Electromagnetic vector sensor array-based anti-independent saturated interference communication method

Abstract

The invention discloses an electromagnetic vector sensor array-based anti-independent saturated interference communication method and belongs to the communication, signal analysis, parameter estimation and electronic confrontation field. With the electromagnetic vector sensor array-based anti-independent saturated interference communication method adopted, anti-saturated interference beams can be formed, and anti-interference communication can be realized. The method of the invention includes the following steps that: desired signals are sent by communication base stations in a plurality of different sites, wherein the desired signals are coherent signals; an electromagnetic vector sensor array is adopted as a receiving end, the high-order cumulant of received data is calculated, independent interference is filtered out through using a characteristic that the electric field steering vector of independent signals is perpendicular to the electromagnetic steering vector of the independent signals, so that the estimated value of the direction vector of the desired signals and a signal source position are obtained; and a weight vector is calculated according to a beamforming criterion, anti-interference beams are formed, anti-interference communication is realized, and whether signals are spoof signals can be detected according to the signal source position. The electromagnetic vector sensor array-based anti-independent saturated interference communication method of the invention is applicable to the anti-independent saturated interference communication technologies of aircrafts such as an unmanned aerial vehicle.

Description

technical field [0001] The invention relates to the fields of communication, signal analysis and parameter estimation, and electronic countermeasures, in particular to an anti-independent saturation interference communication method based on an electromagnetic vector sensor array. Background technique [0002] Various man-made and natural electromagnetic waves are flooding the earth's surface and space. The anti-jamming and anti-spoofing tasks of drones and other aircraft are becoming more and more important. Electronic countermeasures can be carried out in time, space, frequency and polarization domains. Time, frequency, and polarization domain resources are shared by both the enemy and us in military confrontation, and only the airspace resources are distinct from the enemy. Therefore, the use of beamforming technology in the airspace for anti-jamming and anti-spoofing communications has better reliability. [0003] MIMO technology comprehensively considers channel charact...

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Problems solved by technology

[0003] MIMO technology comprehensively considers channel characteristics, uses multiple transmitting sources and receiving elements to optimize and coordinate the allocation of space, time, frequency, and polarization resources, and optimize system performance. Beamforming technology has become a research hotspot, which greatly improves communication performance. , in the presence of saturated interference, the number of interference sources exceeds the system degrees of freedom, and there is no stable communication quality

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