Interference identification method based on radio spectrum pattern identification

An identification method and radio technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as inability to judge target signals, and achieve the effects of strong identification ability, simple characteristic parameters, and good achievability

Active Publication Date: 2016-01-06
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

[0002] In the field of radar, when the interference signal and the target signal exist at the same time, two or more targets can be detected in the time domain or frequency domain, but after detection, it is often impossible to judge which is the target signal and which is the interference Signal

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  • Interference identification method based on radio spectrum pattern identification
  • Interference identification method based on radio spectrum pattern identification
  • Interference identification method based on radio spectrum pattern identification

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Embodiment Construction

[0037] According to Figure 1 ~ Figure 3 , A detailed description of the preferred embodiments of the present invention.

[0038] Such as figure 1 As shown, the present invention provides an interference identification method based on radio spectrum pattern identification, which includes the following steps:

[0039] Step S1, through signal accumulation, detecting that multiple targets are separable signals in time;

[0040] Such as figure 2 As shown, detecting that multiple targets are separable signals in time means that multiple targets do not overlap in the time dimension. This is a prerequisite for the interference identification method based on radio spectrum pattern recognition provided by the present invention. If it overlaps or partially overlaps in time, it is not suitable to adopt the interference identification method of the present invention;

[0041] Step S2, over-sampling the signal to extract spectral characteristic information in the signal spectral components;

[00...

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Abstract

An interference identification method based on radio spectrum pattern identification is disclosed. The method is characterized in that through signal accumulation, detecting a plurality of objects which can be separable signals on an aspect of time; then, carrying out oversampling on the signals; and then carrying out signal interception on a time domain waveform of a position where the objects are located, carrying out zero fill on the intercepted waveform, carrying out frequency spectrum transformation on the signals after zero fill so as to acquire a frequency domain signal; carrying out multiple pulse smoothing processing on the frequency domain signal; extracting spectrum line characteristic information of the signal; finally, comparing the extracted spectrum line characteristic to a signal parameter so as to determine whether the signal is an object signal or an interference signal. By using the method of the invention, an identification capability to the interference signal is high, and good robustness and realizability are possessed.

Description

Technical field [0001] The invention relates to the field of radar anti-interference, and in particular to an interference identification method based on radio spectrum pattern identification. Background technique [0002] In the radar field, when the interference signal and the target signal exist at the same time, two or more targets can be detected in the time domain or the frequency domain, but it is often impossible to determine which is the target signal and which is the interference after detection. signal. Summary of the invention [0003] The invention provides an interference identification method based on radio spectrum pattern identification, which has strong identification ability for interference signals, strong robustness and good realizability. [0004] In order to achieve the above objective, the present invention provides an interference identification method based on radio spectrum pattern identification, which includes the following steps: [0005] Step S1, throu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/021
Inventor 陆满君唐坤
Owner SHANGHAI RADIO EQUIP RES INST
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