Quick calculation method for sidelobe of phased array antenna and sidelobe reduction method

A phased array antenna and fast calculation technology, applied in design optimization/simulation, etc., can solve problems such as low algorithm efficiency and long calculation time

Active Publication Date: 2021-06-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

For example, for a two-dimensional phased array antenna, if the number of angle samples in each dimension is m, the simulation of each pattern needs to calculate the m×m times pattern factor, which is optimized by the global optimal algorithm, and the genetic algorithm For example, after M cycles, the population of each cycle is N, and each cycle needs to calculate m×m×M×N sub-array factors. The calculation time is long and the algorithm efficiency is low.

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  • Quick calculation method for sidelobe of phased array antenna and sidelobe reduction method
  • Quick calculation method for sidelobe of phased array antenna and sidelobe reduction method
  • Quick calculation method for sidelobe of phased array antenna and sidelobe reduction method

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[0029] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0030] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0031] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

According to the phase control array antenna sidelobe quick calculation method and the sidelobe reduction method, the power directional diagram of the phase control array antenna is obtained based on the array factor of the phase control array antenna; deriving a power pattern of the phased array antenna to obtain a difference value between any point in the power pattern and a peak value closest to a reference point, and taking the difference value as a minor lobe accurate position of the phased array antenna; and substituting the side lobe position of the phased array antenna into the array factor of the phased array antenna, and calculating to obtain the side lobe size of the phased array antenna. Array synthesis can be performed on any one-dimensional and two-dimensional distributed phased antennas in combination with a genetic algorithm, quick amplitude reduction of the minor lobes of the phased array antennas is realized, the calculation time is short, and the algorithm efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of phased array antennas, and in particular relates to a fast calculation method for phased array antenna side lobes and a method for reducing side lobes. Background technique [0002] Phased array antennas are widely used in modern radar systems. To measure the performance of phased array antennas, it is necessary to study their pattern, and low sidelobes are an important index parameter of the pattern of phased array antennas. . [0003] Low sidelobes mean that electromagnetic wave energy is mainly emitted and received back from the designed beam direction. The phased array antenna pattern is related to parameters such as the scale of the phased array, array element distribution, feed amplitude, and feed phase. Among them, the feed amplitude is generally controlled by the attenuator of the array element, and the phase is controlled by the phase shifter. In modern radars, digital phase shifters are mainly...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27
CPCG06F30/27
Inventor 张毅缪科孙厚军王天翼
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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