Anti-interference realization method of self-adaptive array antenna

A technology of array antenna and implementation method, applied in diversity/multi-antenna system, radio transmission system, space transmit diversity and other directions, can solve problems such as large amount of calculation, small amount of calculation, poor real-time performance, etc., achieve small amount of calculation and improve work efficiency Good frequency and real-time performance

Active Publication Date: 2018-08-28
10TH RES INST OF CETC
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Problems solved by technology

[0013] The purpose of the present invention is to provide an adaptive array antenna anti-interference method with small calculation amount, good real-time performance, better

Method used

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  • Anti-interference realization method of self-adaptive array antenna
  • Anti-interference realization method of self-adaptive array antenna
  • Anti-interference realization method of self-adaptive array antenna

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Embodiment Construction

[0034] refer to figure 1 . In this embodiment, the uniform circular array antenna is an array antenna with four array elements, and the distance between each array element is half the wavelength of the desired signal. Each array element receives the desired signal and interference signal from different directions, and after amplification, down conversion and analog After several AD samples, four digital input signals are obtained; then the data preprocessing module performs five-order time-domain taps on the four digital signals to obtain continuous space-time two-dimensional snapshot data, and at the same time according to the expected signal provided by the host computer to The corresponding space-time two-dimensional steering vector is obtained, and the space-time two-dimensional snapshot data and its corresponding space-time two-dimensional steering vector are sent to the simplified MVDR algorithm implementation module; then the minimum variance distortion-free response MV...

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Abstract

The invention discloses an anti-interference realization method of a self-adaptive array antenna, and aims at providing an anti-interference method with small calculated amount, strong real-time and better anti-interference effect. The method is realized through the following technical schemes: a data pre-processing module performs N-order time domain tapping on M path digital signals to obtain continuous space-time two-dimension snapshot data in a uniform circular array antenna with antenna array element number of M, and a space-time two-dimension guiding vector is obtained according to a desired signal direction provided by an upper computer; a guiding vector residual matrix is computed by using the space-time two-dimensional guiding vector through a minimum variance distortionless response MVDR algorithm simplification realization module, and the space-time two-dimension beam synthesis and space-time two-dimension weight iteration are synchronously performed according to a built-inbeam synthesis module and a weight iteration module by combining the space-time two-dimension snapshot data; and an array output module converts the digital signal after the beam synthesis into an analog signal through a digital-to-analog DA converter, and the analog signal is sent to a back-end processor after being output in a up-conversion way through an up-conversion module.

Description

technical field [0001] The invention relates to an achievable signal processing method suitable for an adaptive array antenna anti-interference system, in particular to an adaptive array antenna anti-interference technology. Background technique [0002] Adaptive array antenna is an active antenna with anti-interference function, which can be used in sonar, radar navigation and communication and other application fields. The adaptive array antenna structure is very different from the traditional passive antenna. It includes passive array, RF front-end, and signal processing modules in three different fields and different functions. It combines the antenna array arrangement with adaptive signal processing, automatically controls the antenna adjustment parameters through array signal processing, performs complex weighting on the input signals of each array element, completes the amplitude and phase adjustment of the received signal, and realizes spatial filtering. The main be...

Claims

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Application Information

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IPC IPC(8): H04B7/08
CPCH04B7/086
Inventor 幸璐璐郝黎宏何斌
Owner 10TH RES INST OF CETC
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