Active anti-interference method for surrounding transmission signal by constant electric field and control device thereof

Abstract

The invention discloses an active anti-interference method for surrounding a transmission signal by a constant electric field and a control device thereof, and the method comprises the steps: applying a DC voltage between an anti-interference core wire conductor and a cable shielding layer conductor of a cable, and obtaining the electric displacement at the axis of the cable; calculating the electric field intensity of the radial position between the cable shielding layer conductor and the anti-interference core wire conductor; calculating charges gathered in the unit length cable needing to be repaired between the cable shielding layer conductor and the anti-interference core wire conductor; calculating the capacitance between the cable shielding layer conductor and the anti-interference core wire conductor; calculating electric field deviation rectification energy, and taking the sum of power supply energy and the electric field deviation rectification energy as anti-interference total energy; and repairing the electric field which changes due to the influence of the interference signal. According to the active anti-interference method for surrounding the transmission signal by the constant electric field, the electric field is kept constant by utilizing the strong deviation correction capability of the DC stabilized power supply or the storage battery, the influence of a changing electromagnetic field in the environment on the transmission signal is eliminated, and the communication and communication quality are ensured.

Description

technical field [0001] The invention belongs to the technical field of communication and communication, and in particular relates to an active anti-interference method and a control device of a constant electric field surrounding a transmission signal. Background technique [0002] The current anti-jamming measures mainly use the method of grounding the conductor of the cable shielding layer, which is a passive passive anti-jamming measure, and its disadvantages are as follows: [0003] 1. For the metal mesh shielding layer, there are always interference signals of a specific frequency or wavelength that can penetrate the shielding layer and affect the transmission quality and stability of the signal. [0004] 2. In order to prevent the shielding layer from forming ground loops, the shielding layer can only be grounded at one point at a single end. When the cable reaches a certain length, for example, the length reaches or exceeds hundreds of meters, thousands of meters, or ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide an active anti-jamming method in which a constant electric field surrounds the transmission signal, to solve the problem that the interference signal of a specific frequency or wavelength can penetrate the shielding layer and affect the transmission quality and stability of the signal, and at the same time solve the problem of the prior art The problem of poor anti-interference ability when the ground point is far away

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