Dynamic tracking satellite antenna

A satellite antenna and dynamic tracking technology, which is applied in the field of satellite antennas, can solve the problems that satellite antenna alignment accuracy depends on measurement accuracy, increase the requirement of gyroscope parameters, and the tracking accuracy is far inferior, so as to meet the requirements of reducing accuracy and improving accuracy , low cost effect

Inactive Publication Date: 2011-03-02
郴州希典科技有限公司
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Problems solved by technology

[0004] This method has the following disadvantages: ① The alignment accuracy of the satellite antenna during the movement is completely dependent on the measurement accuracy of the inertial navigation system such as the gyroscope
Therefore, high-precision sensors such as fiber optic gyroscopes and laser gyroscopes can only be used, resulting in a substantial increase in overall costs
②The use of GPS can only obtain the reference pitch angle of the location of the satel

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Embodiment Construction

[0020] Under the guidance of the working principle of the above system, there can be a variety of control strategies and satellite search and tracking implementation methods.

[0021] A dynamic tracking satellite antenna, including azimuth attitude detection, signal level detection 3 and servo system three parts; the main control servo system is a Z-axis adjustment stepping motor; the azimuth attitude detection part only consists of a Z-axis gyroscope 5 and an accelerometer 6 components; the Z-axis gyroscope 5 measures the movement direction and speed of the antenna 2 in the horizontal direction, and obtains the offset of the antenna 2 in the horizontal direction; the accelerometer measures the angle of the antenna relative to the horizontal plane, and obtains or calculates The current pitch angle 1 and roll angle 7 of the antenna; then the received target satellite signal level is used as the basis for judging whether to align with the satellite, and the main control CPU4 is u...

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Abstract

The invention relates to a dynamic tracking satellite antenna. The antenna comprises an azimuth posture detection part, a signal level detection part and a servo system, wherein the master control servo system is a Z-axis adjusting stepping motor; the azimuth posture detection part is only formed by a Z-axis gyroscope and an accelerometer; the Z-axis gyroscope measures the moving direction and the speed of the antenna in the horizontal direction, and the included angle of the antenna relatively to a horizontal surface is measured by the accelerometer; and the servo system is controlled by a master control CPU to constantly adjust an azimuth angle, a roll angle and a pitch angle of the antenna so as to achieve the aim of dynamically tracking a satellite. The dynamic tracking satellite antenna has the advantages of low cost, simple structure and good tracking effect.

Description

technical field [0001] The invention relates to a satellite antenna, in particular to a dynamic tracking satellite antenna capable of adjusting azimuth angle and elevation angle during movement. Background technique [0002] Mobile satellite antennas refer to antennas installed on mobile carriers, such as cars, trains, ships, etc. Because broadcasting satellites and communication satellites all belong to fixed-point satellites (ie, synchronous orbit satellites), the satellites are positioned at about 40,000 kilometers above the equator. The satellite antenna is also a directional antenna. The beam width of this antenna is very narrow. To ensure that the signal transmission is not interrupted during the rapid movement of the carrier, it is necessary to ensure that the antenna is always accurately aligned with the target satellite. [0003] During the movement of the mobile carrier, due to the change of the road turning direction and the influence of the slope, the azimuth an...

Claims

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Application Information

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IPC IPC(8): H01Q1/27H01Q3/02
Inventor 张强周晓辉
Owner 郴州希典科技有限公司
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