Anti-interference device and anti-interference method for time slot switching working mode

Abstract

The invention provides an anti-interference device and an anti-interference method for time slot switching working mode, including a low-noise amplifier module, a band-pass filter module, a down-conversion module, an interference cancellation module, an up-conversion module, and a band-pass filter Module, amplification module, control module and frequency synthesizer module, the invention combines the anti-jamming algorithm of time-domain self-adaptive weight optimization and maintenance, and quickly iteratively calculates through the air-space least mean square algorithm of the power criterion within the time slot switching time of the station Merge the weights and maintain the optimal weights after the time slot switching is completed. Without knowing the interference and signal direction, the interference can be precisely nulled on the pattern of the receiving antenna of the communication station, and all kinds of interference can be suppressed. Maintain the integrity of useful communication signals to solve the anti-interference problem of communication stations in actual communication use. It has been proved by experiments that this simple and efficient weight combination method can improve the anti-interference ability of a certain type of radio station by nearly 30dB, and has a good application prospect in anti-jamming communication of radio stations.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, and relates to a communication anti-jamming device and an anti-jamming method for a station in a time slot switching working mode. Background technique [0002] With the maturity of the time slot switching technology, the time slot switching of radio stations in the military and civil fields has an incomparable role, and the research, development and application of the time slot switching technology have attracted more and more attention. However, communication stations are often faced with harsh operating environments and are susceptible to various intentional or unintentional interferences, especially strong interferences facing countermeasures, so they cannot work normally. The weight combination interference cancellation technology is an important technical means to solve the problem of radio frequency interference. It completes the elimination of interference signals at th...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of poor timeliness in interference suppression in existing digital interference cancellation schemes and analog interference cancellation schemes, the present invention mainly provides a communication anti-interference device and anti-interference method for time slot switching working mode radio stations. The scheme can make full use of the radio switching time slots, complete the optimization of the weights and maintain the best anti-interference weights in the working time slots, which is well compatible with the time division multiple access characteristics of the radio stations, and solves the problem of existing technologies in Suppresses the problems of adaptive adjustment, cancellation speed and timeliness in various intentional and unintentional interference situations

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