Abstract The availability of orbit information with high precision and low latency is a key requirement for many Earth-observation missions, predominantly in the field radio occultation. Traditionally, precise determination solutions low-Earth (LEO) satellites are obtained offline on ground after downloading GNSS measurements auxiliary spacecraft data to processing center. this depends...

The orbital inclination angle of the GLONASS constellation is about 10° larger than that GPS, Galileo, and BDS. Theoretically, higher could provide better observation geometry in high latitude regions. A wealth research has investigated positioning accuracy its impact on multi-GNSS, but rarely considered contribution constellation’s large orbit angle. performance different regions evaluated bot...

Utilization of global positioning system (GPS) to analyze the movements of machinery during the asphalt paving process is a growing practice. However, the accuracy of GPS measurements is affected by a number of factors that lead to noise in the GPS data. Due to these missing accuracy in the GPS data the asphalt paving professionals have problems interpreting and using the data in their operatio...

The Global Positioning System (GPS) can be utilised in a wide range of deformation monitoring applications. During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The strategy is to deploy a few permanent, ‘fiducial’ GPS stations with dual-frequency, geodetic-grade recei...

Since its introduction to civilian users in the early 1980's, the Global Positioning System (GPS) has been playing an increasingly important role in high precision surveying and geodetic applications. Like traditional geodetic network adjustment, data processing for precise GPS static positioning is invariably performed using the least squares method. To employ the least squares method for GPS ...

This study uses the observed vertical displacements of Global Positioning System (GPS) time series obtained from the Crustal Movement Observation Network of China (CMONOC) with careful pre- and post-processing to estimate the seasonal crustal deformation in response to the hydrological loading in lower three-rivers headwater region of southwest China, followed by inferring the annual EWH change...

For high precision static GPS positioning applications, carrier phase measurements have to be processed. It is well known that there are two important aspects to the optimal processing of GPS measurements: the definition of the functional model, and the associated stochastic model. These two models must be correctly defined in order to achieve high reliability in the positioning results. The fu...

The advancement of GPS technology has made it possible to use GPS devices asorientation and navigation tools, but also as tools to track spatiotemporal information.GPS tracking data can be broadly applied in location-based services, such as spatialdistribution of the economy, transportation routing and planning, traffic managementand environmental control. Therefore, knowled...