The article describes that data collection subsystem uplink is interfered during CBERS-2B satellite electromagnetic compatibility test. A series of electromagnetic compatibility measures are carried out.It proved that two star sensors conduct emission and HR camera & WFI camera data transmission radiation emission are weakened during AIT test in all normal working modes (real time imaging and playback mode), so that the data collection subsystem uplink interference is reduced from 15dB to 4dB, and data collection subsystem interference is controlled well. The test proved electromagnetic compatibility measures are available and reasonable. By carrying out these measures, data collection subsystem, attitude and orbit control subsystem as well as HR camera & WFI camera data transmit subsystems are of electromagnetic compatibility.%数据采集分系统上行链路在整星EMC试验中受到干扰,文章描述了为抗干扰采取的屏蔽、隔离等相关措施.结果表明:姿态与轨道控制分系统两台星敏感器对外传导发射干扰和HW数传分系统编码器对外辐射发射干扰均已减弱,并且改善了数据收集分系统工作的电磁环境,从而使其上行链路干扰从15dB减少到4dB,证实所采取的EMC抗干扰措施有效,数据收集分系统、姿态与轨道控制分系统和HW数传分系统之间是电磁兼容的.
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