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

A signal modulation and ultra-low frequency technology, applied in the field of communication, can solve the problems of complex device structure, modulation accuracy and communication rate limitation, external device response time, etc., and achieve simple device structure, controllable communication rate, and controllable modulation accuracy Effect

Active Publication Date: 2021-06-01
XIDIAN UNIV
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  • Description
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  • Application Information

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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

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

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] Refer to attached figure 1 , the device structure of the present invention will be further described in detail.

[0046] The invention proposes a frequency modulation device for mechanical antenna ultra-low frequency signals, including a signal transmitting unit, a signal modulating unit and a signal receiving unit.

[0047] The signal modulation unit is composed of a baseband signal processing module and an extensible markup language XML processing module, wherein the output end of the baseband signal processing module is connected with the input end of the extensible markup language XML processing module.

[0048] The signal transmitting unit includes a driver, a high-speed servo motor, a spherical permanent magnet, a cylindrical fixed sleeve, a fixed platform, a coupling, a bolt, an antenna base, and a wire.

[0049] The signal receiving unit incl...

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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...

Claims

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Application Information

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IPC IPC(8): H04L27/12H04L27/14
CPCH04L27/12H04L27/14
Inventor 刘毅关恩强张佳浩万维东弓树宏王涵
Owner XIDIAN UNIV
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