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Synchronous frequency hopping sequence predication method based on chaos theory

A technology of frequency hopping sequence and prediction method, applied in the field of communication, can solve problems such as unsatisfactory effect, affecting model prediction accuracy, damage and so on

Inactive Publication Date: 2014-08-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Therefore, the existence of synchronous hopping destroys the original assumption, so that the frequency hopping sequence often has a certain deviation from the assumed chaotic model, which directly affects the accuracy of model prediction
In the case of frequency hopping synchronization, directly applying the existing prediction method, the effect is often not ideal

Method used

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  • Synchronous frequency hopping sequence predication method based on chaos theory
  • Synchronous frequency hopping sequence predication method based on chaos theory
  • Synchronous frequency hopping sequence predication method based on chaos theory

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Embodiment Construction

[0045] The present invention will be further elaborated below in conjunction with specific examples.

[0046] The synchronous frequency hopping sequence prediction method based on chaos theory of the present invention comprises the following steps:

[0047] The first step is to define the prediction model;

[0048] The second step is to define the error model;

[0049] The third step is to determine the embedding dimension and delay time;

[0050] The fourth step is to remove the sync skip segment;

[0051] The fifth step is to establish a radial basis function prediction model;

[0052] The sixth step is to predict the formula and predict the result.

[0053] In the first step, the distance between the state point X and the nearest k state points is defined as d i (i=1,2,...k), then the distance formula defining the state point X from the nearest k state points is formula (1)

[0054] d i =||X-X i || (1)

[0055] The mean value of the nearest k state points is given ...

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Abstract

The invention discloses a synchronous frequency hopping sequence predication method based on a chaos theory. The method includes the following steps that first, a prediction model is defined; second, an error model is defined; third, the embedded dimension and delay time are determined; fourth, step hopping fragments are removed; fifth, a radial basis function prediction model is established; sixth, a formula and a result are predicted. By means of the synchronous frequency hopping sequence predication method based on the chaos theory, scarce synchronous codes are filtered out, a chaos sequence is left, then, the chaos sequence prediction theory is predicted, and the prediction performance and the overall prediction hit rate of frequency hopping information codes are improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for predicting synchronous frequency hopping sequences based on chaos theory. Background technique [0002] As an effective means of anti-jamming communication, frequency hopping communication has been more and more widely used in the military field. Frequency hopping sequence is an important part of frequency hopping communication. Frequency hopping sequence has pseudo-random characteristics, so it has strong anti-interference ability. In order to generate the best anti-jamming signal, how to accurately and quickly measure the frequency hopping code of target frequency hopping communication has always been one of the research focuses in modern war theory. [0003] Establishing a forecasting model by analyzing the historical records of time series can not only analyze and study the internal mechanism of time series, but also contribute to the decision support of related time. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/715H04B1/7136
Inventor 吕明秦永利王伟杰刘馨
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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