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Anti-interference zero setting system

A zero-adjustment and signal technology, applied in the field of signal processing, can solve the problems of processing speed and transmission efficiency, cost, power, heat dissipation, inability to quickly complete target direction finding, and large calculation of processing architecture, so as to overcome delay overhead and simplify Device complexity, effect of reducing grating lobe effects

Active Publication Date: 2021-03-19
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This processing architecture has a large amount of calculation, and a large amount of data transmission between DSPs and between DSPs and FPGAs. Its processing speed and transmission efficiency are often strictly limited by cost, power, and heat dissipation. Adaptive anti-jamming weights

Method used

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0032] like Figure 1-7As shown, an anti-interference zeroing system includes: antenna radiation unit 10, receiving link 20, digital array 30, adaptive beamforming 40 and other modules, characterized in that: antenna radiation unit 10, digital array 30, adaptive Beamforming40. Wherein: the antenna radiating unit 10 plans sub-arrays of three shapes, and receives the incoming wave signal according to the approximate circular array design; the receiving link 20 performs low-noise amplification and filtering on the small signal received by the antenna unit, Suppressing out-of-band signals; the digital array 30 is quadrature-mixed to receive each channel signal, anti-aliasing filter, A / D sampling, down-sampling filter, amplitude / phase error calibration, and the array element calculated by adaptive beamforming 40...

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Abstract

The invention discloses an anti-interference zero setting system, and belongs to the technical field of signal processing. The system comprises an antenna radiation unit, a receiving link, a digital array module and an adaptive beam forming module, wherein a spatial incoming wave signal is received by the antenna radiation unit, amplified and filtered by the receiving link and then sent to the digital array module to complete primary digital beam forming of multiple signals in a subarray, and finally, the adaptive beam forming module forms a zero setting beam and a static beam. According to the invention, through the dimension reduction two-stage beam forming architecture, the calculation amount of beam forming and the adaptive zero setting requirement are both considered. Besides, the optimized non-uniform subarray and layout arrangement are used, so that the sidelobe performance of a directional diagram is improved, and the grating lobe influence of zero-setting beam forming is reduced. The method can be realized on the basis of FPGA and SoC pipeline iterative loop architecture, so that the calculation amount of adaptive zero setting can be further reduced, and the real-time performance of interference signal detection is improved.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to an anti-interference zeroing system. Background technique [0002] Because of its small size, low loss, low profile, easy beam zeroing, beam forming, multi-beam, and quick adjustment of beam pointing, the active phased array antenna has been used in satellite communication systems for more than ten years. Both the space segment and the user terminal are widely used. [0003] With the vigorous development of GEO high-throughput satellites and LEO constellations, as well as the rapid deployment of 5G base stations on the ground, frequency resources in space are becoming more and more crowded, and the risk of mutual interference is gradually increasing. Therefore, for satellite communication user terminal equipment, it becomes very necessary to make full use of the zeroing anti-interference ability of the phased array antenna. [0004] Usually, the anti-inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18513
Inventor 李靖刘彦刚智开宇冯世强杨锁强齐志刚杨华裕申昱东
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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