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Phased array radar electronic control wave beam stabilizing method

A technology of phased array radar and stabilization method, which is applied in the field of phased array radar, and can solve problems such as the influence of antenna beam pointing changes on target detection and tracking

Inactive Publication Date: 2013-03-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0017] The invention provides a phased array radar electronic control beam stabilization method, which solves the problem that the change of the antenna beam direction caused by the carrier disturbance affects the target detection and tracking

Method used

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  • Phased array radar electronic control wave beam stabilizing method

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0032] The principle analysis of the present invention: using the invariance of the beam space pointing, the compensation angle required to offset the disturbance at the current moment is obtained by inversion, and under the control of a fixed sequence, it is fused with the target measurement value obtained by signal processing to perform beam control to realize the target. Accurate detection and tracking. The signal processing cycle is T s , the data update period of the beam stabilization module is T d . To facilitate beam steering, T s with T d When designed to meet T s / T d =N (N is an integer).

[0033] The three-axis gyroscope is installed on the back of the phased array antenna, and measures the angular velocity information relative to the...

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Abstract

The invention provides a phased array radar electronic control wave beam stabilizing method. The problem of the influence of antenna beam pointing changes caused by carrier disturbance on target detection and tracking is solved. The phased array radar electronic control wave beam stabilizing method comprises: step one, performing initialization, powering on a phased array radar and initializing parameters of a beam stabilizing module; step two, utilizing a previous moment quaternion and an angular velocity measurement value within an existing time interval to calculate antenna relative gestures through a numerical integration method; step three, obtaining a beam offset angle for keeping beam stability according to the antenna relative gestures obtained the previous step and a previous moment target tracking vector and through coordinates transformation backstepping; step four, obtaining a target measurement value; and step five, utilizing the beam offset angle obtained through calculation, a target azimuth error angle and a pitching error angle to jointly achieve beam control, updating the target tracking vector and the quaternion for arithmetic iteration, accordingly offsetting the influence of carrier disturbance within the existing time interval and keeping a beam to always right face a target.

Description

technical field [0001] The invention belongs to the field of phased array radars, and relates to a method for stabilizing electronically controlled beams of phased array radars. Background technique [0002] Phased array radar has the advantages of fast scanning speed, strong anti-interference ability, suitable for multi-target detection, etc. It is an important development direction of the new generation radar. Due to the electronic scanning method, the phased array radar can realize the inertialess scanning of the antenna beam. Therefore, a complex mechanical servo platform is no longer needed in the guidance system using phased array radar, which greatly reduces the size of the radar and improves its reliability. However, after the mechanical servo platform is removed, the phased array is directly connected to the moving carrier, and the disturbance of the carrier will directly act on the array antenna, causing the antenna beam to change in spatial direction, which will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/66
Inventor 李阳肖增利陆顶洪
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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