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Method and apparatus for detecting and tracking faint target of high frequency ground wave radar

A weak target detection and echo technology, applied in the field of radar, can solve the problem of inability to detect and submerge weak targets

Inactive Publication Date: 2015-05-06
HARBIN INST OF TECH +1
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Problems solved by technology

The existing high-frequency ground wave radar target detection and sea state remote sensing methods are all based on the Bragg resonance theory and the first-order and second-order scattering theory of the interaction between high-frequency waves and the ocean surface. Weak targets in the spectral background of strong sea clutter of the first and second orders

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  • Method and apparatus for detecting and tracking faint target of high frequency ground wave radar
  • Method and apparatus for detecting and tracking faint target of high frequency ground wave radar
  • Method and apparatus for detecting and tracking faint target of high frequency ground wave radar

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[0024] It is understood that the following description provides many different embodiments, or examples, for implementing various elements of the invention. Specific examples of components and arrangements are described below to simplify the present disclosure. Of course these are merely examples and are not intended to be limiting. Furthermore, the following description of a first component formed on a second component may include embodiments in which the first and second components are formed in direct contact, and may also include embodiments in which additional components are formed inserted into the first and second components An embodiment such that the first and second components are not in direct contact. Various features may be arbitrarily drawn in different sizes for simplicity and clarity.

[0025] The purpose of the present invention is to provide a weak target detection and tracking method based on the nonlinear dynamic characteristics of high-frequency radio wa...

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Abstract

The invention discloses a method for detecting and tracking a faint target of a high frequency ground wave radar with a non-linear dynamics characteristic of a wave echo. The method comprises the following steps: recording intermediate frequency data in an echo signal in real time; canceling impact interference and the first-order data of an echo; establishing a chaotic dynamics forecasting model of the wave echo; and executing detection and tracking of the faint target, wherein the steps of canceling are as follows: implementing distance conversion and speed conversion to the intermediate frequency data; eliminating impact interference on a speed spectral domain through a spline wavelet filter, and eliminating a strong sea clutter through a track matrix wave of a reconstructing attractor. In addition, the invention discloses an apparatus for detecting and tracking a faint target of a high frequency ground wave radar with a non-linear dynamics characteristic of a wave echo.

Description

technical field [0001] The present invention generally relates to the field of radar, and more specifically, to a method and device for detecting and tracking weak targets of high-frequency ground wave radar. Background technique [0002] The sea is boundless, vast and boundless, hiding infinite secrets. The research on the nonlinear dynamic characteristics of high-frequency radio wave echoes attracts many scientists. In particular, the advent of high-frequency radar has promoted the development of a new field of high-frequency radio oceanography. What are the characteristics of high-frequency radio ocean echoes? How to extract the nonlinear dynamic characteristics of high-frequency radio wave echoes? How to apply the above features to construct a weak target detection and tracking method based on the nonlinear dynamic characteristics of high-frequency radio wave echoes? This is a challenging invention subject that has not yet been carried out at home and abroad at prese...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/292
Inventor 权太范许荣庆张新潮于长军周共建杨强
Owner HARBIN INST OF TECH
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