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高能辐射环境
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The first set of data collected by the energetic particle detectors on board of the ZY-1, a China Brasilia coordinated earth resource satellite,were introduced briefly in this paper.ZY-1 is a polar orbiting satellite at an altitude of 780?km and launched on 14 th October 1999.This is the first time that such measurement is carried out inside a satellite cabin.For the purpose of statistics,a consecutive set(around at least 3 to 5 times) of distinguishable records of electrons or protons was defined as a particle...

The first set of data collected by the energetic particle detectors on board of the ZY-1, a China Brasilia coordinated earth resource satellite,were introduced briefly in this paper.ZY-1 is a polar orbiting satellite at an altitude of 780?km and launched on 14 th October 1999.This is the first time that such measurement is carried out inside a satellite cabin.For the purpose of statistics,a consecutive set(around at least 3 to 5 times) of distinguishable records of electrons or protons was defined as a particle event.The preliminary analysis shows that almost all of the events recorded are located at polar and South Atlantic regions (SAA).In the northern polar region,at the same longitudes of SAA,there is a clear gap of occurrence of flux events. Proton events in general only occur in SAA region while electron events appear at both SAA and polar regions.Electron flux of 0 5~2 0?MeV in polar regions is dominant over that of 2~15?MeV,while at SAA,fluxes from the two channels are about the same.There is a close correlation between energetic particle radiation inside and outside the satellite.

对搭载于我国第一颗地球资源卫星上的“星内高能粒子探测器”首批资料进行初步分析表明 ,在卫星 780km轨道高度上所纪录到的所有高能粒子通量事件都只出现在 3个地理区域 ,即两半球的高纬极光带和南大西洋地磁异常区。低能档电子在这 3个区域都有出现 ,而高能档电子和质子在太阳宁静条件下 ,一般只出现在南大西洋异常区。从统计结果还可看出 ,南极光带附近的粒子通量大于北半球极光带 ,而在北极光带 ,与南大西洋异常区大体相同的经度附近 ,高能粒子的通量事件有一个明显的空隙区域。另一个观测事实是 ,0 5~ 2 0MeV能档的电子通量在极光区远大于 2 0MeV以上能档的电子通量 ,而在南大西洋地磁异常区 ,两个通道的电子通量差别不大。与现有理论模型和国外大致相同轨道上的空间高能辐射环境直接观测资料对比还表明 ,卫星舱内的辐射与舱外的空间辐射环境是完全相关的 ,积累的有关资料不但是航天设计和环境应用研究所需的重要参量之一 ,也是空间物理基础研究特别是辐射带研究的重要数据

Space environment support plays a major role in safeguarding manned space flight and saving the lives of the astronauts. An overview is given about the space environment support for the SZ-5 spacecraft which the Space Environment Prediction Center provided. These included forecast and analysis of the space environment effects on SZ-5 in four aspects: upper atmosphere, high-energy particle radiation, meteoroids and debris, and important space weather events.

空间环境安全保障是载人航天器飞行安全和航天员生命安全保障的一个重要部分 .文章从高层大气、高能辐射环境、流星体空间碎片和重大空间环境扰动事件等四个方面空间环境要素对载人航天的影响 ,介绍了空间环境预报中心为“神舟”五号载人飞行任务所作的空间环境保障工作

 
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