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Electronic beam scanning tracking demodulation method suitable for phased-array antenna

A phased array antenna and beam scanning technology, which is applied in the field of electronic beam scanning tracking and demodulation, can solve the problem that the synthetic beam cannot work simultaneously with beacon signals and communication signals, and achieves the effects of high reliability, simple structure, and easy upgrade

Pending Publication Date: 2022-02-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0003] Due to the narrowband characteristics of the phased array antenna, the received synthetic beam cannot work on the beacon signal and the communication signal at the same time

Method used

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  • Electronic beam scanning tracking demodulation method suitable for phased-array antenna
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  • Electronic beam scanning tracking demodulation method suitable for phased-array antenna

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] An electronic beam scanning tracking demodulation method suitable for phased array antennas, comprising the following steps:

[0030] (1) The signals received by each sub-array of the receiving antenna enter the receiving beam synthesis module, and are synthesized into a radio frequency signal under the control of the beam control module, wherein the beam control module receives the working frequency band information, beam scanning signal, angle error signal and other necessary information Finally, calculate and set the real-time amplitude and phase control values ​​of each sub-array;

[0031] (2) After the radio frequency signal is processed by the down converter, AD, digital down converter (DDC) and other signal ...

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Abstract

The invention discloses an electronic beam scanning, tracking and demodulating method suitable for a phased-array antenna, and belongs to the technical field of radio frequency antenna self-tracking. The method comprises the processing steps of phased array receiving antenna, beam control, working frequency band control, down-conversion, AD, DDC, scanning control, frequency domain signal power detection, angle error demodulation and the like, can work on beacon signals, measurement and control signals and communication signals of various bandwidths, can detect angle error information of antenna receiving beams to satellites, and is a basic algorithm for realizing satellite self-tracking of a moving satellite communication ground station. The method can be realized based on hardware platforms such as an FPGA, a DSP, a GPU and the like, has the advantages of simple structure and algorithm, low cost, high response speed, high integration degree, simplicity in debugging and the like, and is an important improvement on the prior art.

Description

technical field [0001] The invention relates to the technical field of radio frequency antenna self-tracking, in particular to an electronic beam scanning tracking demodulation method suitable for phased array antennas. Background technique [0002] The phased array antenna used in the mobile satellite communication ground station mainly has two tracking modes: single-pulse mode tracking or electronic beam scanning tracking based on the two-dimensional array. The electronic beam scanning tracking mode has the characteristics of low cost, simple composition, and easy debugging, so it is more suitable for the phased array antenna of the communication in motion. [0003] Due to the narrow-band characteristics of the phased array antenna, the received synthetic beam cannot work on the beacon signal and the communication signal at the same time. Therefore, in the initial satellite search stage of satellite communication, the received synthetic beam works on the beacon signal of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/34H01Q3/28H01Q3/00H04B7/185
CPCH01Q3/34H04B7/1851H01Q3/28H01Q3/005
Inventor 李强慈国辉李靖
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP