1.A specialized multicast routing algorithm(MRA) was developed to provide efficient multicast routing in low earth orbit(LEO) satellite networks.
为了解决低轨(low earth orbit,LEO)卫星网络中需要快速高效组播路由协议的问题,提出一种新型LEO卫星IP网络组播路由算法。
2.(3)The Orbit tall wheatgrass (Eiytrigia pontica), the Chief, and intermediate wheatgrass (Elytrigia intermedia Nevski) and the Altai wildrye grass(Elymus angustus) had strong resistence to both cold and drought, high productivity, but they shoud be utilized in the right time, otherwise their feeding value could be reduced.
Orbit长穗冰草、Chief 中间冰草、阿尔泰野麦草表现为抗寒耐旱,产草量高,但要适时利用,否则会降低饲用价值。
3.Endovascular treatment of small and wide-nick intracranial aneurysms with TRUFILL DCS Orbit coil
TRUFILL DCS Orbit水解脱弹簧圈栓塞治疗颅内小动脉瘤及宽颈动脉瘤
4.This paper mainly studies the influence of the Synthetic Aperture Radar satellite Precise Orbit to the interferometry, including the basic principle of InSAR, the principle of precise orbit and the error analysis, the data form of satellite radar(ERS and ENVISAT ASAR) which relates about precise orbit and the data form of precise orbit which is provided by DEOS, the superior baseline model, Doppler parameter estimation, the introduction of baseline method, basic algorithm research and realization, the experiment result analysis.
本文主要研究了合成孔径雷达卫星精密轨道对干涉测量的影响与分析,其中包括InSAR的基本原理,精密轨道原理与误差分析,与精密轨道相关的卫星雷达(ERS和ENVISAT ASAR)数据格式和DEOS提供的精密轨道数据格式,最优基线模型,多普勒频率计算,基线方法介绍,基本算法研究与实现,实验结果分析。
5.In this thesis, based on Racah method of two-electron atom and non-relativistic energy structure for Helium-like atoms, the relativistic corrections and the fine structure of Helium-like atoms, including the relativistic mass correction, the Darwin correction terms, the electron-electron contact terms, the orbit-orbit interaction, the spin-orbit interaction, the spin-other-orbit interaction and the spin-spin interaction, are studied systemically using irreducible tensor.
本文以双电子原子结构的拉卡理论和类氦离子的非相对论原子结构的计算结果为基础，利用不可约张量理论，较为系统地研究了类氦离子的相对论效应和精细结构，包括相对论质量修正、达尔文修正、电子与电子之间接触相互作用、轨道-轨道相互作用、自旋-自旋相互作用、自旋-其它轨道相互作用以及自旋-轨道相互作用。
6.In this thesis, based on Racah theory and non-relativistic energy structure for Beryllium-like atoms, the relativistic corrections and the fine structure of Beryllium-like atoms, including the relativistic mass correction, the Darwin correction terms, the electron-electron contact terms, the orbit-orbit interaction, the spin-orbit interaction, and the spin-other-orbit interaction , are studied systematically using irreducible tensor theory.
本论文以拉卡理论和类铍离子的非相对论原子结构的计算结果为基础,利用不可约张量理论,较为系统地研究了类铍离子的相对论效应和精细结构,其中包括相对论质量修正、达尔文修正、电子与电子之间的接触相互作用、轨道-轨道相互作用、自旋-自旋相互作用、自旋-其它轨道相互作用以及自旋-轨道相互作用。
7.This includes the spin-orbit (SO), thespin-spin (SS), spin-other-orbit (SOO) and orbit-orbit (OO) magnetic interactions aswell as the two approaches (including PTM and CDM) in the theoretical determinationof SH parameters.
这些包括三个方面,(i)SO、SS、SOO以及OO磁相互作用的理论背景;
8.The thesis includes following investigations:1、 Time systems and coordinate systems are worked over systematically: At practical requests of satellite orbit determination, conversions among various coordinate systems, and how to compute orbit-determination parameters with JPL ephemeris in precise orbit determination are discussed. Further more, basic block diagrams and detailed formulas are presented.
1、系统研究卫星精密定轨的时间系统和坐标系统：结合卫星定轨的实际要求，讨论了各系统之间的转换关系，对在精密定轨中如何使用JPL星历数据进行定轨参数的计算进行了阐述，并给出了基本框图和详细的公式。
9.Results: Of them, 117 cases (3.33%) had orbit complication, including 2 of medial rectus damage, 12 of orbital cellulitis, 14 of orbit fat hemiation and 89 of peri-orbit ecchymosis.
结果：117例（侧）发生眶并发症，其中一侧内直肌受损2例，眶内蜂窝织炎12例，眶脂肪疝出14例，眶周瘀斑89例，总发生率为3.33%。
10.An on-line minimum-variance estimator was developed for thrust acceleration applied to orbit transfer using discrete-time radar measurements.The mass-flow-rate of propellant was selected as a state variant,which was estimated by employing an integral state model and EKF filter.The variation equations for measurement vector to mass-flow-rate have been established to linearize the discrete-time measurement equations.The algorithm has applied successfully to maneuver process in commanding satellite into Geo-stationary orbit.The results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process.
飞行器轨道机动过程中,为跟踪、定位机动目标和干预机动控制过程,需要统计处理离散的雷达观测量实时估计推进发动机的推力,进而确定飞行器的瞬时轨道参数.本文所述算法是该工程问题的探讨和解决方案.文章建立了轨道机动过程中连续变质量运动模型和离散雷达量测模型,推进发动机的质量秒耗量作为表征推力加速度的一个近似常量,应用扩展卡尔曼滤波对离散的雷达测量数据进行顺序统计处理给出秒耗量的最小方差估计;文章详细地推导了线性化量测模型的变分方程和观测矩阵;仿真结果表明该算法能快速、准确地估计推进发动机的质量秒耗量和向机动目标施加的实际推力.
