The indoor positioning technology based on Beidou/GPS pseudolite can improve the indoor signal coverage and geometric configuration.Due to the mechanism of complex environment and navigation signal ha
Useless satellites permanently stay in operational orbit occupy valuable orbital resources,and that increase the collision risk of other active satellites.If the useless satellites break up,the massiv
Due to the fact that the double-satellite active positioning function of Beidou RDSS system needs the users are at least double-layer overlapped by GEO satellites,so the ground central station (GCS) o
In March 2016,China launched IGSO-6 satellite.To obtain actual test values of the performance indexes,test and evaluation works need to be done before IGSO-6 satellite provides services formally,which
Limited by signal power or bandwidth,traditional navigation measures have ceiling hard to reach so that there are some problems of lacking navigation precision,susceptible to interference,insufficient
In this paper,a method is proposed to build a real-time massive vehicle big data collection platform,and develops BD GNSS sub-meter navigation and 4G communication systems for private cars.
GPS is a highly precise tool in horizontaland vertical crustal motion studies.GPS coordinate time series are influenced by orbit error,clock error andthe effects of geophysical signals.
This paper proposes a parameter design method of a second-order KF tracking loop in the deep integration architecture according to inertial sensor errors and receiver oscillator errors.Firstly,the eff
Due to its properties of low attenuation,high capacity and reliability,the widespread optical fiber network has become an attractive option for long-distance transmission.
With the rapid development and application of GNSS(Global Navigation Satellite System) high precision positioning technology,multipath signal model,especially in urban canyon environment,has received