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Short wave link establishment method based on Chirp frequency selection detection

A link establishment and frequency selection technology, applied in transmission monitoring, scattering propagation systems, electrical components, etc.

Pending Publication Date: 2022-04-29
西安烽火电子科技有限责任公司
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Problems solved by technology

Due to the combination of frequency selection and communication, and communication is the mainstay, the quality of frequency selection is often lower than that provided by dedicated real-time frequency selection systems

Method used

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  • Short wave link establishment method based on Chirp frequency selection detection

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Embodiment Construction

[0032] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention.

[0033] refer to figure 1 , a method for establishing a shortwave link based on Chirp frequency selective detection, comprising the following steps:

[0034] Step 1. Based on the standby state of station A and station B, set the same detection frequency range for the two stations, and divide the detection frequency range of the two stations into multiple consistent frequency points, and then update the two stations by obtaining the Beidou time information. The time of the frequency selection module of the station realizes the time synchronization of the frequency selection modules of the two stations; among them, station A is a Chirp detection transmitter, including the fr...

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Abstract

The invention relates to the field of short-wave communication, in particular to a short-wave link establishment method based on Chirp frequency selection detection. According to the invention, ionosphere channel parameters can be detected in real time, and the optimal working frequency is provided for a communication link in real time by processing detection data and forecasting various frequencies; optimal frequency band sorting can be carried out, and a passable optimal frequency is optimized; the method can be combined with a communication system, realizes real-time frequency changing, and provides guarantee for effective establishment of a link.

Description

technical field [0001] The invention relates to the field of short-wave communication, in particular to a method for establishing a short-wave link based on Chirp frequency selection detection. Background technique [0002] Short-wave communication mainly uses ionospheric reflection to realize long-distance communication. The shortwave channel is a time-varying dispersion channel, and its path loss, multipath delay and other parameters are constantly changing with frequency, location, season, and day and night. In modern short-wave communication, the communication frequency must be changed in real time according to the change of the channel to adapt to the change of the ionospheric channel. How to effectively find a quiet and efficient frequency point where both parties can communicate in the available crowded frequency band has become an urgent problem to be solved. [0003] In order to ensure effective communication quality, the communication frequency must be managed an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/309H04B17/382H04B7/22
CPCH04B17/309H04B17/382H04B7/22
Inventor 田甜周子谞刘琪李俊威张健
Owner 西安烽火电子科技有限责任公司
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