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When was the first man - made satellite orbited ? 第一颗人造卫星是何时射入轨道的?
The simulation of satellite orbit magnetic field produced by two pairs of Helmholtz coils is studied. 报道利用两对赫姆霍兹线圈模拟卫星的磁环境的研究。
When was the first man-made satellite orbited? 第一颗人造卫星是何时射入轨道的?
Closer to home, the arrar, helps confirm satellite orbit locations for the Global Positioning System, or GPS and aids in earthquake research. 由于该阵列精确，因此，可帮助确定全球定位系统(gps)的卫星轨道位置，帮助研究地震。
With the simultaneously generated precision series, the response of ionospheric phase delay to the LEO satellite orbit biases is assessed and analyzed. 以同步生成的模拟精度序列为参照,就掩星观测中电离层延迟对LEO卫星轨道误差的响应程度进行了估计和分析。
The impact of satellite orbit parameters on the number and distribution of occultation events are discussed based on simulation. 而这些参数对一年掩星事件的经度分布影响都不大；
A set of recursive formula of the function of inclination of the satellite orbit isbased Yanghui's formula of the binomial coefficients introduced. 本文应用杨辉二项式系数公式导出人造卫星轨道倾角函数的一组集约化的递推公式。
The purpose of DGPS is to reduce the effect of GPS satellite orbit errors, clock errors, and the atmospheric delays from ionosphere and troposphere. 其目的在减低GPS卫星轨道及时间误差,及大气层中电离层和对流层延迟效应之影响。
In order to calculate the satellite orbit in GPS data process,it is more efficient to use polynomial methods to fit the orbit curve with the parameters of GPS broadcast ephemeris. 利用多项式拟合的方法计算GPS卫星在轨坐标时,使用正交多项式可有效避免计算过程中出现的病态矩阵。
Abstract The variation equation of the satellite orbit elements under both J2 and drag perturbations was derived based on the Gauss perturbation equation. 摘要基于高斯摄动方程，推导了卫星在同时考虑J2和大气摄动情况下的轨道根数变化方程。
The experiment result with real measurement shows that the new method can be used in real time autonomous satellite orbit determination with high accuracy. 实测数据的计算结果表明,新的定轨方法可以实时自主地得出卫星轨道的位置,并能达到较高的定轨精度。
The man-made satellite orbits the earth every 48 hours. 那颗人造卫星每48小时绕地球轨道运行一周。
Arthur Kantrowitz for the first time in 1972. As a novel propulsion technology, it can be applied in many fields, such as micro-satellite launch, satellite orbit control and space debris removal. 自1972年由Kantrowitz提出这一概念以来，受到世界各国的广泛关注。
The harmonic analysis along satellite orbit are used to withdraw tidal wave from TOPEX/POSEIDON satellite altimeter data in the Bohai Sea, Yellow Sea, East China Sea and South China Sea. 文中对Topex/Poseidon高度计资料进行了沿轨调和分析。
The design,selection and impact factors analysis of important system design parameters,including satellite orbit altitude,working system and frequency,power and aperture,PRF and waveform are studied. 讨论了天基雷达系统用于运动目标探测设计的相关问题,并对卫星轨道高度、工作体制、雷达工作波段、功率孔径积、雷达脉冲重复频率和波形等重要参数的设计、选择、影响因素进行了分析。
Precise orbit parameters have an important effection in the geometrical using of radar satellite.Based on Konecny model, this paper discussed the correction of ERS satellite orbit parameters. 摘要利用改进等效中心投影模型，对欧洲空间局资源卫星(ERS)轨道参数予以精改正。
The space shuttle will orbit a weather satellite. 太空梭将把一个气象卫星送入运行轨道。
The launch vehicle lifts the satellite into orbit. 太空火箭将人造卫星送入运行轨道。
Oliver Montenbruck, Eberhard Gill, Satellite Orbits, Springer-Verlag, Berlin, 2000. 刘林，《人造地球卫星轨道力学》，高等教育出版社，北京，1992。
A method of creating satellite orbits by use of STK software is introduced in this paper. 分析铝电解多功能天车轨道接头局部压溃的原因,介绍采用手工堆焊工艺修复方案之全过程。