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Amplitude-phase error correction method suitable for tablet end-fire array antenna

An end-fire array, amplitude and phase error technology, applied in the field of amplitude and phase error correction, can solve the problems such as the lack of an antenna radar system amplitude and phase error correction method, and achieve the effects of accurate amplitude and phase error data, improved antenna performance, and flexible control

Inactive Publication Date: 2017-01-11
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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AI Technical Summary

Problems solved by technology

At present, there is no amplitude and phase error correction method for the flat-panel end-fire array antenna radar system

Method used

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  • Amplitude-phase error correction method suitable for tablet end-fire array antenna
  • Amplitude-phase error correction method suitable for tablet end-fire array antenna
  • Amplitude-phase error correction method suitable for tablet end-fire array antenna

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Embodiment Construction

[0027] A method for correcting amplitude and phase errors suitable for flat panel end-fired array antennas, the method comprising steps in the following order:

[0028] (1) Build the amplitude and phase error correction system: according to the scale of the flat-panel end-fire array antenna, design the corresponding correction network, correction extension, transceiver system, power supply system, signal and data processing system, and then connect to form a flat-panel end-fire array antenna active system;

[0029] (2) Arrange darkroom test scene: such as figure 1 As shown, set the distance from the near-field sampling surface to the antenna structure; set the near-field scanning probe sampling plane size according to the measured antenna structure size; set the near-field sampling interval; set the test frequency; set the polarization mode of the near-field scanning probe; The near-field scanning probe is hereinafter referred to as the probe in the present invention;

[003...

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Abstract

The invention relates to an amplitude-phase error correction method suitable for a tablet end-fire array antenna. The method comprises the steps that (1) an amplitude-phase error correction system is established; (2) a darkroom test scene is arrayed; (3) correction operation is performed: receiving internal correction, transmitting internal correction, receiving external correction and transmitting external correction operation is performed according to the set test system parameters, and the test result is also recorded; (4) the amplitude-phase error compensation coefficient is calculated: the amplitude-phase difference of the transmission signals of each channel of the tablet end-fire array antenna caused by different spreading paths is calculated according to the position of a near-field scanning probe; and then the receiving and transmitting amplitude-phase error compensation coefficient of each channel of the tablet end-fire array antenna is calculated through combination of the internal correction and external correction test data; and (5) wave lobe test verification is performed. The amplitude-phase error of each channel of the tablet end-fire array antenna can be accurately corrected so that the antenna performance of the tablet end-fire array in the actual application can be enhanced; and the amplitude-phase error can be realized by using the digital technology so that transplantability is high and control is flexible.

Description

technical field [0001] The invention relates to the technical field of digital array radar systems, in particular to an amplitude and phase error correction method suitable for flat panel end-fired array antennas. Background technique [0002] For the digital array radar system, the receiving beamforming eliminates the phase difference of the incident signal to different antenna units by weighting, realizes the in-phase superposition of each channel signal, and maximizes the receiving gain in the target direction; The phase of the signal transmitted by the channel is controlled so that the directional gain of the transmission reaches the maximum in a certain direction, that is, a beam is formed in this direction. The basic condition for receiving and transmitting beamforming is that the channels are required to have a certain degree of stationarity, and the amplitude and phase of each channel are consistent. [0003] However, in practical applications, due to factors such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01R29/10
CPCG01S7/4004G01R29/10
Inventor 代泽洋刘宝泉
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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