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      Progress of Cosmic Dawn global spectrum experiments
      WU Fengquan, XU Jiaqin, ZHU Jiacong, ZHANG Cong, HE Kai, SUN Shijie, ZHOU Jia, ZHOU Minquan, XU Shenzhe, ZHOU Wei, ZHANG Haoran, YAN Qisen, YAN Ruibin, LI Jixia, DENG Furen, LU Yujie, SUO Nanben, ZHANG Jiao, ZHANG Juyong, CHEN Xuelei
      2024, 39(4): 589-594. DOI: 10.12265/j.cjors.2024073
      Abstract PDF
      Progress in the protection of radio quiet sky
      ZHANG Haiyan
      2024, 39(4): 595-601. DOI: 10.12265/j.cjors.2024065
      Abstract PDF
      Review on electromagnetic interference from PMT base stations and frequency-used protection methods for the FAST
      WANG Jian, ZHAO Yibo, YANG Cheng, HAO Yulong, SHI Yafei, ZHANG Haiyan, SUN Jianmin, LUO Dingling
      2024, 39(4): 602-623. DOI: 10.12265/j.cjors.2024078
      Abstract PDF
      The periodic RFI statistical method for broadband spectrum in radio astronomy interference monitoring
      DONG Xiaoyu, MA Ling, LIU Qi, DU Qingqing, CAI Minghui, SU Xiaoming
      2024, 39(4): 624-630. DOI: 10.12265/j.cjors.2024061
      Abstract PDF
      High elevation satellite interference source localization based on joint time-frequency difference analysis
      ZHU Kehui, DONG Liang, LI Jianfeng
      2024, 39(4): 631-639, 657. DOI: 10.12265/j.cjors.2024072
      Abstract PDF
      Research on configuration strategy of multi-scenario shielding effectiveness measurement for large radio telescope projects
      TANG Renkai, LI Rong, LIU Qi, SU Xiaoming, ZHENG Xianze, CAI Minghui
      2024, 39(4): 640-649. DOI: 10.12265/j.cjors.2024070
      Abstract PDF
      Microsecond-level radio frequency signal detection system for radio astronomy
      MA Ling, LIU Qi, CAI Minghui, DONG Xiaoyu, WANG Na, SU Xiaoming
      2024, 39(4): 650-657. DOI: 10.12265/j.cjors.2024056
      Abstract PDF
      Applicability of ITU-R P.2001 recommendation in the FAST radio quiet zone
      WU Zhongle, ZHAO Yibo, YANG Cheng, SHI Yafei, HAO Yulong, SUN Jianmin, WANG Jian
      2024, 39(4): 658-664. DOI: 10.12265/j.cjors.2024043
      Abstract PDF
      Research and realization of satellite radio frequency interference monitoring technology for FAST
      WANG Yu, HUANG Shijie, HU Hao, ZHANG Haiyan
      2024, 39(4): 665-672, 768. DOI: 10.12265/j.cjors.2024052
      Abstract PDF
      Research on electromagnetic environment before and after the operation of the FAST
      YANG Cheng, HAO Yulong, LIU Wenlu, SHI Yafei, SUN Jianmin, WANG Jian
      2024, 39(4): 673-682. DOI: 10.12265/j.cjors.2024106
      Abstract PDF
      RFI environmental measurement and analysis of the radio telescope array at Guizhou Normal University
      WANG Xueping, LIU Hui, PAN Yunrong, ZHAO Rushuang
      2024, 39(4): 683-697. DOI: 10.12265/j.cjors.2023350
      Abstract PDF
      Electromagnetic environment monitoring and analysis of the candidate site for the large array radio telescope
      ZHOU Yinghui, LI Jianbin, GAO Yang, WANG Rui, ZHU Xinyu, YU Jinglong, LIU Hongfei
      2024, 39(4): 698-705. DOI: 10.12265/j.cjors.2024039
      Abstract PDF
      Analysis of electromagnetic compatibility of interference around radio astronomical observatory sites
      CAI Minghui, MA Ling, DONG XiaoYu, LIU Qi, SU Xiaoming, WANG Na, DANG Zhenwei
      2024, 39(4): 706-714. DOI: 10.12265/j.cjors.2024025
      Abstract PDF
      A method of high precision amplitude control method based on 2 bit step-wave time-modulation
      CHEN Junxin, GAO Yanchang, ZHENG Haowei, CHEN Jingfeng, JIN Ronghong, LIANG Xianling
      2024, 39(4): 715-721. DOI: 10.12265/j.cjors.2023230
      Abstract PDF
      The optimization of beamforming and trajectory for reconfigurable intelligent surface assisted UAV communication system based on deep reinforcement learning
      WAN Shiqing, ZHONG Weizhi, HE Yi, JIN Haowen, LIU Xiang, ZHU Qiuming, LIN Zhipeng
      2024, 39(4): 722-731. DOI: 10.12265/j.cjors.2023233
      Abstract PDF
      A compact low-coupling ultra-wideband MIMO antenna design
      NAN Jingchang, ZHAO Longyou, GAO Mingming, LU Zheng, SU Dongrui
      2024, 39(4): 732-740. DOI: 10.12265/j.cjors.2023229
      Abstract PDF
      Design and verification of a communication system based on UAV with airborne reconfigurable intelligent surface
      ZHANG Xinyu, KONG Xiangkun, LIU Ziqing, GAO Shiqi, WANG Xiaopeng, QI Nan
      2024, 39(4): 741-747. DOI: 10.12265/j.cjors.2023242
      Abstract PDF
      Wireless channel modeling and capacity analysis of vacuum tube flying train based on propagation graph theory
      DUAN Xianglong, LIU Liu, ZHOU Tao, WANG Kai, LIU Meilu
      2024, 39(4): 748-759. DOI: 10.12265/j.cjors.2023231
      Abstract PDF
      Time delay estimation of partial discharge based on dual EEMD and reconstruction
      LI Mingjie, CHEN Dongwei, WANG Tong, LIU Jinchao, LIU Weidong
      2024, 39(4): 760-768. DOI: 10.12265/j.cjors.2023223
      Abstract PDF
      Design of compact semi-lumped mixed bandpass filter with wide stopband for 5G application
      WANG Litian, WANG Zhi, QIAN Lirong, LI Cuiping, XIONG Yang, LI Dan, HE Ming, YU Baohua, TIAN Yahui, LI Honglang
      2024, 39(4): 769-776. DOI: 10.12265/j.cjors.2023221
      Abstract PDF
      Modeling of the regional ionosphere in China based on the combined CMONOC and IGS GPS data
      XU Peng, ZHU Fuying
      2024, 39(4): 777-784. DOI: 10.12265/j.cjors.2023007
      Abstract PDF