共查询到18条相似文献,搜索用时 250 毫秒
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目前尚无一种GNSS数据质量检测软件可以兼容RINEX格式第二版和第三版、同时兼容四大导航卫星系统,严重滞后于GNSS的发展。基于MATLAB语言研发了一种新的数据质量检测软件BQC,不仅可以处理单观测文件,还可以对多个观测文件进行批处理;可以输出四大导航卫星系统的卫星角度位置、多径误差、电离层延迟、载噪比和周跳等信息及统计报告,在批处理模式下还可对多观测文件的数据质量进行比对;与TEQC相比具有较强的兼容性、算法优越性和直观性。随着四大导航系统的逐步完善和RINEX格式第三版的推广使用,该软件将会为GNSS的建设成果检验工作提供一种有力的支撑工具。 相似文献
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随着我国北斗卫星导航系统的迅速发展,国际海运事业无线电技术委员会RTCM3版本标准格式的应用逐渐增多,网络RTK基准站网观测值存储的管理规范逐渐加强。针对安全保存基准站网RINEX格式观测数据文件的需求,开发软件将各基准站接收机发送的RTCM3实时数据流通过单向光闸存储为文件,同时实时解码RTCM3数据流生成RINEX格式的观测值文件并编码提供数据传输端口,最后通过实测数据验证程序解码编码的正确性。 相似文献
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与接收机无关的数据交换格式RINEX是一种在全球导航卫星系统GNSS测量领域中普遍采用的标准数据格式,但其升级速度超过数据处理软件的更新频率,导致高版本RINEX数据不能被大部分数据处理软件兼容。为提高数据的通用性,基于各版本RINEX标准数据格式的特点,文中采用Python语言设计开发了一款RINEX数据转换软件,实现观测数据、导航电文和气象数据在不同RINEX版本间的转换操作,满足用户的GNSS数据转换需求。软件测试结果表明,转换后文件的观测值编码类型符合目标版本RINEX规范要求,且转换前后编码对应的数据完整性和数据质量一致;此外,研制的软件编码转换结果与同类型软件保持一致。 相似文献
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由于卫星信号强度对接收机跟踪具有重要影响,将模拟器设置为不同大小的电平播发不同强度的GPS信号,以测试和芯星通(UB4B0)接收机跟踪卫星的情况;并将接收机采集的原始数据转换为RINEX格式的观测值文件和星历文件,通过星间单差、站星双差的方式计算伪距和载波相位的双差残差。通过对比不同信号强度下的卫星数和零基线双差残差,利用Matlab软件绘图,进一步分析GPS信号强度变化对接收机数据质量的影响。 相似文献
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简要介绍了天宝GNSS原始观测数据和RINEX格式数据的特点,对目前可用的天宝GNSS原始数据转换为RINEX格式的软件进行了详细的说明,并利用Python语言实现了批量转换,满足了测绘、国土等行业对于大量天宝观测数据转换的需求。 相似文献
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RINEX格式是GPS数据一种常用的标准数据格式,通用性强,利于多种型号的接收机联合作业,绝大多数商用软件都能处理。本文从生产实践出发,详细介绍了RINEX格式数据信息及常用的几种GPS接收机数据传输与转换方式,以及解算过程中出错数据元的检查和修正,对指导生产实践有一定的借鉴意义。 相似文献
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一个用于GPS数据操作的实用软件 总被引:4,自引:0,他引:4
介绍了一个简单实用的GPS工具软件,描述了针对不同型号的接收机,可以完成数据的标准RINEX格式转换、数据质量检查和编辑工作,尤其数据质量检查的结果对了解接收机性能和数据环境等具有一定的指导作用。 相似文献
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TEQC: The Multi-Purpose Toolkit for GPS/GLONASS Data 总被引:31,自引:11,他引:20
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Two methods for smoothing pseudorange observable by Carrier and Doppler are discussed. Then the procedure based on the RINEX observation files is tested using the Ashtech Z-XII3T geodetic receivers driven by a stable external frequency at UNSO. This paper proposes to adapt this procedure for the links between geodetic receivers, in order to take advantage of theP codes available onL1 andL2. This new procedure uses the 30-second RINEX observations files, the standard of the International GPS Service (IGS), and processes the ionosphere-free combination of the codesP1 andP2; the satellite positions are deduced from the IGS rapid orbits, available after two days. 相似文献
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NIEGuigen LIUJingnan 《地球空间信息科学学报》2005,8(1):8-13
Two methods for smoothing pseudorange observable by Carrier and Doppler are discussed. Then the procedure based on the RINEX observation files is tested using the Ashtech Z-XII3T geodetic receivers driven by a stable external frequency at UNSO. This paper proposes to adapt this procedure for the links between geodetic receivers, in order to take advantage of the P codes available on L1 and L2, This new procedure uses the 30-second RINEX observations files, the standard of the International GPS Service (IGS), and processes the ionosphere-free combination of the codes P1 and P2 ; the satellite positions are deduced from the IGS rapid orbits, available after two days. 相似文献
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介绍GPS接收机数据的RINEX标准交换格式,讨论二进制数据格式文件向文本文件转换的方法及需要注意的问题,通过分析HemisphereJ、avad、AC12、NavCom 4种不同OEM板二进制数据格式,指出GPS接收机的二进制数据文件向RINEX文件转换的一般方法,并编程实现所有程序,验证方法的正确性。 相似文献
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A new plotting program for Windows-based TEQC users 总被引:1,自引:0,他引:1
Stephen Hilla 《GPS Solutions》2002,6(3):196-200
In a 1999 issue of GPS Solutions (Vol. 3, No. 1) Estey and Meertens describe a multi-purpose software toolkit for GPS and
GLONASS data called TEQC (pronounced "tek"). The program's name reflects its three main functions: translating, editing, and
quality checking. TEQC can be used on many different computer platforms, including Windows-based personal computers. This amazingly
capable program can be used for converting native binary files from a wide variety of GPS receivers into the standard Receiver
Independent Exchange Format (RINEX). It can also be used for editing and quality-controlling existing RINEX files. And it
can be used for generating plot files of several different quantities normally associated with satellite observations. This
article describes a new C/C++ program which gives Windows-based TEQC users increased flexibility for viewing and printing
TEQC plot files. The user can now specify a start and stop time for each plot, a subset of satellites to be plotted, labels
for the x- and y-axes, and a title to appear at the top of each plot. The new software converts the original "Compact Format"
plot files output by TEQC into PostScript files, which can then be viewed or printed. An additional benefit of PostScript
files is that they can be used to provide high-quality, high-resolution graphics for document publishing.
Electronic Publication 相似文献
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Removing attitude-related variations in the line-of-sight for kinematic GPS positioning 总被引:1,自引:1,他引:0
Stavros A. Melachroinos Mayaba Tchalla Richard Biancale Yves Menard 《GPS Solutions》2011,15(3):275-285
We are presenting a method for removing attitude-related variations (ATTRVs) in dynamic 1 Hz GPS positioning. The ATTRVs are
separated into vertical and horizontal components. These result from the translational and rotational motions of the vehicle,
which is a marine research vessel in our case. We have developed new observation equations that use corrected pseudoranges
and carrier phases to account for ATTRVs. In the present contribution, we are only focusing on the vertical signals. These
modeled ATTRVs are included as corrections in the line-of-sight (LoS) to each GPS satellite in the RINEX data sets using a
new software called RNXATTCOR. Precise IGS sp3-orbits are used as inputs together with precise lever arm coordinates of the
onboard GPS antennas, observations from the marine inertial navigation system and a priori 3D position of the vessel. The
corrected RINEX data sets are then processed using kinematic processing or sequential processing in Precise Point Positioning
(PPP) mode. The reduction of the standard deviation from a running mean in the final processed GPS time series is about 95%.
The current method is being proposed for marine geodesy science applications such as along-track calibration/validation of
altimetry products, and also for applications related to offshore kinematic high precision GPS positioning such as drilling,
offshore platforms stability, marine pipeline positioning, earthquake monitoring and tsunami detection. 相似文献
18.
The International Atomic Time scale (TAI) is computed by the Bureau International des Poids et Mesures (BIPM) from a set of
atomic clocks distributed in about 40 time laboratories around the world. The time transfer between these remote clocks is
mostly performed by the so-called GPS common view method: The clocks are connected to a GPS time receiver whose internal software
computes the offsets between the remote clocks and GPS time. These data are collected in a standard formal called CCTF. In
the present study we develop both the procedure and the software tool that allows us to generate the CCTF files needed for
time transfer to TAI, using RINEX files produced by geodetic receivers driven by an external frequency. The CCTF files are
then generated from the RINEX observation files. The software is freely available at ftp://omaftp.oma.be/dist/astro/time/RINEX_CCTF.
Applied to IGS (International GPS Service) receivers, this procedure will provide a direct link between TAI and the IGS clock
combination. We demonstrate here the procedure using the RINEX files from the Ashtech Metronome (ZXII-T) GPS receiver, to
which we apply the conventional analysis to compute the CCTF data. We compared these results with the CCTF files produced
by a time receiver R100-30T from 3S-Navigation. We also used this comparison with the results of a calibrated time receiver
to determine the hardware delay of the geodetic receiver. ? 2001 John Wiley & Sons, Inc. 相似文献