Time-frequency image-based signal recognition by using improved CenterNet

Junhui Weng; Lei Yu; Hongna Zhu; Ye Jin; Le Cheng; Hao Sui; Zhilong Li; Jinli Zhang

doi:10.1117/12.2606533

1 November 2021 Time-frequency image-based signal recognition by using improved CenterNet

Junhui Weng, Lei Yu, Hongna Zhu, Ye Jin, Le Cheng, Hao Sui, Zhilong Li, Jinli Zhang

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120573H (2021) https://doi.org/10.1117/12.2606533
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

An improved CenterNet is proposed for signal recognition with time-frequency image input. The signal is transformed into time-frequency image by short-time Fourier transform, hence, the signal recognition is transformed into investigating the object detection problem in the field of image detection. Then, the advanced achievements of image detection are adopted to enhance the performance of signal recognition. Here, an improved CenterNet-based object detection network, which demonstrates great advantages in detection speed, is proposed. The results show that the proposed method identifies the signal modulation format with high speed. After training and testing on the self-collected data set with 6 types and 7800 samples, the mean average precision achieves 98.38% and the frame per second reaches 21.4. Compared with the original CenterNet, the detection speed increases more than 4 times while only reducing recognition accuracy by 0.3%, where this algorithm gives a promising way for applications of real-time signal recognition.

Citation Download Citation

Junhui Weng, Lei Yu, Hongna Zhu, Ye Jin, Le Cheng, Hao Sui, Zhilong Li, and Jinli Zhang "Time-frequency image-based signal recognition by using improved CenterNet", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120573H (1 November 2021); https://doi.org/10.1117/12.2606533

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Time-frequency analysis

Convolution

Signal detection

Signal processing

Feature extraction

Fourier transforms

Image fusion

Show All Keywords

Keywords/Phrases

Search In:

Publication Years