Digital beam tracking method for molecular matrix of satellite mobile communication phased-array antenna

A technology of satellite mobile communication and phased array antenna, applied in the field of satellite communication, can solve the problems of slow motion, decreased communication quality, and decreased reliability, and achieves the effects of reduced burden, fast change, and large system bandwidth

Active Publication Date: 2012-06-27
SOUTHEAST UNIV
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Problems solved by technology

However, due to the slow movement speed of the mechanical servo mechanism, it often cannot keep up with the bumping, shaking, and vibration of the carrier, so that under dynamic conditions, the beam deviates from the direction of the satellite, resulting in a decrease in communication quality and reliability

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  • Digital beam tracking method for molecular matrix of satellite mobile communication phased-array antenna
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  • Digital beam tracking method for molecular matrix of satellite mobile communication phased-array antenna

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Embodiment Construction

[0039] The present invention will be described below with reference to the accompanying drawings.

[0040] In the satellite mobile communication antenna, the beam tracking speed of the traditional mechanical servo tracking antenna of the ground station is slow, and it is often difficult to overcome the carrier's bumps and shakes, causing its main beam to deviate from the direction of the satellite, and its reliability is low. The phased array antenna is more and more widely used in satellite mobile communication because its beam angle can be changed rapidly, which fully satisfies the tracking of high-gain beam in the mobile state. There are many beam tracking schemes for phased arrays:

[0041] 1) The pitch and azimuth angle information in the inertial coordinate system is given by the gyroscope, and the beam direction is adjusted by the phased array to overcome the attitude change of the carrier.

[0042] 2) The main beam is adjusted by the strength or phase of the specific ...

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Abstract

The invention relates to a digital beam tracking method for a molecular matrix of a satellite mobile communication phased-array antenna. The digital beam tracking method is characterized by comprising the following steps: dividing a phased array into 4 quadrants, namely the first quadrant, the second quadrant, the third quadrant and the fourth quadrant, according to the rectangular coordinate system, wherein the beam direction of each unit in each quadrant is controlled by united phased control logic; each quadrant comprises a power combiner (1), power dividers (2) and a tracking and receiving module (3); signals of the 4 quadrants share a tracking signal processing module (6) and a power combiner (4); power synthesis is independently carried out to the signal of each quadrant by the respective sub-array power combiner (1) to form the power-synthesized signal; then each quadrant respectively divides the power-synthesized signal into two signals by the power divider (2) of each quadrant. The digital beam tracking method can stably and reliably track the satellite under high-speed movement shaking conditions of a carrier.

Description

technical field [0001] The molecular array digital beam tracking method for satellite mobile communication phased array antenna is an antenna beam tracking method based on phased array technology for mobile carrier and satellite communication. This method can be directly applied to the field of satellite mobile communication. The invention belongs to the technical field of satellite communication. Background technique [0002] In the field of satellite and terrestrial communications, the huge path loss requires high-gain directional antennas to compensate for the link loss, thus limiting its application to fixed antenna communications. With the needs of human travel, people urgently need high-speed data interconnection and Internet access in the mobile state on cars, trains, airplanes, and ships, and mobile carriers are often in areas that cannot be covered by ground mobile cellular networks. Driving, such as mountains, seas, transoceanic flights, etc. At this time, it is ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/30H01Q1/27
Inventor 陈鹏洪伟陈继新陈喆张慧汤红军
Owner SOUTHEAST UNIV
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