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Verification method for blind processing result of LFM/BPSK hybrid modulation signal

A technology of a mixed modulation signal and a verification method, applied in the field of signal processing, can solve the problem that the verification research of the blind processing result of the mixed modulation signal has not been published, and achieves the effect of improving reliability and effectiveness, and the method is simple and effective.

Active Publication Date: 2017-02-22
JINLING INST OF TECH
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Problems solved by technology

Most of the current related research focuses on the verification of the processing results of a single modulation signal, and the research on the verification of the blind processing results of mixed modulation signals has not yet been published.

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  • Verification method for blind processing result of LFM/BPSK hybrid modulation signal
  • Verification method for blind processing result of LFM/BPSK hybrid modulation signal
  • Verification method for blind processing result of LFM/BPSK hybrid modulation signal

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Embodiment Construction

[0036] The present invention is described in further detail now in conjunction with accompanying drawing.

[0037] The present invention first constructs a reference signal according to the signal model corresponding to the modulation recognition result, calculates the square correlation spectrum between the reference signal and the observed signal, takes the maximum value of each segment after appropriate segmentation to form a grouping extremum sequence, and then uses the KS method to The grouped extremum sequence is used for GEV distribution fitting test, and the result of single LFM / BPSK signal blind processing is verified.

[0038] figure 1 It shows the verification method flow of the blind processing result of the LEM / BPSK mixed modulation signal based on the GEV distribution fitting test, which specifically includes the following steps:

[0039] 1. Reference signal establishment:

[0040] Construct the LFM / BPSK mixed modulation signal model superimposed with Gaussian ...

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Abstract

Aiming at a blind processing result of an LFM (linear frequency modulation) / BPSK (Binary Phase Shift Keying) hybrid modulation signal, the invention proposes a verification method through GEV (generalized extreme value) distributed fitting verification. The method comprises the steps: constructing a reference signal at first according to a signal model corresponding to a modulation recognition result; calculating the square correlation spectrum of the reference signal and an observation signal, carrying out the appropriate segmenting, and then taking the maximum values of all segments to form grouped extreme value sequences; carrying out the GEV distributed fitting verification of the grouped extreme value sequences through employing an KS method, and carrying out the statistical judgment of the blind processing result of the LFM / BPSK signal. The simulation result of a computer indicates that the method can carry out the effective verification of the reliability of the blind processing result of the LFM / BPSK signal under the condition that there is short of signal and noise variance information.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a method for verifying blind processing results of LFM / BPSK (linear frequency modulation / binary phase shiftkeying) mixed modulation signals based on GEV (Generalized Extreme Value) distribution fitting test. Background technique [0002] In non-cooperative signal processing occasions (such as electronic reconnaissance, cognitive radio, etc.), due to the lack of prior information of the signal, the detection, modulation identification and parameter estimation in the front-end processing link can only be processed blindly. Obviously, the reliability of the processing results directly affects the performance of subsequent links (such as signal tracking, interference and spectrum management). Therefore, the verification of blind signal processing results is of great value in improving the effectiveness and reliability of the entire processing system, and has bec...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 胡国兵姜志鹏李岳衡吴珊珊陈正宇杨莉孙健
Owner JINLING INST OF TECH
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