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Adaptive radar sea clutter prediction system

A forecasting system, sea clutter technology, applied in radio wave measurement systems, instruments, etc., can solve the problem of weak anti-noise interference ability of the system

Inactive Publication Date: 2018-12-11
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the traditional radar sea clutter forecasting method's influence of artificially selected parameters and the weak anti-noise interference ability of the system, the present invention provides a radar sea clutter forecast system with self-adaptive structure parameters, automatic model update, and strong anti-noise interference ability

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  • Adaptive radar sea clutter prediction system

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Embodiment Construction

[0074] The present invention will be described in detail below according to the accompanying drawings.

[0075] refer to figure 1 , figure 2 , an adaptive radar sea clutter forecasting system, including a radar 1, a database 2 and a host computer 3, the radar 1, the database 2 and the host computer 3 are connected in sequence, the radar 1 irradiates the detected sea area, and the radar The sea clutter data is stored in the database 2, and the upper computer 3 includes:

[0076] Data preprocessing module 4: Preprocessing the radar sea clutter data input from the database, the following process is used to complete:

[0077] (1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,2,...,N;

[0078] (2) Normalize the training samples to obtain the normalized amplitude

[0079]

[0080] Among them, min x represents the minimum value in the training sample, and max x represents the maximum value in the training sample;

[0081...

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Abstract

The invention discloses an adaptive radar sea clutter prediction system, which comprises a radar, a database and an upper computer, wherein the radar, the database and the upper computer are connectedin sequence; the radar illuminates a detected sea area and radar sea clutter data are stored to the database; the upper computer carries out modeling and prediction on the sea clutter data in the database; and the upper computer comprises a data preprocessing module, a fuzzy wavelet neural network modeling module, a sea clutter prediction module, a discriminant model updating module and a resultdisplay module. The invention also provides a radar sea clutter prediction method based on a fuzzy wavelet neural network. The radar sea clutter prediction system and the method have the advantages ofadaptive structure parameters, automatic model updating and strong anti-noise interference ability.

Description

technical field [0001] The invention relates to the field of radar data processing, in particular to an adaptive radar sea clutter forecasting system. Background technique [0002] Sea clutter, that is, backscattered echoes from a patch of sea illuminated by radar transmissions. Since sea clutter severely restricts the detectability of radar echoes from "point" targets on or near the sea surface, such as navigational buoys and ice blocks floating on the sea, the study of sea clutter has a great impact on the ocean background. The detection performance of ships and other targets has a very important impact, so it has important theoretical significance and practical value. [0003] Habitual Shanghai clutter is regarded as a single random process, such as lognormal distribution, K distribution, etc. However, these models have their specific limitations in practical applications. One of the important reasons is that the seemingly random waveform of sea clutter does not actuall...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/414G01S7/417
Inventor 刘兴高张淼
Owner ZHEJIANG UNIV
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