Home / Archives / Vol. 40 No. 2 (2021) Vol. 40 No. 2 (2021) Published: 2021-02-01 Articles A device for generating composite target source based on beat frequency modulation technology Jia Qingsong; Shen Tao; Liu Mingna; Zhou Guanguan; Qiu Wei; Ling Xiangbin 1-5 Requires Subscription PDF Optimal design of a multi-wavelength absorber in infrared band Zhao Hongxia 6-11 Requires Subscription PDF A Binocular Vision Ranging Method Based on Improved ORB Algorithm Song Chaoqun;Xu Sixiang;Yang Yu;Hua Mengqi 12-19 Requires Subscription PDF Research on a robot wrist denticle recognition method based on fusion features Niu Min 20-25 Requires Subscription PDF Blind color image quality assessment based on QDCT and Bayesian spectral entropy Zhou Ke;Wu Chengmao;Li Changxing 26-34 Requires Subscription PDF