Multi-tone signal and discontinuous phase modulation signal identification method and device
A technology of phase modulation signal and identification method, which is applied in the field of signal processing and can solve problems such as wrong narrowband anti-jamming methods
Active Publication Date: 2021-10-01
NAT UNIV OF DEFENSE TECH
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the above-mentioned technical problems, the present invention proposes a method and device for identifying a multi-tone signal and a discontinuous phase modulation signal, to solve the problem of using a wrong method in the prior art for identifying a discontinuous phase modulation signal as a multi-tone signal. Problems with narrowband anti-jamming methods
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] 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.
[0030] combine first figure 1 A method for identifying a multi-tone signal and a discontinuous phase modulation signal according to an embodiment of the present invention is described. Such as Figure 1-2 As shown, the method includes the following steps:
[0031] Step S101: collect data and extract received signal from it s(t) ;
[0032] Step S102: performi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a multi-tone signal and discontinuous phase modulation signal identification method and device, and the method comprises the steps: collecting data, and extracting a receiving signal s (t) from the data; respectively performing FFT (Fast Fourier Transform) and STFT (Short Time Fourier Transform) on the received signal; determining the spectral line state of the receiving signal after FFT transformation, and determining a multi-tone signal and a potential discontinuous phase modulation signal according to the spectral line state; and determining a time-frequency domain spectrogram of the received signal after the STFT, identifying the potential discontinuous phase modulation signal, and determining that the potential discontinuous phase modulation signal is a discontinuous phase modulation signal or a multi-tone signal. According to the method provided by the invention, the classification and identification of the two signals are carried out, so that the receiving equipment is prevented from mistakenly applying the frequency domain null anti-interference method for the multi-tone interference signal to the interference suppression of the discontinuous phase modulation interference signal.
Description
technical field [0001] The present invention relates to the technical field of signal processing, in particular to a method and device for identifying multi-tone signals and discontinuous phase modulation signals in the technical field of digital signal processing of FM signals. Background technique [0002] Discontinuous phase modulation signals and multi-tone signals are often used to generate jamming signals and are used in various jamming machines. The discontinuous phase modulation signal is usually produced by truncation of the phase of the sine wave frequency modulation signal. Due to the discontinuity in the phase, its spectrum is broadened, so it can cause interference. Multi-tone signals are generated by the superposition of several sinusoidal signals, and are often used to generate multi-tone interference signals. Discontinuous phase modulation signals and multi-tone signals have certain similarities in time domain and frequency domain, but when they are used as ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06K9/00H04L27/20
CPCH04L27/2032G06F2218/02G06F2218/08G06F2218/12
Inventor 倪少杰黄龙孙广富鲁祖坤肖志斌谢郁辰孙一凡王思鑫桂钢铁赖成伟
Owner NAT UNIV OF DEFENSE TECH