Low-frequency time code time service signal carrier frequency optimization method and system

A signal carrier, low frequency technology, applied in the field of low frequency time code timing signal carrier frequency optimization

Pending Publication Date: 2022-01-28
封开低频时码授时台 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Since the selection of current frequency points needs to consider geographical parameters and population distribution, comprehensive seasonal changes, frequency synthesis and other multiple factors, it is also necessary to avoid the existing low-frequency broadcast station frequency points near the station; in addition, the current preferred low-frequency frequency The research work has not yet formed a system, and there is a large gap in technology

Method used

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  • Low-frequency time code time service signal carrier frequency optimization method and system
  • Low-frequency time code time service signal carrier frequency optimization method and system
  • Low-frequency time code time service signal carrier frequency optimization method and system

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Embodiment Construction

[0050] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0051] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a low-frequency time code time service signal carrier frequency optimization method and system, and the method comprises the following steps: carrying out the first screening of frequency points based on a preset antenna effective radiation power threshold value, and obtaining a first screening result; carrying out the second screening of the frequency points based on the in-band interference factors, and obtaining a second screening result; carrying out the third screening of the frequency points based on the sky-ground wave interference characteristic factors, and obtaining a third screening result; based on the first screening result, the second screening result and the third screening result, carrying out screening according to frequency generation factors to obtain a final screening result, and completing the low-frequency time code time service signal carrier frequency optimization. According to the method provided by the invention, the low-frequency time code time service signal carrier frequency meeting the preset requirement can be selected.

Description

technical field [0001] The invention belongs to the field of radio communication technology and radio wave propagation technology, and in particular relates to a method and system for optimizing the carrier frequency of a low-frequency time code timing signal. Background technique [0002] The range of low-frequency radio waves is 30-300kHz, accounting for about one hundred billionth of the entire spectrum resource. Compared with other frequency bands, the propagation characteristics of low-frequency radio waves have some unique characteristics. The propagation of low-frequency radio waves mainly depends on ground waves and ionospheric reflections (sky wave signals); among them, the ground wave propagation channel can be regarded as a linear matching network, and the signal passes through After the channel, the attenuation of the field strength and the change of the phase are very slow; the sky-wave signal formed by ionospheric reflection can receive the low-frequency signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/382
CPCH04B17/382
Inventor 冯平黄璐希陈颖鸣赵凡王昕罗欣羽
Owner 封开低频时码授时台
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