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Sea clutter analysis method and system applied to conformal array radar

A sea clutter and conformal array technology, applied in the field of sea clutter analysis methods and systems, can solve problems such as limited reference value, no consideration of the influence of conformal array clutter spectrum, etc., and achieve the effect of high reference value

Pending Publication Date: 2021-05-25
YUNNAN NORMAL UNIV
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Problems solved by technology

[0005] However, the above scheme only gives the idea of ​​how to compensate the conformal array clutter spectrum, but does not consider the influence of the actual sea clutter on the conformal array clutter spectrum; The reference value given is also very limited

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  • Sea clutter analysis method and system applied to conformal array radar
  • Sea clutter analysis method and system applied to conformal array radar
  • Sea clutter analysis method and system applied to conformal array radar

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Embodiment Construction

[0083] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0084] In order to obtain more accurate sea clutter analysis results with higher reference value for subsequent detection of moving targets, an embodiment of the present invention provides a sea clutter analysis method applied to conformal array radar; wherein, the common Conformal array radar is a fuselage frustum conformal array radar; see figure 1 As shown, the method includes the following steps:

[0085] S1: Construct the sea clutter geometric model of the conformal array radar, and obtain the aircraft parameters of the conformal array radar.

[0086] figure 2 Shows the sea clutter geometric model of a fuselage frustum conformal array radar; in the sea clutter geometric model, a 1 Indicates the larger arc radius of the fuselage frustum conformal array radar, a 2 Indicates the smaller arc ...

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Abstract

The invention discloses a sea clutter analysis method and system applied to a conformal array radar. The method comprises the following steps: constructing a sea clutter geometric model and obtaining aerial carrier parameters; according to the sea clutter geometric model, calculating a sea clutter beam pointing unit vector and a first sea clutter airspace steering vector; calculating an array element gain vector according to the sea clutter beam pointing unit vector, and solving a Hadamard product of the array element gain vector and the first sea clutter airspace steering vector to obtain a second sea clutter airspace steering vector; calculating a sea clutter time domain steering vector according to the sea clutter beam pointing unit vector and the aerial carrier parameters, and solving a Kronecker product of the sea clutter time domain steering vector and the second sea clutter space domain steering vector to obtain a sea clutter space-time steering vector; obtaining a sea clutter sampling covariance matrix according to the sea clutter space-time steering vector; and obtaining a sea clutter analysis result according to the sea clutter sampling covariance matrix. According to the sea clutter analysis method, the sea clutter influence is considered, and the accurate sea clutter analysis result is obtained.

Description

technical field [0001] The invention relates to the technical field of radar space-time adaptive processing, in particular to a sea clutter analysis method and system applied to conformal array radar. Background technique [0002] The ocean is an important part of our country's land, and it is very important to use airborne downward-looking radar to monitor the sea. The radar antenna with conformal array structure is widely used in airborne down-looking radar because of its advantages of significantly reducing the load of the carrier aircraft, reducing air resistance, and producing a relatively large effective aperture. When the airborne downward-looking radar is working towards the sea, the strong sea clutter generated will often submerge the moving target, thus causing the moving target to be unable to be effectively detected. [0003] The literature "Zhihui Xin, Guisheng Liao, Zhiwei Yang, Yuhong Zhang, and HongxingDang, A Deterministic Sea Clutter Space Time Model Based...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/414Y02A90/10
Inventor 辛志慧陈禧龙孙雨王志旭宣嘉裕
Owner YUNNAN NORMAL UNIV
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