System and method for detecting sea target by using robust intelligent radar
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A target detection and radar technology, applied in radio wave measurement systems, special data processing applications, instruments, etc., can solve the problems of insufficient intelligence, easy to be affected by human factors, and low robustness
Inactive Publication Date: 2011-09-14
ZHEJIANG UNIV
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[0005] In order to overcome the disadvantages of existing radar sea target detection methods, such as low robustness, being easily influenced by human factors, and insufficient intelligence, the present invention provides an intelligent radar sea target that is robust, avoids the influence of human factors, and has high intelligence. Detection system and method
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Embodiment 1
[0095] refer to figure 1 , figure 2 , a robust intelligent radar sea target detection system, 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 The clutter data is stored in the database 2, and the upper computer 3 includes:
[0096] The data preprocessing module 4 is used for radar sea clutter data preprocessing, which is completed by the following process:
[0097] 1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,...,N;
[0098] 2) Normalize the training samples to obtain the normalized amplitude
[0099] x ‾ i = x i - min x max x - min ...
Embodiment 2
[0138] refer to figure 1 , figure 2 , a kind of robust intelligent radar sea target detection method, described method comprises the following steps:
[0139] (1) Collect N radar sea clutter echo signal amplitude x from the database i As a training sample, i=1,...,N;
[0140] (2) Normalize the training samples to obtain the normalized amplitude
[0141] x ‾ i = x i - min x max x - min x
[0142] Among them, minx represents the minimum value in the training sample, and maxx represents the maximum value in the training sample;
[0143] (3) Reconstruct the normalized training samples to obtain the input matrix X and the corresponding output matrix Y respectively:
[0144] X = ...
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Abstract
The invention relates to a system for detecting a sea target by using a robust intelligent radar. The system comprises a radar, a database and an upper computer, which are orderly connected, wherein the radar is used for irradiating a sea area to be detected and storing radar sea clutter data in the database; and the upper computer comprises a data preprocessing module, a robust forecast model modeling module, an improved intelligent optimizing module, a target detecting module, a model updating module, and a result display module. The invention also provides a method for detecting the sea target by using the robust intelligent radar. The invention provides the system and method for detecting the sea target by using the robust intelligent radar which has advantages of robustness, capability of avoiding artificial factors, and high intelligence.
Description
technical field [0001] The invention relates to the field of radar data processing, in particular to a robust intelligent 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 criterio...
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