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Effect of Ionosphere to GPS positioning

Analysis and Mitigation of Tropospheric Error Effect on GPS Positioning Using Real GPS Data

Analysis and Mitigation of Tropospheric Error Effect on GPS Positioning Using Real GPS Data

... As depicted in eq. 1, there are a number of possible sources of errors which can degrade the accuracy of position computed and hence adversely affect the performance of a GPS receiver. These error sources can be ...

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GPS positioning improvement by mitigating the ionospheric horizontal gradient

GPS positioning improvement by mitigating the ionospheric horizontal gradient

... the effect of the ionosphere over the equatorial region ...the ionosphere over the equatorial ...Reference Ionosphere (IRI) [12], which contains the value of electron density at various ...

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Differential ionosphere modelling for single reference long baseline GPS kinematic positioning

Differential ionosphere modelling for single reference long baseline GPS kinematic positioning

... ionospheric effect is considered to be one of the most important error sources limiting the quality of GPS kinematic ...Kalman-filter-based GPS ionosphere model for long-baseline kinematic ...

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Unscented Kalman Filter for GPS Based Positioning and Tracking Services

Unscented Kalman Filter for GPS Based Positioning and Tracking Services

... world, GPS requirement is increasing in almost every field for different ...is GPS receiver positioning in defense and civilian applications like online transportation tracking status, tracking ...

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Airborne GPS kinematic positioning and its application to oceanographic mapping

Airborne GPS kinematic positioning and its application to oceanographic mapping

... airborne GPS kinematic positioning requires the use of carrier phase measurements, the data processing of which suffers from the technical challenges of “on-the-fly” ambiguity resolution and cycle slip ...

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Simulating the Differential Positioning Mode Using One GPS Receiver

Simulating the Differential Positioning Mode Using One GPS Receiver

... point positioning by simulating the differential positioning ...unit GPS receiver after observing the fixed point with the same receiver and estimate the Doppler value; where it equals to the ...

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Microcontroller Differential GPS to Subtract Signal Delay Due to Ambient Free Electrons in the Ionosphere

Microcontroller Differential GPS to Subtract Signal Delay Due to Ambient Free Electrons in the Ionosphere

... Global Positioning System (GPS) receiver that is more precise than one GPS receiver on its ...a GPS receiver’s measured position and its actual position, then use radio frequency (RF) ...

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Study the Effect of Surrounding Surface Material Types on the Multipath of GPS Signal and Its Impact on the Accuracy of Positioning Determination

Study the Effect of Surrounding Surface Material Types on the Multipath of GPS Signal and Its Impact on the Accuracy of Positioning Determination

... the GPS antenna from elevation angles greater than ...of GPS antenna such as the ground plane and normal ...reflected GPS signals, it also shows the ground plane antenna is capable to reduce the ...

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The Application and Analysis of Nonlinear Filtering Used in GPS Dynamic Positioning

The Application and Analysis of Nonlinear Filtering Used in GPS Dynamic Positioning

... (2) With single frequency be estimated parameters more precise point positioning (PPP), especially when more visible satellites, this example USES the number of satellite is 5, state parameter reached 13. Higher ...

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The influnce of different processing parameters on estimated variation of GPS positioning

The influnce of different processing parameters on estimated variation of GPS positioning

... Multipath effect is also much more pronounced among low elevation satellites than signals that are directly ...of GPS measurement. To further comprehend the effect of different elevation cut-off ...

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Single Point Positioning Using GPS, GLONASS and BeiDou Satellites

Single Point Positioning Using GPS, GLONASS and BeiDou Satellites

... Figure 5 and Table 3 present the DOP values in the East (E), North (N) and Vertical (V) components and the Position Dilution Of Precision (PDOP) values for each processing cases along with the number of observed sat- ...

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Unequal Weighting for Improved Positioning in GPS-Less Sensor Networks

Unequal Weighting for Improved Positioning in GPS-Less Sensor Networks

... The position-aware units may be a small number of ad- vanced nodes which can be equipped with positioning sys- tems to serve a much greater number of simple devices. Af- ter all nodes have been scattered in their ...

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GPS/BDS relative positioning assessment by zero baseline observation

GPS/BDS relative positioning assessment by zero baseline observation

... of GPS and BDS could improve the position precision, since the Chinese BDS was opened to the Asia-Pacific ...combining GPS/BDS or more precise measurement applied? The studies which have been focused on ...

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The Effect of Electron Inertia and Suspended Particles on
the Ionosphere of the Earth

The Effect of Electron Inertia and Suspended Particles on the Ionosphere of the Earth

... the effect of suspended particles on the onset of Benard convection in ...the effect of suspended particles is to destabilize the layer and the magnetic field has a stabilizing ...the effect of ...

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GPS Medium Range Kinematic Positioning for the Seafloor Geodesy of Eastern Taiwan

GPS Medium Range Kinematic Positioning for the Seafloor Geodesy of Eastern Taiwan

... The authors would like to express their sincere thanks to many of their colleagues and assistants who have devoted their efforts to the seafloor geodetic surveys for this study. International GPS Service (IGS) who ...

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An Improved Model for Single Frequency GPS/GALILEO Precise Point Positioning

An Improved Model for Single Frequency GPS/GALILEO Precise Point Positioning

... single-frequency GPS and Galileo observables in BSSD ...for GPS and Galileo satellite orbit and clock errors ...the GPS time and since we use mixed GNSS receivers that also use GPS time as a ...

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Monitoring of the ionosphere TEC variations during the 17th August 1999 Izmit earthquake using GPS data

Monitoring of the ionosphere TEC variations during the 17th August 1999 Izmit earthquake using GPS data

... Global Positioning System (GPS)/interferometric synthetic aperture radar (In- SAR), and the geochemistry of gas ...ionospheric GPS TEC anomalies from far ...

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How useful is satellite positioning system (GPS) to track gait parameters? A review

How useful is satellite positioning system (GPS) to track gait parameters? A review

... satellite positioning can provide an alternative tool to monitor outdoor ...high-end GPS receivers provide centimeter accuracy positioning with 5–20 Hz sampling rate: this allows the stride-by-stride ...

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Understanding The GPS   An Introduction to the Global Positioning System   Gregory French pdf

Understanding The GPS An Introduction to the Global Positioning System Gregory French pdf

... A drawback is that the range is often rather short, on the order of 50 to 75 kilometers, leaving many signal gaps in the system. The two major suppliers of this type of system, Accqpoint and Differential Correc- tions, ...

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Hybrid Uplink Time Difference of Arrival and Assisted GPS Positioning Technique

Hybrid Uplink Time Difference of Arrival and Assisted GPS Positioning Technique

... hybrid positioning system is merely one in which multiple systems are used for positioning ...Global Positioning System (GPS) as it is the only global positioning network ...and ...

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