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Phased array time-frequency synchronous distribution time delay consistency automatic calibration system

A time-frequency synchronization and consistency technology, applied in the field of phased array radar, can solve the problem of large delay calibration error

Pending Publication Date: 2022-04-22
NO 34 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a phased array time-frequency synchronous distribution time delay consistency automatic calibration system, aiming to solve the problem that the existing time delay calibration has a large error through manual adjustment

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  • Phased array time-frequency synchronous distribution time delay consistency automatic calibration system
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  • Phased array time-frequency synchronous distribution time delay consistency automatic calibration system

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Embodiment Construction

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] see Figure 1 to Figure 4 , the present invention provides a phased array time-frequency synchronous distribution delay consistency automatic calibration system, including an electro-optical unit 1, an optical power sub-unit 2, an operation and maintenance unit 3 and several array element photoelectric units 4;

[0041]The electro-optical unit 1 is connected to the optical power sub-unit 2, several array element photoelectric units 4 are respectively connected to the optical power sub-unit 2, and the operation and maintena...

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Abstract

The invention relates to the technical field of phased array radars, in particular to a phased array time-frequency synchronous distribution time delay consistency automatic calibration system which comprises an electro-optical unit, an optical power division unit, an operation and maintenance unit and a plurality of array element photoelectric units. The operation and maintenance unit issues instructions to the electro-optical unit, the optical power division unit and the plurality of array element photoelectric units; the photoelectric unit outputs a reference radio frequency signal and performs electro-optical conversion, and after the loopback optical signal output by the optical power division unit is converted into a loopback electric signal, the delay inequality of the reference radio frequency signal and the loopback electric signal is measured; the optical power division unit performs time delay adjustment on the output reference radio frequency optical signal, transmits an adjusted adjustment signal to the array element photoelectric unit, amplifies a reflected signal of the array element photoelectric unit, and transmits the amplified reflected signal as a loopback optical signal to the electro-optical unit; and the array element photoelectric unit reflects the adjustment signal as a reflection signal back to the optical power division unit, so that the problem of large error caused by manual adjustment in the existing time delay calibration is solved.

Description

technical field [0001] The invention relates to the technical field of phased array radar, in particular to a phased array time-frequency synchronous distribution delay consistency automatic calibration system. Background technique [0002] The phased array radar front time-frequency signal includes the local oscillator signal used to provide the front T / R components with a reference synchronous clock and frequency conversion up and down. The current conventional phased array time-frequency signal distribution system based on radio frequency optical In principle, the controlled array radar system requires that the time-frequency signal delay insertion of each branch to each T / R component be consistent. [0003] In order to ensure the consistency of the time delay of each channel, the current conventional method is to manually adjust the guarantee, that is, try to ensure that the device time delay of the branch channel is consistent during design, and cooperate with the vecto...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 陈国帅曾永福周弟伟
Owner NO 34 RES INST OF CHINA ELECTRONICS TECH GRP
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