Adaptive intelligent integration detection method of radar range extension target

A technology of distance expansion target and detection method, which is applied in the field of adaptive intelligent fusion detection of distance expansion target, and can solve the problems of performance degradation and high false positive rate.

Active Publication Date: 2014-01-29
NAVAL AERONAUTICAL UNIV
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Problems solved by technology

[0007] In the case of unknown radar clutter background, in order to overcome the sharp drop in performance when the target detection method based on statistical testing does not match the actual environment, the traditional support vector machine method has a high misjudgment rate and cann

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  • Adaptive intelligent integration detection method of radar range extension target

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings. The embodiments of the present invention are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.

[0046] With reference to the accompanying drawings of the description, the specific implementation of the present invention is divided into the following steps:

[0047] Step 1 Extract training samples from the clutter database

[0048]By performing radar irradiation on the target-free range around the area to be detected, the clutter auxiliary data adjacent to the unit to be detected that does not contain the target is obtained, and the initial clutter database is established; the area around the area to be detected is extracted from the clutt...

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Abstract

The invention discloses an adaptive intelligent integration detection method of a radar range extension target and belongs to the radar signal processing field. The adaptive intelligent integration detection method of the radar range extension target aims at overcoming the defects that the existing range extension target statistical detection method is poor in adaptive capability to the clutter and target environment and the like under the condition of the unknown clutter background. According to the adaptive intelligent integration detection method of the radar range extension target, normalized processing is performed on a radar echo one-dimensional range profile, integration optimization is performed through data domain description characteristics of a clutter one-dimensional range profile, a detection method of the constant false alarm rate of a one-class support vector machine is established, a kernel function parameter is adjusted to ensure constant false alarm rate characteristics of the detection method, and a clutter database is updated according to a detection result; statistical modeling does not need to be performed on the clutter background; the detection method is suitable for the positive and negative sample quantity seriously asymmetrical radar target detection environment; the false alarm control capability is strong, the computation is less, the engineering implementation is convenient, and the popularization and application value is high.

Description

1. Technical field [0001] The invention belongs to the field of radar signal processing, and in particular relates to an adaptive intelligent fusion detection method for a range-extending target. 2. Background technology [0002] Compared with conventional low-resolution radars, high-range resolution radars have obvious advantages in anti-jamming, anti-reconnaissance, precise detection and imaging, high-precision tracking, target recognition, etc., and have received extensive attention in modern military and civilian fields. And applications have become an important direction of modern radar development. Different from the "point target" of conventional narrow-band radar, the echoes of high-range-resolution radar targets are distributed in different radial range units, presenting a "one-dimensional range image", forming a "range-extended target". The range-extending target signal has strong non-stationary and nonlinear characteristics. Most of the existing range-extending t...

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Application Information

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IPC IPC(8): G06F17/30G01S7/36
CPCG01S7/02G01S7/36G06F16/90
Inventor 简涛何友苏峰平殿发张韫黄晓冬沈剑
Owner NAVAL AERONAUTICAL UNIV
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