التفاصيل البيبلوغرافية
| العنوان: |
Radar signals modulation recognition based on bispectrum feature processing |
| المؤلفون: |
Mi, Xinping, Chen, Xihong, Liu, Qiang, Hu, Denghua |
| المصدر: |
Journal of Physics: Conference Series ; volume 1971, issue 1, page 012099 ; ISSN 1742-6588 1742-6596 |
| بيانات النشر: |
IOP Publishing |
| سنة النشر: |
2021 |
| الوصف: |
Modulation recognition of radar signals is an important part of modern electronic intelligence reconnaissance and electronic support systems. In this paper, to solve the problem of low recognition accuracy and low noise resistance of radar signals under low signal-to-noise ratio(SNR), a recognition method based on variational mode decomposition(VMD) and bispectrum feature extraction is proposed. Based on the feature that bispectrum can suppress Gaussian noise, the feasibility of signals modulation recognition under low SNR is analyzed and the noise item is introduced. Due to the interference of noise item, the noise suppression effect of bispectrum is worse under 0dB. An improved VMD algorithm based on artificial bee colony(ABC) algorithm optimization and envelope entropy evaluation is proposed to preprocess the signal to improve the SNR. Finally, we designed a convolution neural network(CNN) classifier to recognize signals of different modulation types. The simulation results show that this method has better noise resistance than traditional methods, and can effectively identify different types of signals under low SNR. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| DOI: |
10.1088/1742-6596/1971/1/012099 |
| DOI: |
10.1088/1742-6596/1971/1/012099/pdf |
| الإتاحة: |
https://doi.org/10.1088/1742-6596/1971/1/012099Test |
| حقوق: |
http://creativecommons.org/licenses/by/3.0Test/ ; https://iopscience.iop.org/info/page/text-and-data-miningTest |
| رقم الانضمام: |
edsbas.BC4FA9B2 |
| قاعدة البيانات: |
BASE |
