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Intelligent radar sea clutter forecasting system and method based on differential evolution invasive weed optimization algorithm
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An optimization algorithm and differential evolution technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as insufficient intelligence and human factors
Inactive Publication Date: 2018-05-01
ZHEJIANG UNIV
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[0004] In order to overcome the shortcomings of traditional radar data processing, which are easily affected by human factors and lack of intelligence, the present invention provides an intelligent radar sea clutter forecasting system based on differential evolution invasive weed optimization algorithm that avoids human factors and has high intelligence. method
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Embodiment 1
[0106] refer to figure 1 , figure 2 , an intelligent radar sea clutter forecasting system based on the differential evolution invasive weed optimization algorithm, including a database 2 connected to the radar 1, and a host computer 3, the radar 1, the database 2 and the host computer 3 are connected in sequence, and the radar 1 pairs The detected sea area is irradiated, and the radar sea clutter data is stored in the database 2, and the upper computer 3 includes:
[0107] The data preprocessing module 4 is used for radar sea clutter data preprocessing, which is completed by the following process:
[0108]1) Collect N radar sea clutter echo signal amplitude x from the database i As training samples, i=1,...,N;
[0109] 2) Normalize the training samples to obtain the normalized amplitude
[0110]
[0111] Among them, minx represents the minimum value in the training sample, and maxx represents the maximum value in the training sample;
[0112] 3) Reconstruct the norm...
Embodiment 2
[0156] refer to figure 1 , figure 2 , an intelligent radar sea clutter prediction method based on differential evolution invasive weed optimization algorithm, the method includes the following steps:
[0157] (1) The radar irradiates the detected sea area, and stores the radar sea clutter data into the database;
[0158] (2) Collect N radar sea clutter echo signal amplitude x from the database i As training samples, i=1,...,N;
[0159] (3) Normalize the training samples to obtain the normalized amplitude
[0160]
[0161] Among them, minx represents the minimum value in the training sample, and maxx represents the maximum value in the training sample;
[0162] (4) Reconstruct the normalized training samples to obtain the input matrix X and the corresponding output matrix Y respectively:
[0163]
[0164]
[0165] Among them, D represents the reconstruction dimension, D is a natural number, and D
[0166] The robust foreca...
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Abstract
The invention discloses an intelligent radar sea clutter forecasting system and method based on a differential evolution invasive weed optimization algorithm. A radar, a database and a host computer are sequentially connected to form the system, the radar irradiates a detected sea area and stores radar sea clutter data to the database, and the host computer comprises a data preprocessing module, arobust prediction model modeling module, an intelligent optimizing module, a sea clutter forecasting module, a discrimination model updating module and a result display module. Aiming at the chaoticcharacteristic of radar sea clutter, radar sea clutter data is reconstructed, the reconstructed data is subjected to nonlinear fitting, a differential evolution invasive weedalgorithm is introduced,and therefore a radar sea clutter intelligent forecasting model is established, and the radar sea clutter can be forecasted on line. The modeling method only needs few samples, influence of human factors is reduced, and the intelligent radar sea clutter forecasting system and method are high in intelligence and robustness.
Description
technical field [0001] The invention relates to the field of radar data processing, in particular to an intelligent radar sea clutter forecasting system and method based on a differential evolution invasive weed optimization algorithm. 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 ...
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