Beam control method based on frequency diversity array antenna

A technology of frequency diversity array and beam control, applied in the field of antenna array, can solve the problems of amplifying noise power and reducing antenna signal-to-interference-noise ratio, etc., to achieve the effect of eliminating periodicity and enhancing signal receiving power

Active Publication Date: 2018-11-23
SHENZHEN UNIV
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Problems solved by technology

However, the main lobe of the pattern formed by this method is relatively wide, which will amplify the noise power, thereby reducing the signal-to-interference-noise ratio of the FDA antenna output

Method used

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  • Beam control method based on frequency diversity array antenna
  • Beam control method based on frequency diversity array antenna
  • Beam control method based on frequency diversity array antenna

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] Since the traditional FDA antenna frequency offset adopts the form of uniform increase, the FDA array pattern will appear periodic in the distance dimension, resulting in multiple main lobes, which will affect the signal receiving power at the actual target. To solve this problem, this invention uses a random frequency offset method.

[0030] The embodiment provided by the present invention is a beam steering method based on a frequency diversity array antenna, such as figure 1 As shown, the steps of the beam control method include:

[0031] Step S1: Set the transmission frequen...

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Abstract

The invention provides a beam control method based on a frequency diversity array antenna. The method comprises the steps of establishing a random frequency offset antenna array transmission signal model by setting a transmission frequency offset of each antenna array element transmission signal in the antenna array to be distributed uniformly; according to spatial position information of a desired target, calculating a received signal model at the desired target spatial position; calculating a weight coefficient of each antenna element in the antenna array according to the received signal model; and controlling the transmission of each antenna array element transmission signal according to the weight coefficient of each antenna element to form a beam. The method sets the frequency offsetsto be distributed uniformly based on the traditional frequency diversity antenna, and can effectively eliminate the periodicity in the distance dimension during the beam transmission process of the antenna array elements, thereby enhancing the signal receiving power at the target.

Description

technical field [0001] The invention relates to a beam control method based on a frequency diversity array antenna, and relates to the technical field of antenna arrays. Background technique [0002] In the traditional satellite navigation carrier phase real-time dynamic difference (RTK, Real Time Kinematic) technology, the transmitting station of the reference station usually uses a common omnidirectional antenna. Therefore, the anti-interference ability of the transmitting antenna of the base station is relatively weak, and there is no directional gain function. If a phased array antenna is used, the antenna beam and pointing shape can be changed quickly and flexibly in the set airspace, so that the gain in the desired target direction is maximized, and at the same time, a null trap can be formed at the interference point, thereby reducing the gain at the interference point. [0003] However, with the rapid development of jamming technology, phased array antennas are grad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0617Y02D30/70
Inventor 李强黄磊周汉飞赵博孙维泽许景新
Owner SHENZHEN UNIV
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