Photon-counting chirped amplitude modulation lidar system using superconducting nanowire single-photon detector at 1550-nm wavelength
Zhou Hui1, 3, He Yu-Hao1, Lü Chao-Lin1, You Li-Xing1, 3, †, Li Zhao-Hui2, Wu Guang2, Zhang Wei-Jun1, Zhang Lu1, Liu Xiao-Yu1, Yang Xiao-Yan1, Wang Zhen1
       

(color online) SNR of the IF signal and the distance accuracy as a function of the modulation bandwidth with different modulation periods.