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Radar sea clutter prediction system with parameter optimization and method

A technology for forecasting systems and sea clutter, applied to radio wave measurement systems, instruments, etc., can solve problems such as weak anti-noise interference

Inactive Publication Date: 2018-12-11
ZHEJIANG UNIV
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Problems solved by technology

[0004] In order to overcome the influence of model parameter selection on the forecasting effect of the traditional radar sea clutter forecasting method and the shortcomings of weak anti-noise interference ability, the present invention provides a radar sea clutter forecast with optimal parameters, automatic model update, and strong anti-noise interference ability System and method

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  • Radar sea clutter prediction system with parameter optimization and method
  • Radar sea clutter prediction system with parameter optimization and method
  • Radar sea clutter prediction system with parameter optimization and method

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Embodiment Construction

[0058] The present invention will be described in detail below according to the accompanying drawings.

[0059] refer to figure 1 , figure 2 , a radar sea clutter forecasting system with optimal parameters, including a radar 1, a database 2 and a host computer 3, the radar 1, database 2 and the host computer 3 are connected in sequence, the radar 1 irradiates the detected sea area, and The radar sea clutter data is stored in the database 2, and the upper computer 3 includes:

[0060] Data preprocessing module 4: Preprocessing the radar sea clutter data input from the database, the following process is used to complete:

[0061] (1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,2,...,N;

[0062] (2) Normalize the training samples to obtain the normalized amplitude

[0063]

[0064] Among them, min x represents the minimum value in the training sample, and max x represents the maximum value in the training sample;

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Abstract

The invention discloses a radar sea clutter prediction system with parameter optimization, which comprises a radar, a database and an upper computer, wherein the radar, the database and the upper computer are sequentially connected; the radar illuminates a detected sea area and the radar sea clutter data are stored to the database; the upper computer carries out modeling and prediction on the seaclutter data in the database; and the upper computer comprises a data preprocessing module, a wavelet neural network modeling module, a differential evolution algorithm optimization module, a sea clutter prediction module, a discriminant model updating module and a result display module. The invention also provides a radar sea clutter prediction method for optimizing the wavelet neural network based on the differential evolution algorithm. The radar sea clutter prediction system and the method have the advantages of parameter optimization, 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 a radar sea clutter prediction system and method with optimal parameters. Background technique [0002] Sea clutter, that is, backscattered echoes from a patch of sea illuminated by radar transmissions. Because 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 waveforms of s...

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Application Information

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