Sea target detecting system of adaptive radar and method thereof
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A target detection and self-adaptation technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as poor self-adaptive forecasting efficiency
Inactive Publication Date: 2011-09-14
ZHEJIANG UNIV
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[0005] In order to overcome the deficiencies of poor adaptive prediction efficiency of existing radar sea target detection methods, the present invention provides an adaptive radar sea target detection system and method with parameter self-adaptation, good optimization effect and high prediction efficiency
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Embodiment 1
[0107] refer to figure 1 , figure 2 , an adaptive radar sea target detection system, comprising 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 sea clutter The wave data is stored in the database 2, and the upper computer 3 includes:
[0108] The data preprocessing module 4 is used for radar sea clutter data preprocessing, which is completed by the following process:
[0109] 1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,...,N;
[0110] 2) Normalize the training samples to obtain the normalized amplitude
[0111] x ‾ i = x i - min x max x - min ...
Embodiment 2
[0157] refer to figure 1 , figure 2 , a kind of adaptive radar sea target detection method, described method comprises the following steps:
[0158] (1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,...,N;
[0159] (2) Normalize the training samples to obtain the normalized amplitude
[0160] x ‾ i = x i - min x max x - min x
[0161] Among them, minx represents the minimum value in the training sample, and maxx represents the maximum value in the training sample;
[0162] (3) Reconstruct the normalized training samples to obtain the input matrix X and the corresponding output matrix Y respectively:
[0163] X = ...
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Abstract
The invention discloses a sea target detecting system of an adaptive radar, which comprises a radar, a database, and an upper computer connected in order; the radar is used for irradiating the detected sea area and storing radar sea clutter data in the database; the upper computer comprises a data pre-processing module, a Robust prediction model modeling module, an adaptive swarm intelligent optimizing module, a target detecting module, a model updating module and a result displaying module. The invention further provides a sea target detecting method of the adaptive radar. The invention provides a sea target detecting system of the adaptive radar and a method thereof with adaptive parameter, good optimization effect and high prediction efficiency.
Description
technical field [0001] The invention relates to the field of radar data processing, in particular to an adaptive radar sea target detection system and method. Background technique [0002] Sea clutter, that is, radar backscatter echoes from the sea surface. In recent decades, with the in-depth understanding of sea clutter, Germany, Norway and other countries have successively tried to use radar to observe sea clutter to obtain radar wave images to invert wave information, so as to obtain real-time information about the state of the ocean, such as the Wave height, direction and period, etc., so as to further detect small targets at sea, which is of great significance to maritime activities. [0003] Maritime target detection technology plays an important role, and providing accurate target judgment is one of the important tasks of marine radar. The radar automatic detection system makes a judgment under a given detection threshold according to the judgment criterion, and th...
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