quality. The specific process is: using experimental methods to collect the signal strength data distribution, establishing the error angle-signal strength mathematical model, deriving the signal strength formula of the cone scanning motion, combining the actual cone scanning data to obtain the error angle of the antenna pointing, and completing the diagonal velocity The correction of the random noise at the zero point, finally, combined with the historical record of the error angle sequence, the judgment and compensation of the constant value drift of the zero point of the angular velocity meter, and then the accurate correction of the zero point of the angular velocity me...
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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...
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IPC IPC(8): G01P21/02
Inventor 尚杨吴宏伟
Owner BEIJING DASHUN WILL TECH
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