Method for estimating physical dimension of conical target of broadband composite bistatic radar

A bistatic radar, physical size technology, applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc.

Active Publication Date: 2016-04-06
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

Obtaining target structural features, especially physical size, through 1D range images, 2D ISAR and 3D ISAR usually requires the knowledge of the micro-motion characteristics of the target, such as precession angular velocity, precession angle, etc., but the estimation of these parameters usually requires Knowing the structural features of the target, this constitutes a circular puzzle

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  • Method for estimating physical dimension of conical target of broadband composite bistatic radar
  • Method for estimating physical dimension of conical target of broadband composite bistatic radar
  • Method for estimating physical dimension of conical target of broadband composite bistatic radar

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Embodiment Construction

[0054] figure 1 Is the overall flow chart of the present invention. In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0055] Step 1: Establish bistatic observation model of cone target

[0056] Such as figure 2 As shown, the monostatic radar T / R station is located at T x , the bistatic receiving station R is located at R x , the height and base radius of the rotationally symmetrical cone target are h and l respectively, and its backscattering characteristics are mainly contributed by three scattering centers (A, B, C), where B and C are the line of sight of the T / R station and the target axis The intersection point of the plane and the edge of the cone base, and the bistatic scattering characteristics of the cone target are mainly contributed by three scattering centers (A, D, E), D, E are the plane and the conica...

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Abstract

The invention discloses a method for estimating the physical dimension of a conical target of a broadband composite bistatic radar, and the method comprises seven steps: 1, building a composite bistatic radar observation model; 2, obtaining a monostatic/bistatic radar one-dimensional ranging image; 3, extracting the position of the scattering center of a monostatic/bistatic radar; 4, solving an intermediate variable through employing a target symmetrical structure; 5, estimating a bistatic angle through employing tracking data; 6, carrying out the combined solving of the height of a cone and the bottom radius; 7, carrying out continuous observation and solving a mean value. The method can directly obtain the physical dimension of an object, is not affected by the attitude of the object, is stable in characteristics, is simple and practical, and facilitates the quick extraction of the features of a slightly moving target.

Description

Technical field: [0001] The invention relates to a method for estimating the physical size of a wideband compound bistatic radar cone target. The physical size (height and bottom surface radius) of the cone target is obtained based on electromagnetic scattering theory and a parameter estimation method. The invention belongs to the technical field of radar target characteristics. Background technique: [0002] Composite bistatic radar refers to adding a receiving station to the existing monostatic radar to form a radar system with simultaneous observation of two viewing angles, that is, T / R-R bistatic radar. The cost of a passive receiver is much lower than that of a complete radar, and the benefits obtained are great. The passive receiver itself has potential advantages such as anti-stealth and anti-jamming, and through the information fusion of two viewing angles, it can obtain More abundant and stable target information, thereby improving the target recognition ability of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S13/90
CPCG01S7/41G01S13/90G01S13/9064G01S13/9058
Inventor 艾小锋冯德军赵锋刘进杨建华李永祯肖顺平
Owner NAT UNIV OF DEFENSE TECH
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