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Spatial emission phase participation synthesis system based on optical fiber stationary phase transmission

A technology of stable phase transmission and optical emission module, applied in the field of electronic warfare and radar, which can solve the problems of inability to realize true delay difference compensation and low compensation accuracy, achieve good spatial synthesis and detection capabilities, and ensure the effect of coherent performance

Inactive Publication Date: 2021-01-05
扬州船用电子仪器研究所
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Problems solved by technology

[0005] The purpose of the present invention is to propose a space launch coherent combination system based on optical fiber stable phase transmission, to sol

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  • Spatial emission phase participation synthesis system based on optical fiber stationary phase transmission
  • Spatial emission phase participation synthesis system based on optical fiber stationary phase transmission
  • Spatial emission phase participation synthesis system based on optical fiber stationary phase transmission

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Embodiment

[0035] A space emission coherent synthesis system based on optical fiber phase-stable transmission, including an optical transmission module 1, two phase-stable transmission true delay compensation modules 2-1, 2-2, optical fiber 3, and two optical receiving modules 4-1 , 4-2, delay measurement control module 5 and 2 transmitting antennas 6-1, 6-2; the optical transmitting module 1 modulates the broadband microwave signal, and divides the signal into 2 paths, and the stable phase transmission is really delayed The time compensation modules 2-1 and 2-2 perform delay compensation on the signal of one channel according to the delay compensation data provided by the delay measurement control module 5, and the optical receiving modules 4-1 and 4-2 respectively perform delay compensation on the two channels of broadband microwave The signal is demodulated, and the delay measurement control module 5 realizes the delay measurement of the broadband microwave signal demodulated by each o...

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Abstract

The invention provides a spatial emission phase participation synthesis system based on optical fiber stationary phase transmission. The spatial emission phase participation synthesis system comprisesa light emission module, a plurality of stationary phase transmission true delay compensation modules, an optical fiber, a plurality of light receiving modules, a delay measurement control module anda plurality of emission antennas. The light emission module is used for realizing modulation of broadband microwave signals and shunting the signals. According to the system disclosed in the invention, an optical fiber stationary phase transmission method based on multi-frequency-point true time delay high-precision measurement and optical true time delay compensation is adopted, so that the phases of the sub-stations can be consistent, the true time delay can also be consistent, and the coherent performance of the sub-stations is ensured.

Description

technical field [0001] The invention belongs to radar and electronic warfare technology, in particular to a space launch coherent synthesis system based on optical fiber stable phase transmission. Background technique [0002] In research fields such as distributed radar systems and distributed cooperative electronic countermeasures, signals from different substations must be superimposed, requiring coherence between signals. Therefore, the microwave signal at the local end must be transmitted to each sub-site with the minimum phase fluctuation, and the phase consistency between the sub-sites is required to be good. Compared with coaxial cables, optical fiber links have the advantages of low loss, good phase stability, large transmission bandwidth, and anti-electromagnetic interference. Therefore, optical fiber transmission technology based on microwave photons provides good conditions for the application of distributed systems. [0003] However, the optical fiber itself is...

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Application Information

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IPC IPC(8): H04B10/25H04J3/06
CPCH04J3/0682
Inventor 范晶晶林桂道张昀余博昌
Owner 扬州船用电子仪器研究所