搜索结果: 1-12 共查到“工学 GLONASS”相关记录12条 . 查询时间(0.046 秒)
GPS AND GLONASS COMBINED STATIC PRECISE POINT POSITIONING (PPP)
GPS GLONASS Precise Point Positioning (PPP)
2016/7/4
With the rapid development of multi-constellation Global Navigation Satellite Systems (GNSSs), satellite navigation is undergoing drastic changes. Presently, more than 70 satellites are already availa...
Steffen Thoelert received his diploma degree in Electrical Engineering with fields of expertise in high-frequency engineering and communications at the University of Magdeburg in 2002. The next four y...
Statistical Characterization of GLONASS Broadcast Ephemeris Errors
GLONASS Broadcast Ephemeris
2015/6/24
For critical navigation applications such as aircraft approach and landing, there is a general desire to use multi-constella-tion global navigation satellite systems (GNSS) to enhance availability and...
Demonstrations of Multi-Constellation Advanced RAIM for Vertical Guidance using GPS and GLONASS Signals
Multi-Constellation Advanced RAIM Vertical Guidance GPS GLONASS Signals
2015/6/24
In the near future, many more navigation satellites with dual frequency L1 and L5 will be deployed. The increased number of satellites and the possibility of mitigating the ionospheric delay using dua...
As GLONASS has fully restored its constellation, there is an increasing desire to use multiple constellations to im-prove positioning performance. Knowledge of GLONASS signal-in-space (SIS) error beha...
Statistical Characterization of GLONASS Broadcast Clock Errors and Signal-In-Space Errors
Statistical Characterization GLONASS Broadcast Clock Errors Signal-In-Space Errors
2015/6/24
With more than 70 navigation satellites orbiting the Earth,global navigation satellite systems (GNSS) users are fas-cinated to use multiple constellations to enhance position-ing availability, accurac...
Incorporating GLONASS into Aviation RAIM Receivers
Incorporating GLONASS Aviation RAIM Receivers
2015/6/24
Recently the Russian government issued a mandate on the use of their GLObal NAvigation Satellite System (GLONASS) for Russian operated aircraft [1]. There is some concern and uncertainty both in exact...
无人机CNSS/GLONASS组合导航技术
无人机 组合导航 北斗卫星导航系统 GLONASS 导航系统
2016/9/26
为实现无人机导航系统覆盖范围大、精度高、动态强等要求，从分析我国无人机导航现状入手，研究 CNSS/GLONASS 组合导航定位数据解算方法。基于“当前”统计模型建立状态方程和观测方程，并通过飞行实验 和数据分析对相关性能进行验证。结果表明：提出的CNSS/GLONASS 组合导航定位数据解算方法可实现2 种系统 的优势互补，提高北斗系统在无人机高动态导航中的可用性，增强无人导航精度。
组合GPS/GLONASS加权单点定位方法
组合GPS/GLONASS 单点定位 验后估计
2008/6/16
提出了一种基于验后估计法定权的组合GPS/GLONASS单点定位方法。研究表明，该方法理论上严格，实践上可行，比根据经验给GPS/GLONASS组合观测量值定权更合理。该方法可以推广到组合GPS/GLONASS伪距和载波相位相对定位。
俄罗斯将加倍生产Soyuz火箭 推进Glonass全球定位系统布局
俄罗斯
2008/1/18
据Space－travel网站2006年5月17日报道，俄罗斯主要的航天器公司负责人17日表示，该公司打算在外国投资者的帮助下加倍生产有人驾驶的Soyuz太空船。据其他来自柏林的俄罗斯太空新闻方面的消息称，俄官员已经宣布计划用八颗新的卫星来补充其全球导航卫星系统（Glonass），这八颗卫星中当中有五颗将于今年年内被送入太空，其他三颗将在2007年进入太空工作。位于西伯利亚克拉斯诺亚尔斯克地区的俄...
研究了ＧＰＳ和ＧＬＯＮＡＳＳ在民用航空中的应用前景。分析了组合ＧＰＳ和ＧＬＯＮＡＳＳ所具备的可用性、精确性和完整性潜力。组合ＧＰＳ／ＧＬＯＮＡＳＳ在我国民航中具有重要的技术与战略意义。提出了一种集成１２通道ＧＰＳ／ＧＬＯＮＡＳＳ接收机的结构与实现。射频前端部分采用３级变频将ＧＰＳ和ＧＬＯＮＡＳＳ信号变至中频并采样为同相与正交样本。数字处理部分对各样本加以积累与处理，解调卫星的导航电文。在导航解算中...