海洋一号C/D卫星全球船舶自动识别系统设计与应用  

Design and Application of AIS on HY-1C/D Satellite

作　　者：张可立[1] 丁振宇 高杰[1] ZHANG Keli;DING Zhenyu;GAO Jie(DFH Satellite Co.,Ltd.,Beijing 100094,China)

机构地区：[1]航天东方红卫星有限公司

出　　处：《航天器工程》2019年第5期26-31,共6页Spacecraft Engineering

摘　　要：为了满足用户对全球船只信息的监测需求,海洋一号C/D(HY-1C/D)卫星配置了船舶自动识别系统(AIS),实现了单星针对全球大洋船只每天2次信息采集和监测能力。由于AIS接收机工作频率低,接收灵敏度高,容易受外部低频信号的干扰,影响包括解调概率和观测幅宽在内的工作性能。而作为光学卫星,HY-1C/D搭载了多台光学载荷,无法进行整星包覆控制。为了解决AIS在轨应用易受低频信号干扰问题,提出了重点单机电磁屏蔽、AIS天线方向图和安装位置优化设计、整星电磁兼容综合处理等解决方法,并在卫星的地面试验中得到了验证。卫星入轨工作后,AIS接收机获取的全球船舶识别信息进一步验证了上述方法的有效性。结合目前在轨使用情况,给出了后续AIS载荷在设计和应用上的建议。In order to meet the demand of global ship monitoring,the automatic identification system(AIS)is equipped on the HY-1C/D satellite realizing for each satellite to monitor and acquire information of global ocean ships twice a day.Since the AIS receiver works in low frequency with a high sensitivity,it is vulnerable to external signals in low frequency,which would deteriorate its performance such as demodulation probability and observation swath.On the other hand,as an optical satellite,HY-1C/D carries several optical payloads,and it is impossible to wrap the whole satellite with electromagnetic shielding material.Therefore,in order to solve the problem of low frequency interference to AIS,this paper proposes methodologies including important equipment electromagnetic shielding,the optimization of AIS antenna pattern and mounting position design,and electromagnetic compatibility(EMC)implementation on the satellite level.The methodologies are already validated by the ground experiment.After the successful launch of the satellite,the global ship identification information acquired by AIS furthermore proves all the methods mentioned above.Meanwhile,combined with current in-orbit application status,this paper brings about advice on the design and application of future spaceborne AIS receiver payloads.

关 键 词：海洋一号C/D卫星 船舶自动识别系统 电磁兼容 低频干扰 

分 类 号：V443[航空宇航科学与技术—飞行器设计]