搜索结果: 1-13 共查到“航空、航天科学技术 RAIM”相关记录13条 . 查询时间(0.046 秒)
Further Development of Galileo-GPS RAIM for Vertical Guidance
Further Development Galileo-GPS RAIM Vertical Guidance
2015/6/25
With the much anticipated deployment of Galileo, a new partner will rise on the sky of Global Navigation Satellite Systems (GNSS). Equally anticipated is the launch of the modernized block III GPS sat...
In the next ten years the number of pseudorange sources and their quality is expected to increase dramatically:The United States is going to add two new civil frequencies (L5 and L2C) in the modernize...
Multiple Hypothesis RAIM with Real-Time FDE and Forecasted Availability for Combined Galileo-GPS Vertical Guidance
Multiple Hypothesis RAIM Real-Time FDE Forecasted Availability Galileo-GPS Vertical Guidance
2015/6/25
The number of ranging sources for the aviation user is expected to increase with the Galileo system becoming fully operational over the next decade, and the projected launch of a modernized GPS III co...
Hysteresis in RAIM
Hysteresis RAIM
2015/6/25
Absolute RAIM algorithms proposed for vertical guidance are based on a snapshot approach. At a given time, each satellite has a probability of being in a faulted state which does not depend on how lon...
Prototyping Advanced RAIM for Vertical Guidance
Prototyping Advanced RAIM Vertical Guidance
2015/6/25
In the next decade, the GNSS environment is going to undergo a major transformation. First, two more GNSS core constellations are expected to be launched, Galileo and Compass. When these constellation...
Advanced RAIM Demonstration using Four Months of Ground Data
Advanced RAIM Demonstration Months Ground Data
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...
A Proposal for Multi-Constellation Advanced RAIM for Vertical Guidance
Proposal Multi-Constellation Advanced RAIM Vertical Guidance
2015/6/24
The GNSS environment will experience major changes in the coming years. GPS and GLONASS are undergoing modernization phases, while Galileo and Compass are currently in their deployment phase.
In the next decade, several important developments will have a major impact on civil aviation: the deployment of Galileo and Compass, the modernization of GPS, and the fact that all these core constel...
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...
Development of a Real-time GNSS Software Receiver for Evaluating RAIM in Multi-constellation
Real-time GNSS Software Receiver Evaluating RAIM Multi-constellation
2015/6/24
As Global Navigation Satellite System continues to upgrade, there will be an increasing number of satellites upgrade, there will be an increasing number of satellites of-life users like aviation, high...
基于非相干积累的微小伪距偏差RAIM方法研究
卫星导航系统 接收机自主完好性监测 微小缓变伪距偏差 奇偶矢量 非相干积累
2014/7/8
针对传统RAIM算法难以检测连续微小伪距偏差的问题，提出一种基于非相干积累的微小伪距偏差RAIM方法。该方法通过对多个历元时刻奇偶矢量的非相干积累，使得检测统计量的非中心参数增大，从而提高算法对于微小伪距偏差的故障检测概率。理论分析和仿真结果表明，该方法在历元累加数为10时，可以显著提高对微小伪距偏差的检测性能，其可检测最小伪距偏差值约为传统奇偶矢量法的1/3。同时，该方法无需判断伪距偏差符号，在...
一种可检测和改正微小慢变伪距偏差的新RAIM方法
卫星导航系统 接收机自主完好性监测 微小慢变伪距偏差
2010/8/18
在卫星导航系统各种应用场合中，漫反射多路径效应、通道一致性、大气 延迟改正模型不精确等多种因素将导致伪距观测量出现微小慢变偏差，使导航接收机的定位 精度下降。传统的接收机自主完好性监测（RAIM）方法基于单历元“快照”处理，检测性能 依赖于故障卫星伪距偏差，故在检测微小伪距偏差时存在局限性。提出了一种基于多历 元积累检测量的新RAIM方法，增大了积累后奇偶矢量的等效伪距偏差，提高了对微小慢变伪 距...