TY - GEN
T1 - Photonics-Assisted Joint Digital and Analog Self-Interference Cancellation and De-Chirping for Frequency-Modulated Continuous-Wave Radars
AU - Zhang, Sunan
AU - Huang, Yong
AU - Chen, Yang
AU - Jiang, Lizhong
AU - Han, Moxuan
AU - Liu, Qingbo
AU - Shi, Taixia
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - A photonics-assisted joint digital and analog self-interference cancellation and de-chirping method for frequency-modulated continuous-wave radar systems is proposed based on a dual-parallel Mach-Zehnder modulator (DP-MZM). The received signal, including both the echo signal reflected by the target and the self-interferences, is sent to one RF port of the upper dual-drive Mach-Zehnder modulator (DD-MZM) in the DP-MZM. The reference signal used for self-interference cancellation is constructed in the digital domain via digital signal processing, which is sent to the other RF port of the upper DD-MZM. Another reference signal for de-chirping is applied to one RF port of the lower DD-MZM in the DP-MZM. After the optical signals are detected in a photodetector, the de-chirped signal with self-interference suppressed can be obtained. An experiment is performed, in which the self-interference with a bandwidth of 4 GHz can be suppressed by around 20 dB after de-chirping.
AB - A photonics-assisted joint digital and analog self-interference cancellation and de-chirping method for frequency-modulated continuous-wave radar systems is proposed based on a dual-parallel Mach-Zehnder modulator (DP-MZM). The received signal, including both the echo signal reflected by the target and the self-interferences, is sent to one RF port of the upper dual-drive Mach-Zehnder modulator (DD-MZM) in the DP-MZM. The reference signal used for self-interference cancellation is constructed in the digital domain via digital signal processing, which is sent to the other RF port of the upper DD-MZM. Another reference signal for de-chirping is applied to one RF port of the lower DD-MZM in the DP-MZM. After the optical signals are detected in a photodetector, the de-chirped signal with self-interference suppressed can be obtained. An experiment is performed, in which the self-interference with a bandwidth of 4 GHz can be suppressed by around 20 dB after de-chirping.
KW - de-chirping
KW - frequency-modulated continuous-wave radar
KW - microwave photonics
KW - self-interference cancellation
UR - https://www.scopus.com/pages/publications/85145576414
U2 - 10.1109/CISS57580.2022.9971221
DO - 10.1109/CISS57580.2022.9971221
M3 - 会议稿件
AN - SCOPUS:85145576414
T3 - 3rd China International SAR Symposium, CISS 2022
BT - 3rd China International SAR Symposium, CISS 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd China International SAR Symposium, CISS 2022
Y2 - 2 November 2022 through 4 November 2022
ER -