Complex environment fixed point interference signal design method based on frequency diversity array

Abstract

The invention discloses a complex environment fixed point interference signal design method based on a frequency diversity array, relates to the field of array signal processing, and solves the technical problem of providing a way for reducing the interference of an interference wave beam for surrounding civil-use equipment with a same-direction frequency band. The method utilizes the distance andangle dependency of a frequency diversity array wave beam direction and a target two-dimensional positioning technology to optimize an emission wave beam, an interference signal is sent to an appointed area to guarantee interference accuracy, and meanwhile, power on an avoidance target position is lowered to reduce the influence of the interference wave beam on the surrounding environment. The method comprises the following steps that: initializing a frequency diversity array parameter; establishing an interference signal model; receiving a target echo signal, and determining an interferencetarget position; designing a guidance vector to enable a wave beam main lobe to aim at the interference target; calculating an avoidance target parameter; establishing a frequency offset optimizationmodel; and solving an optimal frequency offset to realize fixed point interference. By use of the method, the wave beam can be flexibly regulated to realize the fixed point interference, and radiationenergy received by each target is lowered to be minimum.

Description

technical field [0001] The invention relates to the field of array signal processing, in particular to a design method for a fixed-point interference signal in a complex environment of a frequency diversity array. Background technique [0002] In recent years, with the advancement of science and technology, various civil aircrafts have rapidly spread to thousands of households, bringing convenience to people, but also producing many negative effects caused by the misuse of electronic equipment. Take unmanned aerial vehicle (UAV), which is the most serious problem at present, as an example. In recent years, UAV technology has spread rapidly and widely. Frequent occurrence poses a huge challenge to social security and public security management. [0003] In order to maintain social security and the concealment of some special places, various research institutions and manufacturers at home and abroad have also developed a variety of interference methods, such as the "Falcon Sh...

AI Technical Summary

Problems solved by technology

However, the interference beams of these devices or systems cover the entire straight-line area in the same direction, and at this time will also cause unnecessary interference to surrounding civilian devices (such as routers, Bluetooth headsets, etc.) in the same direction and in the same frequency band

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