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A multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation

A technology of linear frequency modulation signal and communication method, which is applied in the direction of electrical components, transmission systems, etc., can solve the problems of anti-interference performance degradation, achieve good anti-broadband jamming performance, good anti-narrowband interference, and improve multi-sequence frequency hopping technology Effect

Active Publication Date: 2019-05-28
ARMY ENG UNIV OF PLA
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Problems solved by technology

According to the analysis, this method has a good anti-interference effect, but it has a fatal weakness, that is, when the dual frequency is interfered, its anti-interference performance drops sharply

Method used

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  • A multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation
  • A multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation
  • A multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation

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Embodiment Construction

[0045] The technical solutions of the present invention will be described in detail below in conjunction with examples and accompanying drawings.

[0046] The present invention is suitable for multi-sequence frequency hopping, but in order to facilitate analysis and description without loss of generality, a special form of multi-sequence frequency hopping, that is, dual-sequence frequency hopping, is used as an example to illustrate, and subsequent introductions are all based on dual-sequence frequency hopping ( Such as figure 1 shown). Those skilled in the art can replace it with other forms of multi-sequence frequency hopping on the basis of the following description.

[0047] 1. The launch part (such as figure 2 shown)

[0048] Step 1: Generate a dual-sequence frequency-hopping signal (such as image 3 shown)

[0049]The dual-sequence frequency hopping technology adopts the concept of "channel is the message". The frequency hopping frequency does not carry information...

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Abstract

The invention relates to a multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation, which comprises the following steps: a frequencymodulation slope is replaced with a controllable pseudo-random number in a linear frequency modulation signal; On the basis, the multi-sequence frequency hopping technology is combined with the multi-sequence frequency hopping technology; The carrier frequency of each hop is mixed with one pseudorandom linear frequency modulation signal, it is ensured that the extended bandwidth of the pseudorandom linear frequency modulation signal is smaller than the channel bandwidth, and a communication anti-interference waveform is generated. Based on multi-sequence frequency hopping, the multi-sequence frequency hopping anti-interference communication method based on pseudo-random linear frequency modulation is provided by taking further improvement of the anti-interference capability of multi-sequence frequency hopping communication as a research starting point, and can be applied to practice as an emergency communication means.

Description

technical field [0001] The invention relates to an anti-jamming communication method, which is suitable for the field of wireless communication anti-jamming, in particular to a multi-sequence frequency-hopping anti-jamming communication method based on pseudo-random linear frequency modulation. Background technique [0002] In order to improve the anti-interference ability of the system, spread spectrum communication technology is widely used in various wireless communication systems. The commonly used spread spectrum communication technology mainly includes frequency hopping spread spectrum, direct spread spectrum and direct spread / frequency hopping combined technology and so on. [0003] Direct spread spectrum technology has the characteristics of strong anti-narrowband interference capability and low probability of interception. However, once the interfering party detects the working frequency range of the communicating party and implements broadband interference, the com...

Claims

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Application Information

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IPC IPC(8): H04B1/715H04B1/7156
Inventor 孙慧贤全厚德唐志强崔佩璋刘建成
Owner ARMY ENG UNIV OF PLA
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