共查询到18条相似文献,搜索用时 218 毫秒
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月球表面没有磁场的保护,粒子辐射是人类在月球活动的重要风险要素。概述了月球的辐射环境以及辐射来源,并介绍了月球探测的现状,特别提及了近年来几个较为典型的月球辐射探测实例及其探测结果;介绍了我国“嫦娥4号”上搭载的月表中子与辐射剂量探测仪(Lunar Lander Neutron&Dosimetry,LND)的科学目标及其技术指标。LND的科学目标主要包括:载人登月辐射剂量的测量、月球南极艾特肯盆地水含量的测量、艾特肯盆地FeO含量的测量,以及为日球层科学的研究提供依据。 相似文献
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准确的月球表面温度分布模型对于开展月球探测具有重要意义. 目前有关月球表面温 度模型还缺乏对完整月球表面温度分布的计算方法研究. 本文建立了一套计算完整月球表面温度的方法, 其中月球阳面温度采用Racca模型直接计算得到; 对于月球阴面, 将其沿纬度方向划分为若干区域, 每个区域的地表土壤采用一维非稳态热传导模型, 根据嫦娥三号着陆器太阳电池阵在轨环月阶段的温度数据, 修正得到月球表面土壤导热系数、密度及比热容, 通过数值计算求解一维非稳态热传导方程, 得出任意时刻月球阴面表面温度随时间的变化. 嫦娥三号着陆器太阳电池阵环月阶段热分析结果与在轨温度符合较好, 初步说明本文建立的完整月球表面温度计算方法正确可行. 基于本文方法计算得到整个月球表面温度分布, 进一步研究了极月轨道太阳电池阵外热流变化规律. 相似文献
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9月中旬,我国第二颗月球探测卫星嫦娥二号成功从172万千米外深空,传回第一批科学探测数据。这些数据是嫦娥二号从月球飞往日地拉格朗日L2点过程中,太阳风离子探测器、太阳高能粒子探测器、γ射线谱仪等三种有效载荷开机,所获取的空间环境探测数据。根据工程总体安排,将于近日择机再次开启 相似文献
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基于嫦娥一号高能粒子数据的地球磁层屏蔽效应研究 总被引:1,自引:0,他引:1
月球绕地球运行轨道约有1/4位于地球磁层内,因此,地球磁层是否会为月球轨道附近高能粒子提供足够的磁场屏蔽对于探索月球活动具有重要影响.嫦娥一号是中国首颗绕月人造卫星,其绕月飞行的工作轨道距离月球表面200 km.通过对嫦娥一号高能粒子探测器(HPD)的探测数据进行分析,比较了当月球位于地球磁层内外6个不同能道(能量范围4~400 MeV)时质子通量的变化,发现当月球位于地球磁层内时,这些能道的质子通量并没有发生显著减少,结果表明地球磁层不能为月球轨道附近高能粒子提供显著的磁屏蔽. 相似文献
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月球表面的辐射剂量是影响航天员安全和月表驻留时间的重要参数,通过对月表的粒子辐射测量可以为航天员的辐射安全防护提供重要依据.利用嫦娥四号着陆器上搭载的月表中子与辐射剂量探测仪二年的观测数据得到:月表粒子辐射在硅中的平均总吸收剂量率为12.66±0.45μGy·h-1,中性粒子吸收剂量率为2.67±0.16μGy·h-1.辐射剂量率随时间出现缓慢的下降,LET谱的变化则很小.同时观测到了2020年12月太阳活动末期由于银河宇宙线福布斯下降导致的辐射剂量率降低. 相似文献
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China's Chang'E-4 probe successfully landed on 3 January 2019 in Von Kármán crater within the South Pole-Aitken (SPA) basin on the lunar far side. Based on the data acquired by the scientific payloads onboard the lander and the rover, the researchers obtained the related information such as the geologic and tectonic setting of the landing area, compositional characteristics of the landing surface materials, dielectric permittivity and density of the lunar soil. The experiments confirmed the existence of materials dominated by olivine and low-calcium pyroxene in the SPA basin on the lunar far side, which preliminary revealed the geological evolution history of the SPA basin and even that of the early time lunar crust, as well as the tectonic setting and formation mechanism of the materials in the lunar interior. The researchers also inves-tigated the particle radiation, Linear Energy Transaction (LET) spectrum, and so forth on the lunar surface. The low-frequency radio observations were carried out on the lunar far side for the first time as well. This article summarizes the latest scientific results in the past years, focusing on the Chang'E-4 mission. Key words CLEP, Chang'E-4, Scientific objectives, Scientific payloads, Scientific results 相似文献
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Preliminary Scientific Results of Chang'E-1 Lunar Orbiter: Based on Payloads Detection Data in the First Phase 总被引:1,自引:0,他引:1
OUYANG Ziyuan JIANG Jingshan LI Chunlai SUN Huixian ZOU Yongliao LIU Jianzhong LIU Jianjun ZHAO Baochang REN Xin YANG Jianfeng ZHANG Wenxi WANG Jianyu MOU Lingli CHANG Jin ZHANG Liyan WANG Huanyu LI Yongquan ZHANG Xiaohui ZHENG Yongchun WANG Shijin BIAN Wei 《空间科学学报》2008,28(5)
Chang'E-1 lunar Orbiter was launched by Long March 3A rocket from Xichang Satel-lite Launch Center at 18:05BT(Beijing Time) Oct.24,2007.It is the first step of its ambitious three-stage moon program,a new milestone in the Chinese space exploration history.The primary science objectives of Chang'E-1 lunar orbiter are to obtain three-Dimension(3D) stereo images of the lunar surface,to analyze the distribution and abundance of elements on the surface,to investigate the thickness of lunar soil,evaluate helium-3 resources and other characteristics,and to detect the space environment around the moon.To achieve the above four mission objectives,eight sets of scientific instruments are chosen as the payloads of the lunar orbiter,including a CCD stereo camera(CCD),a Sagnac-based interferometer spectrometer(ⅡM),a Laser Altimeter(LAM),a Microwave Radiometer(MRM),a Gamma-Ray Spectrometer(GRS),an X-ray spectrometer(XRS),a High-Energy Particle Detector(HPD),and two Solar Wind Ion Detectors(SWID).The detected data of the payloads show that all payloads work well.This paper introduces the status of payloads in the first phase and preliminary scientific results. 相似文献
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Chang'E-1 and Chang'E-2 of China's Lunar Exploration Program (CLEP) have successfully achieved their mission. At the present time, only Chang'E-3 is still in operation, which was successfully launched on December 2, 2013. Chang'E-3 probe is the third robotic lunar mission of CLEP, which consists of a lander and a rover, with eight payloads on board the spacecraft. Up to December 21, 2015, more than 2.86TB raw data were received from these instruments onboard Chang'E-3 probe. A series of research results have been achieved. This paper gives a detailed introduction to the new scientific results obtained from Chang'E-3 missions. 相似文献
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嫦娥三号巡视器是中国首个地外天体表面巡视探测器, 其制导、导航及控制 (GNC)技术与地球卫星等航天器完全不同. 探测器实现月表巡视探测需要在地 外天体表面确定自身位置、航向及姿态, 识别周围地形环境并寻找安全路径, 控制巡视器沿规划路径安全行驶等. 本文针对嫦娥三号巡视器月面巡视对GNC系统的 任务要求及工作性能, 对月面自主导航定姿定位、协调运动控制、环境感知、 路径规划、激光探测避障以及地面试验等重要技术环节进行了分析, 研究月面制 导、导航与控制特性并进行实验验证, 进而对巡视器GNC技术进行了模拟仿真. 相似文献
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SUN Huixian WU Ji DAI Shuwu ZHAO Baochang SHU Rong CHANG Jin WANG Huanyu ZHANG Xiaohui REN Qiongying CHEN Xiaomin OUYANG Ziyuan ZOU Yongliao 《空间科学学报》2008,28(5)
Chang'E-1,the orbiter circling the moon 200km above the moon surface,is the first Chinese Lunar exploration satellite.The satellite was successfully launched on 24th October 2007.There are 8 kinds of scientific payloads onboard,including the stereo camera,the laser altimeter,the Sagnac-based interferometer image spectrometer,the Gamma ray spectrometer,the X-ray spectrom-eter,the microwave radiometer,the high energy particle detector,the solar wind plasma detector and a supporting payload data management system.Chang'E-1 opened her eyes to look at the moon and took the first batch of lunar pictures after her stereo camera was switched on in 20th November 2007.Henceforth all the instruments are successfully switched on one by one.After a period of parameter adjustment and initial check out,all scientific instruments are now in their normal operating phase.In this paper,the payloads and the initial observation results are introduced. 相似文献