Weak binary phase shift keying signal blind detection method and device

A phase-shift keying and binary technology, which can be applied to receiver-specific devices, phase-modulated carrier systems, and transmission modification based on link quality, etc. It can solve the problems of difficult blind detection of weak binary phase-shift keying signals, etc.

Inactive Publication Date: 2020-07-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention proposes a method and device for blind detection of weak binary phase-shift keyi

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  • Weak binary phase shift keying signal blind detection method and device
  • Weak binary phase shift keying signal blind detection method and device
  • Weak binary phase shift keying signal blind detection method and device

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[0083] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0084] combine first Figure 1-2 Describe the method for the blind detection of weak binary phase shift keying signal of an embodiment of the present invention, figure 1 It is a flowchart of a method for blind detection of a weak binary phase shift keying signal according to an embodiment of the present invention, figure 2 It is a system diagram of the method ...

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Abstract

The invention provides a weak binary phase shift keying signal blind detection method and device. The method comprises the following steps: determining a signal frequency band range for weak binary phase shift keying signal blind detection; determining the number n of sub-channels, and configuring a Duffing system corresponding to the sub-channel for each sub-channel; inputting a signal to be subjected to blind detection into each sub-channel, and decomposing the signal to be subjected to blind detection into sub-band signals to be subjected to blind detection through the filter of each sub-channel; performing S transformation on the output of the Duffing system corresponding to each sub-channel to obtain the output envelope of the Duffing system of each sub-channel; and detecting whetherthe output of the Duffing system corresponding to each sub-channel has an intermittent chaotic state or not to judge whether a weak binary phase shift key control signal exists or not. According to the scheme of the invention, the blind detection difficulty of weak binary phase shift keying signals is reduced.

Description

technical field [0001] The invention relates to the field of signal detection, in particular to a method and device for blind detection of weak binary phase shift keying (BPSK) signals. Background technique [0002] Binary Phase Shift Keying (BPSK) signals have high frequency band utilization and strong anti-noise ability, and are widely used in many fields such as military and civilian. For third-party blind reconnaissance, weak binary phase-shift keying signals are often received. Therefore, the blind detection of weak binary phase-shift keying signals has always been the key research content of radio monitoring and communication reconnaissance. Especially under the condition that the signal-to-noise ratio is lower than -10dB, the problem of blind detection of the weak binary phase-shift keying signal is relatively difficult. [0003] The prior art "Research on Blind Detection of Weak BPSK Signal Using Duffing Oscillator and S-Transform" discloses a method for blind detec...

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Application Information

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IPC IPC(8): H04L1/00H04L27/22
CPCH04L1/0038H04L27/22
Inventor 吴彦华陈慧贤马庆力朱然刚王红军李建强柏诗玉
Owner NAT UNIV OF DEFENSE TECH
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