Conjugate gradient array anti-interference method

A conjugate gradient and array technology, applied in the direction of communication interference, electrical components, etc., can solve the problems of large covariance matrix, slow weight update, increased calculation amount, etc., to reduce the number of iterations, easy to change, easy to debug Effect

Active Publication Date: 2020-07-24
NANJING BUWEI COMM EQUIP CO LTD
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Problems solved by technology

[0004] When the number of array elements increases or the space-time algorithm is used, the covariance matrix will become very large, and the direct inversion algorithm will significantly increase the amount of calculation, resulting in slower weight update

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[0043] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0044] Examples of embodiments are shown in the drawings, wherein like or similar reference numerals denote like or similar elements or elements having same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0045] refer to Figure 1-2 , according to a conjugate gradient array anti-interference method according to an embodiment of the present invention, the steps of the method are as follows:

[0046] Step 1. Construct an adaptive array anti-jamming optimization problem model constructed from...

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Abstract

The invention discloses a conjugate gradient array anti-interference method. The method comprises the following steps: 1, constructing an adaptive array anti-interference optimization problem model constructed by a signal model for satellite navigation positioning, radar detection and wireless communication application scenarios; 2, based on the conjugate gradient theory, solving the weight of each antenna or sensor in the adaptive array by using a low-complexity conjugate iterative algorithm; and 3, achieving real-time solving of the weight by using a field programmable device. Complexity ofa traditional algorithm can be effectively reduced through iterative weight calculation of conjugate gradients, rapid self-adaptive anti-interference calculation is achieved, and the real-time anti-interference requirement of motion equipment can be met.

Description

technical field [0001] The invention relates to the technical field of multi-sensor or antenna anti-jamming array signal processing, in particular to a conjugate gradient array anti-jamming method. Background technique [0002] Array anti-jamming technology is often used in satellite navigation and positioning, radar detection, and wireless communication applications. The signal is extremely weak, which can easily cause the receiving end to be interfered and lose signal information. Typical jamming includes suppressive jamming and deceptive jamming, and the most widely used one is suppressive jamming. For suppressive jamming, the most effective method at present is the power inversion method. The power inversion method tries to minimize the output power of the array to achieve the purpose of suppressing interference, and its adaptive nature may lead to suppressing useful signals during processing. And when the useful signal level is below the noise, the adaptive array will ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
CPCH04K3/43H04K2203/34
Inventor 陈鹏韩蔚峰曹振新
Owner NANJING BUWEI COMM EQUIP CO LTD
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