Short-wave frequency sweep detection method based on exponential dynamic model

A technology of dynamic scanning and detection methods, which is applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of single scanning detection mode and long detection cycle, so as to improve frequency selection efficiency, reduce detection cycle, and optimize scanning detection mode Effect

Inactive Publication Date: 2019-01-18
PLA DALIAN NAVAL ACADEMY
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Problems solved by technology

The second is the conventional scanning detection mode: the detection is carried out at equal step intervals in the short-wave frequency range, the scanning detection method is single, and the detection period is long

Method used

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  • Short-wave frequency sweep detection method based on exponential dynamic model

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Embodiment Construction

[0012] The specific embodiments of the present invention are described in detail below in conjunction with the technical solutions.

[0013] Step 1: Determine the short-wave frequency detection range between the calling station A and the called station B, and set the initial frequency f o , the termination frequency f d , fixed step interval Δf g , in MHz; at the same time, set the communication quality threshold of called station B based on the minimum signal-to-noise ratio of the actual communication equipment;

[0014] Step 2: The calling station A sends a detection signal to the called station B at the initial frequency, and the called station B is in a synchronous receiving state; if the detection frequency point f t If the communication quality is lower than or equal to the threshold, the called station B does not need to feed back the detection result information. g Continue linear scan detection, that is, the detection frequency f at the next moment t+1 =f t +Δf ...

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Abstract

The invention belongs to the application field of the short-wave communication technology, and relates to a short-wave frequency scanning detection method based on an exponential dynamic model. The method comprises the steps: sets input parameters according to requirements: start and stop detection frequency, linear fixed step interval, exponential parameter and communication quality threshold; performing linear scanning detection of a channel between a calling station A and a called station B based on the fixed step interval; judging the communication quality change trend according to the result of link quality analysis after several times of detection; switching to an exponential dynamic scanning detection stage when the communication quality is higher than the threshold; employing a linear method to continue the current scanning detection when the communication quality is lower than or equal to the threshold; finally obtaining the communication quality of each detection frequency point and performing the fitting of the communication quality of the whole frequency band in the detection interval. The method can greatly reduce the detection period while ensuring the frequency detection accuracy, improves the real-time detection frequency selection efficiency, optimizes the existing scanning detection mode of a short-wave frequency detection device, and improves the performanceof the short-wave frequency detection device.

Description

technical field [0001] The invention belongs to the application field of short-wave communication technology, and relates to a short-wave frequency scanning detection method based on an exponential dynamic model. Background technique [0002] Short-wave communication has the advantages of long communication distance and strong anti-destruction performance, and is one of the important means to realize medium and long-distance communication. The ionosphere, as the propagation medium of short-wave communication, has time-varying characteristics, and the selection of short-wave communication frequency is directly related to the actual effect of communication. At present, there are two main detection modes in the commonly used real-time frequency selection technology. One is fixed frequency detection: the frequency selection is performed on several preset frequency points in the shortwave communication frequency management system in sequence. Since the setting of frequency point...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/309H04B17/336H04B1/00
CPCH04B1/00H04B17/00H04B17/309H04B17/336
Inventor 徐池田晓铭张海勇郭谊贺寅韩东李梁李利柏羽刘冠邑
Owner PLA DALIAN NAVAL ACADEMY
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