Beam forming method of airborne phased-array antenna

A beamforming method and phased array antenna technology, applied in diversity/multi-antenna systems, radio transmission systems, space transmit diversity and other directions, can solve the problems affecting the radio frequency stealth ability of the machine, and achieve good space anti-interference ability, The effect of compact antenna layout and good beam pointing ability

Active Publication Date: 2021-10-19
北京通广龙电子科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The higher antenna sidelobe increases the probability of being intercepted, which seriously affects the radio frequency stealth capability of the machine

Method used

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  • Beam forming method of airborne phased-array antenna
  • Beam forming method of airborne phased-array antenna
  • Beam forming method of airborne phased-array antenna

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Embodiment 1

[0037] Based on the quadratic programming theory (QP), the present application proposes an average sidelobe minimum beamforming algorithm. The algorithm first determines the pointing angle θ of the beam des , and give the angle range (θ l ,θ u ), where θ des ∈(θ l ,θ u ); Secondly, in order to achieve sidelobe suppression, it is necessary to find the weight vector ω that can minimize the sidelobe power; finally, according to the obtained weight vector ω, adjust the amplitude value and phase value of each array element of the phased array antenna to realize the beam shape. Solve the problem of high antenna sidelobes in single-beam mode and multi-beam mode of traditional phased arrays.

[0038] The technical scheme of the present application is described in detail below:

[0039] This embodiment provides a beamforming method for an airborne phased array antenna, and the beamforming method is applicable to a single beam mode and is also applicable to a multi-beam mode.

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PUM

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Abstract

The invention provides a beam forming method for an airborne phased-array antenna, and the method comprises the steps: determining a pointing angle [theta]des of a beam, and an angle range ([theta]l, [theta]u) of a side lobe, which needs to be suppressed, of the pointing angle, wherein the [theta]des belongs to the ([theta]l, [theta]u); determining a weight vector omega for minimizing sidelobe power according to the pointing angle [theta]des and the angle range ([theta]l, [theta]u); according to the weight vector omega, adjusting an amplitude value and a phase value of each array element of the phased-array antenna to realize beam forming. According to the method, higher sidelobe suppression capability can be obtained by adjusting constraint conditions, and the method is short in operation time, high in efficiency and convenient for engineering implementation.

Description

technical field [0001] The present application relates to the technical field of antennas, in particular to a beamforming method of an airborne phased array antenna. Background technique [0002] The existing airborne phased array antennas do not or rarely use beamforming algorithms, and the antennas have high side lobes. When different antennas work at the same time, there is mutual interference between them, which will cause the antennas to fail to work normally. The side lobes of the antenna are the primary intercept targets for enemy reconnaissance receivers. The higher antenna sidelobe increases the probability of being intercepted, which seriously affects the radio frequency stealth capability of the aircraft. The phased array antenna with multi-beam mode can further improve the side lobes of the antenna. [0003] In view of this, it is an urgent problem to be solved in this technical field to overcome the deficiencies in this prior art product. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0617Y02D30/70
Inventor 颜滨张大鹏
Owner 北京通广龙电子科技有限公司
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