Short-wave interference signal arrival power evaluation method based on forward communication data

Abstract

The invention discloses a short-wave interference signal arrival power evaluation method based on forward communication data. The method comprises the following steps: step A, analyzing channel parameters of a link by using a communication signal of a forward link; step B, determining a relationship between interference signal power fluctuation and channel parameters; and step C, evaluating the power of the interference signal reaching the target point. The invention provides a short-wave interference signal arrival power evaluation method based on forward communication data, which comprises the following steps of: analyzing a channel parameter of a link according to a received forward communication signal, and evaluating the arrival power of an interference signal according to the relationship between the power fluctuation of the short-wave interference signal and the channel parameter. The evaluation method overcomes the defects that an existing propagation model estimation method is high in complexity, large in calculation error and multiple in input parameters, and is high in estimation accuracy in actual use.

Description

technical field [0001] The invention belongs to the field of short-wave interference and short-wave channel modeling, in particular to a method for evaluating the arrival power of short-wave interference signals based on forward communication data in the field. Background technique [0002] Due to the time-varying dispersion characteristics of the short-wave ionospheric reflection channel, the power of the jamming signal reaching the jamming target is seriously attenuated, and the envelope of the jamming signal can fade up to 50 or 60 dB instantaneously, resulting in extremely unstable jamming effects. Simply increasing the power of the transmitted interference signal will bring about a series of security issues such as poor interference concealment. With the development of short-wave jamming technology, short-wave interference is currently moving from high-power suppressed interference to refined interference. The key issue of refined interference It is an accurate assessme...

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Problems solved by technology

[0002] Due to the time-varying dispersion characteristics of the short-wave ionospheric reflection channel, the power of the jamming signal reaching the jamming target is seriously attenuated, and the envelope of the jamming signal can be at most 50 or 60 dB instantaneously, resulting in extremely unstable jamming effects.

Simply increasing the power of the transmitted interference signal will bring about a series of security issues such as poor interference concealment. With the development of short-wave jamming technology, short-wave interference is currently moving from high-power suppressed interference to refined interference. The key issue of refined interference It is an accurate evaluation of the arrival power of randomly fluctuating short-wave interference signals

[0003] At present, the research on short-wave signals is mainly concentrated in the field of short-wave communication, while the focus of short-wave interference is different from that of short-wave communication. Short-wave communication focuses on small-scale signal changes, while short-wave interference focuses on the average power change of interference signals over a period of time. Due to short-wave The power of the interference signal will change randomly with the random fluctuation of the ionosphere, which is difficult to describe accurately. The error of the model calculation method is about 20dB. At present, there is no mature method to evaluate the arrival power of the short-wave interference signal, and it is impossible to evaluate the power of the interference signal on a small scale. Volatility characteristics on

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