中国空间站轨道大气密度原位实测值与业务模型的对比分析  

Comparative Analysis of In⁃situ Observed Value of Orbital Atmospheric Density of China Space Station and the Operational Models

作　　者：艾讲赵 李永平 郑晓亮 李佳 王玉洁 AI Jiangzhao;LI Yongping;ZHENG Xiaoiang;LI Jia;WANG Yujie(National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院国家空间科学中心,北京100190

出　　处：《载人航天》2024年第3期320-327,共8页Manned Spaceflight

基　　金：中国载人航天工程基金(Y59003AC40)。

摘　　要：为修正和建立空间站特有的大气经验模型,降低其预测误差,利用2022-2023年期间中国空间站大气密度原位实测值与业务模型值,包括NRLMSISE00模型、JB2008模型,对比分析3种数据集在不同空间环境下的响应差异。结果表明:NRLMSISE00模型值与实测值相当,日均值比实测值高出约3.4%,而JB2008模型日均值比实测值低27.4%,尤其在2023年夏季,实测值为JB2008模型值4~5倍;相比于JB2008模型,NRLMSISE00模型与实测值的相关性更强;3种数据集与太阳辐射指数的相关性R_(NRLMSISE00)≈R_(Observed)>R_(JB2008),而不同太阳辐射指数的相关性R_(S10)>R_(Y10)>R_(M10)>R_(F10);对于不同等级地磁活动的响应,平静期间NRLMSISE00模型值相对于原位实测值差异主要集中在太阳日照区域,最大差约为16%,JB2008模型值在太阳日照区域比实测值低约25%,在太阳阴影区域低至40%;在中强磁暴期间,NRLMSISE00模型值相对原位实测值的差异能达到50%,JB2008模型值在日侧赤道区域、在阴影区比实测值分别高30%、低60%,表明JB2008模型在中强磁暴期间的地方时响应存在明显差异。综合分析比较结果,在空间站轨道高度NRLMSISE00模型优于JB2008模型。分析结果可为业务模型的修正和使用奠定研究基础。In order to correct and establish the unique atmospheric empirical model of the China Space Station(CSS)and reduce its prediction error to provide data support,the in-situ observed values of atmospheric density of the CSS and the operational model(including the NRLMSISE00 model and the JB2008 model)values from 2022 to 2023 were used to compare and analyze the re-sponse differences of the three datasets in different space environments.The analysis results show that the NRLMSISE00 model value is comparable to the measured value,and its daily average value is about 3.4%higher than the observed value,while the daily average value of the JB2008 model is 27.4%lower than the observed value,especially in the summer of 2023,the observed value is 4~5 times that of the JB2008 model value.Compared with the JB2008 model,the correlation between the NRLMSISE00 model and the observed values is stronger.In terms of solar radiation response,the correlation between the three datasets and solar radiation index is R_(NRLMSISE00)≈R_(Observed)>R_(JB2008),while the correlation between different solar radiation indices is R_(S10)>R_(Y10)>R_(M10)>R_(F10) from strong to weak.In terms of the density response at different geomagnetic levels,the difference between the NRLMSISE00 model value and the in-situ observed value during the quiet period is mainly concen-trated on the dayside,with a maximum of about 16%,and the JB2008 model value is about 25%lower than the observed value on the dayside,especially on the nightside,which can be as low as 40%.During the moderate and strong magnetic storm,the difference between the NRLMSISE00 model value and the observed value can reach 50%,and the JB2008 model value is 30%higher and 60%lower than the observed value on the dayside-equatorial region and nightside,respectively,in-dicating that there is a significant difference in the response of the JB2008 model during the moder-ate and strong magnetic storm.The results of comprehensive analysis and comparison show that NR-LMSISE00 model is better than JB2

关 键 词：中国空间站 大气密度 NRLMSISE00模型 JB2008模型 空间环境 

分 类 号：V419.4[航空宇航科学与技术—航空宇航推进理论与工程] P412[天文地球—大气科学及气象学]