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Multi-beam spherical surface phased array antenna tracking target vertex passing method

A phased array antenna and target tracking technology, applied in radio wave reflection/re-radiation, radio wave measurement system, using re-radiation, etc., can solve problems such as overhead, achieve simple implementation methods, solve azimuth and pitch Angular dynamics are too large to ensure the effect of tracking accuracy

Active Publication Date: 2018-05-18
10TH RES INST OF CETC
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Problems solved by technology

To solve the overhead problem of digital multi-beam spherical phased array antenna tracking target

Method used

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  • Multi-beam spherical surface phased array antenna tracking target vertex passing method
  • Multi-beam spherical surface phased array antenna tracking target vertex passing method
  • Multi-beam spherical surface phased array antenna tracking target vertex passing method

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Embodiment Construction

[0020] The present invention is divided into two situations and implemented according to the known target trajectory and the unknown target trajectory.

[0021]refer to figure 1 . According to the present invention, the information of the vertex passing through the target orbit forecast, or according to the dynamic information of the captured target, in the case of known target trajectory, the coordinates of the target passing the vertex are calculated before the antenna tracking, according to the calculated known target trajectory Through the coordinates of the vertex, within the projected area of ​​the excitation area, rotate the original coordinate system as follows to establish a new coordinate system; in the rotated original coordinate system, take the z-axis of the original coordinate system of the multi-beam spherical phased array antenna as the center, Rotate the coordinate system according to the beam pointing azimuth direction p1, so that the azimuth angle of the tr...

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Abstract

The invention relates to a multi-beam spherical surface phased array antenna tracking target vertex passing method, and the tracking vertex passing method is simple, reliable and small in hardware resource consumption; the method comprises the following steps: rotating an original coordinate system in a following mode according to the vertex passing information forecasted by a target track or thedynamic information of the captured target, and building a new coordinate system; using the z shaft of the original coordinate system of the multi-beam spherical surface phased array antenna as the center in the rotation of the original coordinate system, rotating the coordinate system according to the beam pointing orientation direction P1, using the azimuth of the tracking target vertex passingas zero degree, and using the y shaft as the center to rotate and track the target pitch angle to the x shaft, wherein the x shaft points to the passing vertex. The method can obviously reduce the dynamic variations of the azimuth and pitch angle when the target passing the vertex, thus stably tracking the target.

Description

technical field [0001] The invention relates to a measurement and control system in the field of multi-target aerospace measurement and control in the whole airspace, and a method for solving the problem of tracking targets over the top. Background technique [0002] In the prior art, the ability of phased array antennas to form multiple beams in any direction in a very short time enables the radar to track multiple targets at the same time. The usual practice of phased array antennas is to install multiple arrays on one reflective surface. But there is a single moment that cannot be measured separately, and the moments affect each other. There are usually three ways to implement multi-beam phased antennas: the first is to realize multi-beam forming in the microwave frequency band, the second is to realize multi-beam forming in intermediate frequency, and the third is to realize multi-beam forming digitally. Microwave multi-beam forming refers to the pre-arrangement of sign...

Claims

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Application Information

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IPC IPC(8): G01S13/66
CPCG01S13/66
Inventor 王文政
Owner 10TH RES INST OF CETC
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