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Hybrid scanning antenna tracking method and system based on phased array, terminal and medium

A phased array antenna and hybrid scanning technology, which is applied in the field of satellite communication antennas, can solve the problems of high difficulty in implementation, frequent operations of the mechanical execution unit and the main body of the phased array antenna, and the inability to achieve the optimal array index of the phased array antenna. The effect of excellent front index, high engineering application value and short service time

Active Publication Date: 2022-01-04
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] However, the combination of the above-mentioned phased array and mechanical compensation control, on the one hand, is affected by the interference of environmental factors and the uncertainty of the compensation ability of the mechanical execution unit, resulting in the compensation control may need to be constantly updated and adjusted, so that the mechanical execution unit and the phased array antenna body The operation is too frequent, and it is difficult to realize; on the other hand, the compensation based on the strongest signal as the reference direction cannot make the phased array antenna have a better array index, and the speed and accuracy of scanning antenna tracking need to be further improved

Method used

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  • Hybrid scanning antenna tracking method and system based on phased array, terminal and medium
  • Hybrid scanning antenna tracking method and system based on phased array, terminal and medium
  • Hybrid scanning antenna tracking method and system based on phased array, terminal and medium

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Embodiment 1

[0059] Embodiment 1: A hybrid scanning antenna tracking method based on a phased array, such as figure 1 shown, including the following steps:

[0060] S1: Calculate the theoretical azimuth and theoretical elevation angles of the phased array antenna alignment based on the ephemeris information, carrier position information and carrier attitude information, and combine the current azimuth and current elevation angles in the normal direction of the phased array antenna to determine the theory respectively Adjust the azimuth angle and theoretically adjust the pitch angle;

[0061] S2: When the theoretically adjusted azimuth angle and the theoretically adjusted elevation angle exceed the electronic scanning range, the compensation azimuth angle and compensation elevation angle of the phased array antenna are determined in combination with the maximum pitch direction search angle and maximum azimuth direction search angle preset by the frame search algorithm; If the theoretically...

Embodiment 2

[0089] Embodiment 2: Hybrid scanning antenna tracking system based on phased array, such as Figure 5 As shown, it includes phased array antenna components, mechanical platform components and wave control modules. The phased array antenna component is generally configured with a transmitting amplitude and phase adjustment T component, a receiving amplitude and phase adjustment R component, and a frequency conversion channel component. The phased array antenna component and the mechanical platform component are all public technologies, so I won’t repeat them here.

[0090] The wave control module is equipped with a theoretical calculation unit, a compensation calculation unit, a rough alignment unit, a fine alignment unit, and a scanning tracking unit. Among them, the theoretical calculation unit is used to calculate the theoretical azimuth and theoretical elevation angle of the phased array antenna alignment according to the ephemeris information, carrier position information...

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Abstract

The invention discloses a hybrid scanning antenna tracking method and system based on a phased array, a terminal and a medium, and relates to the technical field of satellite communication antennae, and the main points of the technical scheme are that the method comprises the steps: detecting a theoretical adjustment azimuth angle and a theoretical adjustment pitch angle; when the theoretical adjustment azimuth angle and the theoretical adjustment pitch angle exceed the electric scanning range, determining a compensation azimuth angle and a compensation pitch angle of the phased-array antenna; controlling a mechanical platform to adjust the position of a phased-array antenna according to the compensation azimuth angle and the compensation pitch angle, and controlling phased-array beam pointing to complete coarse alignment; when the AGC level value of the received satellite signal is not greater than a threshold value, carrying out the satellite alignment through a picture frame search algorithm, and controlling the mechanical platform to adjust the position of the phased-array antenna to complete fine alignment; and after fine alignment, scanning and tracking the target satellite through conical scanning and tracking. According to the invention, the phased-array antenna can be quickly aligned and tracked in real time, and the antenna is ensured to have a better array surface index while real-time tracking is completed.

Description

technical field [0001] The present invention relates to the technical field of satellite communication antennas, more specifically, it relates to a tracking method, system, terminal and medium based on a phased array hybrid scanning antenna. Background technique [0002] The low-orbit satellite communication system has the advantages of global coverage, low transmission delay, low power consumption, and strong invulnerability, and will play an important role in future global personal communications. Due to the fast movement of low-orbit satellites, it is more difficult to align and track satellites. How to quickly find, lock, and track target satellites in real time is a key issue in realizing high-quality communication of low-orbit satellites. [0003] Traditional satellite communication systems generally use a narrow-beam reflector antenna and install it on a three-dimensional mechanically stable platform, relying on the stable platform and servo system to ensure that the ...

Claims

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Application Information

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IPC IPC(8): H04B7/185H01Q3/02
CPCH04B7/185H01Q3/02
Inventor 黄健杨其聪何博
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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