Device and method for ultralow frequency signal frequency modulation of mechanical antenna

Abstract

The invention discloses a device and a method for ultralow frequency signal frequency modulation of a mechanical antenna. The device comprises a signal emission unit composed of a baseband signal processing module and an extensible markup language (XML) processing module, a signal modulation unit composed of a driver, a high-speed servo motor and a spherical permanent magnet, and a signal acquisition module, a filtering module, a sampling judgment module, a barker code identification module, and a signal receiving unit which is composed of a baseband signal selection module. The method comprises the following steps: (1) preprocessing an original baseband signal; (2) generating a motion task; (3) transmitting an ultra-low frequency modulation signal; (4) generating a CSV format file of the received signal; and (5) demodulating the received signal. The device has the advantages of controllable modulation precision and communication rate and simple structure.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a device and method for frequency modulation of mechanical antenna ultra-low frequency signals in communication modulation technology. In the present invention, the signal modulation unit in the device accelerates and decelerates the mechanical antenna in the drive device to reach different rotational speeds, so as to realize the frequency modulation of the signal transmitted by the mechanical antenna, and realize the extremely low frequency ELF (Extremely Low Frequency) / ultra-low frequency SLF ( Super Low Frequency) frequency band communication. Background technique [0002] For ultra-low frequency SLF electromagnetic waves, their larger wavelengths lead to weaker skin effects, stronger underwater or underground transmission, greater propagation depth, and wider propagation distances. Commercial communications underwater or underground The application prospect is h...

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Problems solved by technology

[0006] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and propose a device and method for frequency modulation of mechanical antenna ultra-low frequency signals to solve the limitation of modulation accuracy and communication rate in the existing mechanical antenna ultra-low frequency frequency modulation technology Response time of external devices, problems with complex device structures

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