An analog curved surface calibration system and method for an all-airspace phased array antenna
A phased array antenna and calibration system technology, applied in the direction of antenna radiation pattern, etc., can solve the problems of poor feasibility, heavy workload, large error, etc., and achieve the effect of ensuring work performance
Active Publication Date: 2021-11-09
ISHARECLOUD TECH CO LTD
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Problems solved by technology
[0003] Therefore, only after the phased array antenna is calibrated can it effectively point and track the target and establish a radio link; at present, there are mature calibration methods for the one-dimensional phased array antenna and the two-dimensional planar phased array antenna, but for For three-dimensional full-space phased array antennas, if a calibration method similar to one-dimensional and two-dimensional is used, there will be problems of heavy workload, poor feasibility, and large errors
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[0031] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0032] Such as figure 1 As shown, an analog curved surface calibration system for a full-space phased array antenna includes computer equipment, spatial position measurement components, calibration antenna components, a phased array antenna under test and a digital signal processing platform;
[0033] The digital signal processing platform is respectively connected with the calibration antenna assembly, the phased array antenna under test and the computer equipment, and the computer equipment is also connected with the spatial position measurement assembly;
[0034] The computer equipment is used to control the relative positional relationship between the calibration antenna component and the measured phased array antenna to form an ideal e...
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The invention discloses a system and method for calibrating a simulated curved surface of an all-airspace phased array antenna, including computer equipment, a spatial position measurement component, a calibration antenna component, a phased array antenna to be tested, and a digital signal processing platform; the digital signal processing The platform is respectively connected with the calibration antenna assembly, the phased array antenna under test and the computer equipment, and the computer equipment is also connected with the spatial position measurement assembly; the computer equipment is used to control the relative positional relationship between the calibration antenna assembly and the phased array antenna under test Form an ideal electric surface, realize omnidirectional target simulation, and at the same time transmit the measurement results of the spatial position measurement components to the digital signal processing platform, and control the calibration work of the digital signal processing platform; the digital signal processing platform is used for computer equipment. The signal control command completes the calibration of the phased array antenna under test. The invention realizes omnidirectional target simulation and high-efficiency calibration of the phased array in the whole airspace, and is beneficial to ensure the working performance of the antenna.
Description
technical field [0001] The invention relates to antenna calibration, in particular to a method for calibrating an antenna by a simulated curved surface calibration system of a full-space phased array antenna. Background technique [0002] At present, in radio equipment such as mobile communication base stations, detection stations, and satellite communications, phased array antennas are more and more widely used. The accuracy of beamforming, beam steering, and search and capture of a phased array antenna depends on the initial phase accuracy and phase shifting accuracy of the antenna array elements. The phased array antenna using digital beamforming has extremely high phase shifting accuracy, so the antenna area The initial phase accuracy calibration becomes the decisive factor of the antenna performance. There are two main factors that affect the phase of the antenna array element: one is the array element space position error introduced by the array structure and array el...
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IPC IPC(8): G01R29/10
Inventor 曾新德
Owner ISHARECLOUD TECH CO LTD