In the multi-constellation satellite navigation system,all the visible satellites are used for positioning,which will increase the computation amount of the receiver and affect the real-time positioni
The receiver autonomous integrity monitoring(RAIM)technology,which with the advantage of quick response and completed independent,plays an important role in the integrity monitoring system of GNSS.Wit
This paper established a constellation optimization model for global navigation enhancement,of which RAAN is non-uniformly distributed,aimed at GDOP(geometric dilution of precision)optimization of imp
一、抛题聚"点",聚焦思维点,即以"一项运动技能为例,探究如何在技能教学中强化身体素质"为点,汇总参与者的金点子,聚焦思维。聚焦思维碰撞出智慧的火花,由点及面,步步深入,能让参与者明确具体的形式和做法,为课堂实践服务。创新教具增加练习密度,强化身体素质,如,利用废纸、沙包、矿泉水瓶等;通
This paper focuses on the optimal design of the near space navigation network configuration concerning a specific target area.Optimal design not only ensure navigation service for specific area with h
The estimate of Grid Ionospheric Vertical Delay(GIVD)and Grid Ionospheric Vertical Delay Error(GIVE)is the core content of ionospheric delay processing section in Satellite Based Augmentation Systems(
In this paper,we presented a method for assessing the broadcast ephemerides accuracy of QZSS by comparing the measured broadcast ephemerides with precise orbit and clock products provided by MGEX.By u
The prediction accuracy of satellite clock bias(SCB)directly affects the performance of navigation system.According to the spectrum analysis method,the periodic characteristics of satellite clocks are
Using the Space Environment Prediction Centers related products,performance and analysis on broadcast ionosphere model during the small magnetic storm on April 4,2017.The result shows that storm have
The research goal of this paper is the design analysis of the construction of navigation constellation stars in time division system to meet the requirements of navigation constellation in terms of me