학술논문

Signal Reconstruction Using Bi-LSTM for Automotive Radar Interference Mitigation
Document Type
Conference
Source
2021 18th European Radar Conference (EuRAD) European Radar Conference (EuRAD), 2021 18th. :74-77 Apr, 2022
Subject
Aerospace
Communication, Networking and Broadcast Technologies
Fields, Waves and Electromagnetics
Deep learning
Interference
Predictive models
Signal reconstruction
Real-time systems
Radar signal processing
Radar applications
FMCW radar
Interference suppression
Recurrent neural networks
Language
Abstract
Automotive radar has emerged as an important sensor for environmental perception in modern vehicles. A rapid increase in the number of radars present in traffic operating at unregulated frequencies has given rise to a mutual interference problem. In order for radar-based systems to function reliably, such interference must be mitigated. In this paper, this problem is addressed with a bidirectional long short-term memory (Bi-LSTM) network as a deep learning approach. Using the Bi-LSTM network, we reconstruct the intermediate frequency (IF) signal and recover samples lost to interference. The proposed signal reconstruction method is evaluated via real measurement data. The proposed Bi-LSTM network provides a better performance than an autoregressive model-based signal reconstruction method.