Method for controlling mobile satellite tracking antenna system

Abstract

The invention provides a control method for portable satellite tracking antenna system, comprising a plurality of procedures: receiving and detecting the satellite signal if the signal is blocked; automatic tracking mode of the satellite signal is carried out if size of a level for receiving the signal is recoverable when the antenna is rotated 360 degrees; the maximal variation of the signal level measured by the antenna after rotated 360 degrees and a normal temperature noise signal level are compared if the size of the level for receiving signal is unrecoverable; the satellite searching mode is carried out when the maximal variation of the signal level exceeds range of the normal temperature noise signal level; and drive of a rotary motor of the antenna is stopped when the maximal variation of the signal level is in the range of the normal temperature noise signal level.

Description

technical field [0001] The present invention relates to a mobile satellite tracking antenna system, and more particularly, to a control method of a mobile satellite tracking antenna system that prevents unnecessary electric power consumption and the like. Background technique [0002] Recently, since broadcasting and position tracking services via artificial satellites are widely used, mobile satellite tracking antennas for receiving signals transmitted from artificial satellites are mounted on mobile bodies such as vehicles and ships for use. The satellite tracking antenna mounted on the mobile body has the function of sending and receiving radio waves to and from artificial satellites for broadcasting and position tracking. [0003] However, the traveling direction of a mobile body such as a vehicle changes at any time. In addition, the failure state of radio wave transmission and reception caused by surrounding buildings etc. installed on the ground also changes accordin...

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Problems solved by technology

[0006] In this way, in the existing satellite search method, if a signal of a recoverable level cannot be detected due to obstacles, predetermined operations such as antenna rotation, angular velocity measurement, and rotation angle measurement are repeated until a recoverable satellite signal is received again.

However, when the vehicle is in the shadow area where the satellite signal is blocked for a long time such as an underground parking lot or a tunnel, if the existing satellite search method is used, the antenna must be continuously rotated.

Therefore, there will be various problems such as generating noise in the system and shortening the long-term life of the drive unit.

Even if the hybrid method of angular velocity sensors is used, there will be problems such as accumulative errors of the sensors caused by simple repeated operations to initialize the system, or the need to artificially rotate the antenna at a certain time interval.

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