中国射电天文频率保护进展  

Protection Progress on Radio Astronomy Frequencies in China

作　　者：张海燕[1,2] ZHANG Hai-yan(National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China)

机构地区：[1]中国科学院国家天文台,北京100012 [2]中国科学院射电天文重点实验室,南京210008

出　　处：《天文学进展》2017年第4期473-480,共8页Progress In Astronomy

基　　金：国家自然科学基金(11473043);天文专项(2015-2016)

摘　　要：由于所观测的宇宙信号非常微弱,射电天文极易受到有源业务的干扰。有限的频谱资源和中国观测台站无线电环境的日趋恶化,制约了中国射电天文研究的可持续发展。为保护射电天文观测频率,广泛调研国际电信联盟的相关规则和建议书;结合实测,分析中国现有和规划中的台站无线电环境情况,开发适用的无线电干扰监测系统。对于中国部分现有和新建的大型射电天文设备,通过与各级主管部门协商,在台址周边设立无线电宁静区,从而为射电天文观测的顺利开展提供了重要的无线电频谱保障。Due to the weakness of cosmic radio signal measured,radio astronomy is very vulnerable to radio frequency interference(RFI)from active services.According to the limitation of spectrum resource and increasing deterioration of radio environment around the site of radio telescope,the continuous development of domestic radio astronomy has been affected.Based on the study on International Telecommunication Union(ITU)Radio Regulation and RFI measurements at radio astronomical stations,the RFI situation of the local radio environment around the stations has been analyzed.Moreover,the RFI measurement system has also been developed.For several radio telescopes,especially large radio telescope,the radio quiet zones have been established,which enables the protection of the astronomical observation from RFI and assure the scientific output of the telescopes.

关 键 词：射电天文业务 无线电干扰 无线电宁静区 

分 类 号：P16[天文地球—天文学]