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Self-adaptive target detection method and device

A target detection and self-adaptive technology, applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc. Achieve the effect of accurate marine target detection and accurate description

Inactive Publication Date: 2017-06-13
BEIJING HIGHLANDER DIGITAL TECH +1
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Problems solved by technology

[0003] In the process of realizing the present invention, the inventors found that the existing sea target detection method has at least the following problems: the sea clutter is greatly affected by the environment, and due to the influence of factors such as wind force, wind direction, gravity, ocean currents, and climate, the sea surface conditions are relatively large. It is complex and varied, and the characteristics of sea clutter cannot be accurately described by a model

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[0039] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more o...

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Abstract

The invention relates to the technical field of radar signal processing and provides a self-adaptive target detection method and device. The method includes performing area division on each frame of radar echo wave data of the same geographic location and obtaining amplitude data in radar echo wave data corresponding to different data frames of different areas; acquiring the mean value of the amplitude values in the radar echo wave data corresponding to a plurality of continuous data frames of each area and obtaining current threshold values of the radar echo wave data of different areas; fitting the current threshold values of the radar echo wave data of the different areas and taking the fitting result as background noise of the current radar echo wave data, and detecting a target signal from the current radar echo wave data. According to the invention, the current threshold values of the radar echo wave data are obtained through actual echo wave statistics and the threshold values are adjusted in a self-adaptive manner along with actual sea conditions. Therefore, accurate description of sea clutter features is realized and marine target detection is further realized accurately.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to an adaptive target detection method and device. Background technique [0002] With the development of radar technology, marine navigation radar, as the key equipment of modern seagoing ships, has developed rapidly. Target detection in the background of sea clutter is a key technology that directly affects the performance of marine navigation radar. After World War II, many scholars at home and abroad studied the characteristics of sea clutter, modeling and simulating it. The commonly used distribution models include Rayleigh distribution, Weibull distribution, lognormal distribution, K distribution model. [0003] In the process of realizing the present invention, the inventors found that the existing sea target detection method has at least the following problems: the sea clutter is greatly affected by the environment, and due to the influence of factors such a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S7/36G01S7/41
CPCG01S13/88G01S7/36G01S7/414
Inventor 刘正君李常伟杨玉玉张磊
Owner BEIJING HIGHLANDER DIGITAL TECH
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