TY - GEN
T1 - Coherent signal combination based on a highly stable fiber transmission system
AU - Wang, Xi
AU - Wei, Wei
AU - Xie, Weilin
AU - Dong, Yi
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - We present an ultra-stable wideband receiving system for distributed coherent signal combination. A 500 Mbps binary phase shift keying signal with a carrier frequency of 10 GHz is transmitted from two remote ends to the local end via two 20 km fiber links for combination. The transmission delay variation of the optical links has been detected and precisely compensated for by adopting a 27.4 GHz probe signal. Thanks to the highly stable transmission link with a stability better than 20 fs, the two signals have a relative delay variation of merely 1.95 ps. The signal-To-noise ratio of the combined signal is increased by 2.9 dB which is close to the theoretical value of 3 dB. The proposed wideband signal receiving and combination system can be widely used in distributed coherent radars and multi-Antenna interferometric detection.
AB - We present an ultra-stable wideband receiving system for distributed coherent signal combination. A 500 Mbps binary phase shift keying signal with a carrier frequency of 10 GHz is transmitted from two remote ends to the local end via two 20 km fiber links for combination. The transmission delay variation of the optical links has been detected and precisely compensated for by adopting a 27.4 GHz probe signal. Thanks to the highly stable transmission link with a stability better than 20 fs, the two signals have a relative delay variation of merely 1.95 ps. The signal-To-noise ratio of the combined signal is increased by 2.9 dB which is close to the theoretical value of 3 dB. The proposed wideband signal receiving and combination system can be widely used in distributed coherent radars and multi-Antenna interferometric detection.
KW - distributed detection
KW - stable wideband signal transfer
KW - wideband signal combination
UR - http://www.scopus.com/inward/record.url?scp=85185825004&partnerID=8YFLogxK
U2 - 10.1109/MWP58203.2023.10416563
DO - 10.1109/MWP58203.2023.10416563
M3 - Conference contribution
AN - SCOPUS:85185825004
T3 - 2023 International Topical Meeting on Microwave Photonics, MWP 2023 - Proceedings
BT - 2023 International Topical Meeting on Microwave Photonics, MWP 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 International Topical Meeting on Microwave Photonics, MWP 2023
Y2 - 15 October 2023 through 18 October 2023
ER -