TEQC软件对GPS数据质量的评定及软件界面的开发   总被引：8，自引：0，他引：8  

聂桂根  王院 《全球定位系统》2003,28(4):32-38

本文主要介绍用于GPS数据转换、编辑和质量检查的共享软件TEQC(Translate／Edit／Quality Check)。作为例子，对一GPS数据进行质量检查。并针对TEQC软件人机交互性差的缺点，进行了软件界面程序的初步开发。  相似文献   

The 3D electromagnetic response of the Earth to ring current and auroral oval excitation   总被引：4，自引：0，他引：4  

Ikuko Fujii  Adam Schultz 《Geophysical Journal International》2002,151(3):689-709

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基于L5的GPS电离层折射误差改正     

刘庆元  包海  王潜心  王虎 《测绘工程》2008,17(1):17-20

在分析电离层折射误差模型以及双频改正模型的基础上,在原有的双频数据处理方法之下,利用GPS现代化中新增的L5频率与原有的L1、L2频率进行新的双频组合,再利用双频组合解算来得出电离层折射误差,以取得双频最优改正值,进而即可对GPS的电离层折射误差进行有效的改正。同时,简单介绍利用三频观测值改正电离层折射误差二阶项的方法。这些方法的使用均可提高GPS电离层折射误差的改正精度,从而提高GPS的定位精度,扩大其应用的深度与广度。  相似文献   

基于GPS数据的地震前电离层TEC异常研究   总被引：2，自引：0，他引：2  

孟泱  王泽民  鄂栋臣 《武汉大学学报(信息科学版)》2008,33(1):81-84

选取印度洋区域7个IGS站,运用2004年12月26日印度洋地震前后共计25 d的GPS观测数据,计算出高时空分辨率的VTEC.综合考虑了太阳和地磁活动参数,运用统计分析的方法,详尽阐释了地震发生前TEC减小的电离层异常现象.  相似文献   

一种GNSS网络RTK改进的综合误差内插方法   总被引：2，自引：1，他引：2  

唐卫明  刘经南  刘晖  白清波 《武汉大学学报(信息科学版)》2007,32(12):1156-1159

在全球导航卫星系统（GNSS）网络RTK综合误差内插法（CBI）的基础上，提出了一种改进的综合误差内插方法（MCBI）。该方法把综合误差分为对流层模型改正、一阶电离层影响和除一阶电离层影响外的其他综合影响3个部分。实例证明了该方法不仅在精度上比综舍误差内插法要高，而且更利于流动站的应用。  相似文献   

The IRI model residual difference and the new method of N(h)-profile determination     

Olga A. Maltseva  O. S. Poltavsky  A. S. Shlyupkin 《Acta Geophysica》2007,55(3):441-458

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Two-dimensional electric field measurements in the ionospheric footprint of a flux transfer event     

K. A. McWilliams  T. K. Yeoman  S. W. H. Cowley 《Annales Geophysicae》2001,18(12):1584-1598

Line-of-sight Doppler velocities from the SuperDARN CUTLASS HF radar pair have been combined to produce the first two-dimensional vector measurements of the convection pattern throughout the ionospheric footprint of a flux transfer event (a pulsed ionospheric flow, or PIF). Very stable and moderate interplanetary magnetic field conditions, along with a preceding prolonged period of northward interplanetary magnetic field, allow a detailed study of the spatial and the temporal evolution of the ionospheric response to magnetic reconnection. The flux tube footprint is tracked for half an hour across six hours of local time in the auroral zone, from magnetic local noon to dusk. The motion of the footprint of the newly reconnected flux tube is compared with the ionospheric convection velocity. Two primary intervals in the PIFs evolution have been determined. For the first half of its lifetime in the radar field of view the phase speed of the PIF is highly variable and the mean speed is nearly twice the ionospheric convection speed. For the final half of its lifetime the phase velocity becomes much less variable and slows down to the ionospheric convection velocity. The evolution of the flux tube in the magnetosphere has been studied using magnetic field, magnetopause and magnetosheath models. The data are consistent with an interval of azimuthally propagating magnetopause reconnection, in a manner consonant with a peeling of magnetic flux from the magnetopause, followed by an interval of anti-sunward convection of reconnected flux tubes.  相似文献   

Ionospheric detection of gravity waves induced by tsunamis   总被引：1，自引：0，他引：1  

Juliette Artru  Vesna Ducic  Hiroo Kanamori  Philippe Lognonné  Makoto Murakami 《Geophysical Journal International》2005,160(3):840-848

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地磁太阴日变化L的M2和O1潮   总被引：1，自引：0，他引：1  

康国发  胡家富 《地震研究》2000,23(3):329-332

介绍Ｍ２和Ｏ１潮引起的地磁太阳日变化Ｌ谐波分析方法,计算了佘山地磁台的磁偏角,水平和垂直分量Ｌ的谐波系数,分析了Ｌ变化的基本特征,季节变化和场源性质,并与国外其它台站的结果进行对比分析。  相似文献   

Annual and semiannual variations in the ionospheric F2-layer. I. Modelling     

L. Zou  H. Rishbeth  I. C. F. Müller-Wodarg  A. D. Aylward  G. H. Millward  T. J. Fuller-Rowell  D. W. Idenden  R. J. Moffett 《Annales Geophysicae》2000,18(8):927-944

Annual, seasonal and semiannual variations of F2-layer electron density (NmF2) and height (hmF2) have been compared with the coupled thermosphere-ionosphere-plasmasphere computational model (CTIP), for geomagnetically quiet conditions. Compared with results from ionosonde data from midlatitudes, CTIP reproduces quite well many observed features of NmF2, such as the dominant winter maxima at high midlatitudes in longitude sectors near the magnetic poles, the equinox maxima in sectors remote from the magnetic poles and at lower latitudes generally, and the form of the month-to-month variations at latitudes between about 60°N and 50°S. CTIP also reproduces the seasonal behaviour of NmF2 at midnight and the summer-winter changes of hmF2. Some features of the F2-layer, not reproduced by the present version of CTIP, are attributed to processes not included in the modelling. Examples are the increased prevalence of the winter maxima of noon NmF2 at higher solar activity, which may be a consequence of the increase of F2-layer loss rate in summer by vibrationally excited molecular nitrogen, and the semiannual variation in hmF2, which may be due to tidal effects. An unexpected feature of the computed distributions of NmF2 is an east-west hemisphere difference, which seems to be linked to the geomagnetic field configuration. Physical discussion is reserved to the companion paper by Rishbeth et al.  相似文献