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EHF satellite anti-interference method based on aperiodic multilevel array

A non-periodic, array technology, applied in the field of satellite anti-jamming, can solve problems such as uplink signal attenuation, achieve the effects of suppressing grating lobes, improving evolution efficiency, and improving beam resolution

Active Publication Date: 2022-01-07
BEIHANG UNIV
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Problems solved by technology

When the interference source is in or close to the beam coverage area, it may cause interference to the satellite, so the direction of the interference signal and the uplink signal arriving at the satellite terminal will be very close, which will cause conventional adaptive zeroing to suppress the interference while also causing damage to the uplink signal. Significant attenuation

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  • EHF satellite anti-interference method based on aperiodic multilevel array
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  • EHF satellite anti-interference method based on aperiodic multilevel array

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] An anti-jamming method for EHF satellites based on aperiodic multi-level arrays, the specific steps refer to the attached figure 1 shown.

[0035] Among them, the hardware platform includes: antenna array,...

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Abstract

The invention relates to an EHF satellite anti-interference method based on a non-periodic multi-stage array. The method comprises the following steps: receiving a satellite signal based on an array antenna, obtaining a multi-stage array satellite signal, dividing the multi-stage array satellite into N sub-arrays, obtaining a first-stage sub-array and a second-stage sub-array, the first-stage sub-array is composed of M array elements, and the second-stage sub-array is composed of N array elements; then, the N sub-arrays are used as array elements to form the secondary sub-array; and calculating a non-periodic distribution result of the secondary sub-array, determining a central position coordinate of the sub-array, executing an evolutionary algorithm according to the configured and input parameters, and searching an optimal sub-array non-periodic distribution result. According to the aperiodic multi-stage array, the beam resolution is improved, grating lobe generation is restrained, and the uplink interference problem faced by satellite communication is effectively solved.

Description

technical field [0001] The invention relates to the technical field of satellite anti-jamming, in particular to an EHF satellite anti-jamming method based on an aperiodic multi-level array. Background technique [0002] The extremely high frequency (EHF) band satellite communication system has the characteristics of high frequency, wide frequency band and narrow beam. As the development direction of satellite communication in the future, it has been valued by various countries. In satellite system planning, anti-jamming capability is an important design index, especially in complex or confrontational scenarios. The interference to the satellite communication system can be divided into uplink interference and downlink interference. The uplink interference is mainly aimed at the satellite, and the downlink interference is mainly aimed at the terminal. [0003] In satellite communication, technologies such as spread spectrum and frequency hopping are often used to suppress int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28H04W24/02H04B7/185
CPCH04W16/28H04W24/02H04B7/18519
Inventor 王昊徐勇张杰斌
Owner BEIHANG UNIV
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