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Method for suppressing large-amplitude ionosphere phase diameter disturbance of high-frequency radar

A phase disturbance and ionosphere technology, applied to radio wave measurement systems, instruments, etc., can solve problems such as difficulty in ship target detection

Inactive Publication Date: 2019-10-18
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

[0011] In order to solve the problem of difficult ship target detection under the background of broadened echo spectrum of high-frequency radar ionospheric pollution, the present invention proposes a large-amplitude ionospheric phase path disturbance suppression method including the following processes:

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  • Method for suppressing large-amplitude ionosphere phase diameter disturbance of high-frequency radar
  • Method for suppressing large-amplitude ionosphere phase diameter disturbance of high-frequency radar

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Embodiment Construction

[0047] The invention provides a high-frequency radar large-magnitude ionospheric phase path disturbance suppression method based on generalized parameterized time-frequency analysis. Firstly, this method takes the high-frequency space-ground wave radar as the background, and establishes the pollution model of broadened sea clutter; secondly, based on the GPTF algorithm, a large-scale ionospheric phase path disturbance suppression method is proposed; finally, the proposed method is verified by simulation. effectiveness. Theoretical analysis and simulation experiments show that this method can effectively suppress large-scale ionospheric phase diameter disturbances, and has the advantages of high resolution and no cross terms.

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0049] (1) Modeling of broadened sea clutter

[0050] The present invention takes the high-frequency space-ground wave radar...

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Abstract

The invention provides a method for suppressing large-amplitude ionosphere phase diameter disturbance of a high-frequency radar, and the method comprises the following steps of establishing a pollution model of broadened sea clutter by taking the high-frequency sky-ground wave radar as a background, and providing a method for suppressing large-amplitude ionosphere phase diameter disturbance basedon a generalized parametric time-frequency analysis (GPTF) algorithm, and further verifying the effectiveness of the proposed method through simulation. Theoretical analysis and simulation experimentsshow that the processing method can effectively suppress the large-amplitude ionospheric phase diameter disturbance, and the method for suppressing large-amplitude ionosphere phase diameter disturbance of the high-frequency radar has the advantages of high resolution and no cross terms.

Description

technical field [0001] The present invention relates to a high-frequency radar large-amplitude ionospheric phase path disturbance suppression method, which is especially suitable for target detection under the background of broadened sea clutter affected by ionospheric phase path disturbances for high-frequency sky-wave over-the-horizon radar . Background technique [0002] High-frequency sky-wave over-the-horizon radar has the advantages of long sky-wave propagation distance, large coverage area, anti-anti-radiation missile, etc., and has been widely valued by domestic and foreign research institutions. However, the sky-wave over-the-horizon radar will be affected by the ionospheric phase path disturbance, which will lead to the broadening of the ocean echo spectrum, especially the large-scale ionospheric phase path disturbance will lead to serious broadening and complex shape of the sea clutter spectrum, which seriously affects the detection of ship targets. The ionospher...

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Application Information

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IPC IPC(8): G01S7/41G01S7/03
CPCG01S7/414G01S7/418G01S7/023G01S7/03
Inventor 李亚军王卓群郭冬梅王树文王鹏飞武俊强
Owner SHANGHAI RADIO EQUIP RES INST
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