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Flight target altitude estimation method based on dual-frequency RCS information fusion

A technology of flying height and flying target, which is applied in the field of radar, can solve the problem of poor accuracy of the multi-solution estimation results of the height estimation model, and achieve the effect of realizing accurate estimation and improving observability

Inactive Publication Date: 2016-02-03
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a method for estimating the height of a flying target based on dual-frequency RCS information fusion, so as to solve the problem of multiple solutions and poor accuracy of the estimation results in the height estimation model in the prior art. technical problem

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  • Flight target altitude estimation method based on dual-frequency RCS information fusion
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  • Flight target altitude estimation method based on dual-frequency RCS information fusion

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[0052] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature and not intended to limit the invention.

[0053] Embodiment 1 of the present invention provides a method for estimating the height of a flying target, and the steps are as follows: figure 2 shown, including the following steps:

[0054] Step S1. In the dual-frequency operating mode of the high-frequency ground wave radar, combine and convert the RCS information of the low-altitude flying target under the two operating frequencies, and fuse the echo information of the dual-frequency signals;

[0055] Step S2, using the two signal echo strengths in the dual-frequency mode to construct a fully observab...

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Abstract

The invention discloses a flight target altitude estimation method based on dual-frequency RCS information fusion. The method comprises steps: through fusing high-frequency ground wave radar dual-frequency signal echo intensity information, an estimation model in which the high-frequency ground wave radar target flight altitude and the RCS information can be totally observed and fused in a single base system is built. In a high-frequency ground wave radar dual-frequency working mode, low-altitude flight target RCS information at two working frequencies are combined and transferred, fusion of dual-frequency signal echo information is realized, observability of the altitude estimation model is improved, and the flight target altitude and the RCS are precisely estimated.

Description

technical field [0001] The invention relates to the field of radar technology, in particular to a method for estimating the height of a flying target based on dual-frequency RCS information fusion. Background technique [0002] Due to its unique point wave propagation and attenuation characteristics, high-frequency ground wave radar can detect ships and aircraft targets beyond the horizon beyond the horizon. [0003] Due to the long wavelength and large antenna position of high-frequency ground wave radar, it is difficult to build a vertical array in the pitch direction, and cannot obtain target angle information in the pitch direction, so it cannot distinguish between two flying targets at the same distance but at different heights. In engineering applications, the height estimation of high-frequency ground wave radar flying targets has not been realized yet. [0004] In the existing target flight height estimation technology, the signal echo strength is a function of the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/94G01S13/935
CPCG01S13/935
Inventor 赵孔瑞张超
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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