TY - GEN
T1 - A Novel Imaging Formation Method for Electromagnetic Vortex SAR Based on Orbital-Angular-Momentum
AU - Fang, Yue
AU - Wang, Pengbo
AU - Chen, Jie
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11/28
Y1 - 2018/11/28
N2 - Recently, electromagnetic (EM) vortex wave carrying orbital angular momentum (OAM) attracts more attentions in radar imaging, due to its ability of infinite degree of information modulation and realization of azimuth resolution without relative motion. Most of current research focuses on the staring imaging mode, where the radar is static relative to the targets and abundant OAM modes control is indispensable. Acquiring a high azimuth resolution image depends on massive OAM conversion, which brings stricter requirements for radar antenna. In this paper, a novel imaging algorithm of electromagnetic vortex synthetic aperture radar based on the Chirp-Scaling algorithm is proposed, where the radar is moving and OAM mode is constant. The introduction of moving radar leads to the update of geometry model and challenge of imaging formation. The SAR geometry model is adopted for EM vortex with OAM and the echo signal model is deduced simultaneously. Then the imaging algorithm of EM vortex-SAR is proposed. Software simulation and comprehensive numerical simulations validate the effectiveness of the proposed algorithm, which is beneficial for the further information-rich radar and radar target imaging.
AB - Recently, electromagnetic (EM) vortex wave carrying orbital angular momentum (OAM) attracts more attentions in radar imaging, due to its ability of infinite degree of information modulation and realization of azimuth resolution without relative motion. Most of current research focuses on the staring imaging mode, where the radar is static relative to the targets and abundant OAM modes control is indispensable. Acquiring a high azimuth resolution image depends on massive OAM conversion, which brings stricter requirements for radar antenna. In this paper, a novel imaging algorithm of electromagnetic vortex synthetic aperture radar based on the Chirp-Scaling algorithm is proposed, where the radar is moving and OAM mode is constant. The introduction of moving radar leads to the update of geometry model and challenge of imaging formation. The SAR geometry model is adopted for EM vortex with OAM and the echo signal model is deduced simultaneously. Then the imaging algorithm of EM vortex-SAR is proposed. Software simulation and comprehensive numerical simulations validate the effectiveness of the proposed algorithm, which is beneficial for the further information-rich radar and radar target imaging.
KW - Chirp-Scaling (CS) algorithm
KW - Orbital angular momentum(OAM)
KW - electromagnetic (EM) vortex
KW - synthetic aperture radar (SAR)
UR - https://www.scopus.com/pages/publications/85060034808
U2 - 10.1109/SARS.2018.8551998
DO - 10.1109/SARS.2018.8551998
M3 - 会议稿件
AN - SCOPUS:85060034808
T3 - 2018 China International SAR Symposium, CISS 2018 - Proceedings
BT - 2018 China International SAR Symposium, CISS 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 China International SAR Symposium, CISS 2018
Y2 - 10 October 2018 through 12 October 2018
ER -