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Broadband phased array radar transmit-receive channel calibration method

A broadband phased array, radar transceiver technology, applied in the radar field, can solve the problem of high cost, achieve the effect of improving test efficiency, high reliability, and reducing the amount of equipment

Active Publication Date: 2017-11-10
CNGC INST NO 206 OF CHINA ARMS IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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This method is expensive

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  • Broadband phased array radar transmit-receive channel calibration method
  • Broadband phased array radar transmit-receive channel calibration method
  • Broadband phased array radar transmit-receive channel calibration method

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Embodiment Construction

[0029] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0030] see Figure 4 , the inventive method adopts same physical connection mode for four calibration work, set up an optical fiber time-delay device (for example time-delay 50us) at the far-field place of radar antenna, this equipment signal input and output end connects a standard gain loudspeaker respectively, reasonable Use the attenuator for gain control.

[0031] For receiving channel calibration, in narrow band, select one channel to transmit the signal, after passing through the optical fiber delay device, all fronts receive at the same time, by processing and analyzing the received data on the front, you can get the phase value of each channel, and then get the calibration data ; In the case of broadband, a transmission channel is also used to transmit the broadband signal. After passing through the optical fiber delay device, all channels collect the b...

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Abstract

The invention relates to a broadband phased array radar transmit-receive channel calibration method. A fiber time-delay device is used to complete the antenna far field transmit-receive channel calibration, for the reception channel calibration, one emission channel emits, after passing through the fiber time-delay system, all the reception channels receive, the phase matching is completed by the narrowband, and the frequency calibration and phase matching can be completed by the broadband; for the emission channel calibration, one reception channel is selected to receive, all of the reception channels are successively traversed, the phase matching is completed by the narrowband, and the frequency calibration and phase matching can be completed by the broadband. The four calibration works of the method adopt the same physical connection manner, the test efficiency is greatly improved, signals are generated by using the same frequency source, and the reliability is high.

Description

technical field [0001] The invention belongs to the field of radar technology, and in particular relates to a method for calibrating a transceiver channel of a broadband phased array radar, which is used for calibrating the transceiver channel of a phased array radar. Background technique [0002] Broadband phased array radar has the advantages of flexible beam scanning, large system dynamic range, high reliability, and high resolution. It is the direction of future radar development. The transceiver channel calibration is an important task in the radar debugging process. Transceiver channel calibration, as the name suggests, includes receiver channel calibration and transmit channel calibration. For broadband phased array radar, there is also a broadband mode. Therefore, there are four main calibration tasks in wideband phased array radar transceiver channel calibration, namely receiving narrowband, receiving wideband, transmitting narrowband, and transmitting wideband. ...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 李照照井伟纪玉雪王欢黄金杰
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP