High-sensitivity multifunctional incoherent scattering radar system based on digital antenna array

An incoherent scattering and high-sensitivity technology, applied in the field of high-sensitivity multi-functional incoherent scattering radar system, can solve the problems of slow scanning speed, poor system reliability, difficulty in satisfying ionospheric parameters for long-term continuous detection, and achieve high sensitivity, low noise effect

Pending Publication Date: 2019-06-21
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI +1
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Problems solved by technology

The antenna array of the traditional incoherent scatter radar generally adopts centralized emission and mechanical scanning, the scanning speed is slow, and the reliability of the system is poor, which is difficult to meet the needs of long-term continuous detection of ionospheric parameters

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  • High-sensitivity multifunctional incoherent scattering radar system based on digital antenna array
  • High-sensitivity multifunctional incoherent scattering radar system based on digital antenna array
  • High-sensitivity multifunctional incoherent scattering radar system based on digital antenna array

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Incoherent scatter radar obtains multi-parameter information of the ionosphere from the weak ionosphere scattering signals by emitting high-power electromagnetic waves. Incoherent scatter radar can directly detect the electron density, temperature, composition, drift velocity (electric field) in the plasma at almost the entire ionosphere height with high precision, and can als...

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Abstract

The invention provides a high-sensitivity multifunctional incoherent scattering radar system based on a digital antenna array, which comprises an antenna array and a back-end processing controller, wherein the back-end processing controller is used to generate a transmission instruction according to a preset transmission parameter; the antenna array is used to generate a transmission signal according to the transmission instruction, transmit the transmission signal, receive a space electromagnetic wave signal and perform first signal processing on the space electromagnetic wave signal; and theback-end processing controller is further used to perform second signal processing on the space electromagnetic wave signal through signal processing according to a preset working mode, and the working mode includes a space target tracking mode or an ionosphere detection mode. The system provided in the invention is low in noise and high in sensitivity during a radar detection process.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a high-sensitivity multifunctional non-coherent scattering radar system based on a digital antenna array. Background technique [0002] Radar is an electronic device that uses electromagnetic waves to detect targets. Incoherent scatter radar obtains ionospheric parameters by emitting high-power electromagnetic waves and receiving Thomson scattering signals of free electrons in the ionosphere. The antenna array of the traditional incoherent scatter radar generally adopts concentrated emission and mechanical scanning, the scanning speed is slow, and the reliability of the system is poor, which is difficult to meet the needs of long-term continuous detection of ionospheric parameters. At present, the development trend of phased array incoherent scattering radar in the world is to adopt the electronically scanned phased array system with distributed emission. The radar beam switching ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/02G01S7/04G01S7/40
Inventor 曾令旗万卫星宁百齐金林乐新安柯长海赵必强丁锋张赟霞
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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