Improvement of Single-Frequency GPS Positioning Performance Based on EGNOS Corrections in Algeria

2020 ◽  
Vol 73 (4) ◽  
pp. 846-860 ◽  
Author(s):  
Lahouaria Tabti ◽  
Salem Kahlouche ◽  
Belkacem Benadda ◽  
Bilal Beldjilali
Keyword(s):  
Global Positioning System ◽  
Single Point ◽  
Single Frequency ◽  
Positioning System ◽  
Ionospheric Correction ◽  
Error Sources ◽  
Positioning Accuracy ◽  
Gps Positioning ◽  
Global Positioning ◽  
Differential Corrections

The main objective of the European Geostationary Navigation Overlay System (EGNOS) is to improve the positioning accuracy by correcting several error sources affecting the Global Positioning System (GPS) and to provide integrity information to GPS signals for users in real time. This research presents analysis used to investigate improvement in the performance of single-frequency GPS positioning using EGNOS corrections in Algeria. In this study, we performed position measurements with two calculation approaches, the first based on GPS single-point positioning and the second using EGNOS differential corrections. Positioning accuracy was determined by comparison with the known precise coordinates of the sites; and then the improved ionospheric correction using EGNOS was investigated. The results revealed that GPS + EGNOS performance was significantly improved compared with GPS alone, when measurements of horizontal and vertical accuracy were taken into account, and that the EGNOS corrections improved east and north components slightly, and the up component significantly.

Experimental Study on Accuracy of GPS Positioning

2012 ◽  
Vol 263-266 ◽  
pp. 346-349 ◽  
Author(s):  
Hong Shi ◽  
Dong Hai Qiao
Keyword(s):  
Global Positioning System ◽  
Small Area ◽  
Positioning System ◽  
Gps Receiver ◽  
Positioning Accuracy ◽  
Gps Positioning ◽  
Global Positioning ◽  
Open Ground ◽  
Geophysical Measurement ◽  
Measured Distance

Geophysical measurement relies on the positioning accuracy of GPS (global positioning system). Usually the positioning accuracy is area dependent. This paper uses a commercially available GPS receiver to verify its positioning accuracy with practical measurement in a small area. With a measurement setup in an open ground, the results show that even for the fixed point, the GPS measured positioning error of about 0.234 meter could be observed for a period of time. Of 12 GPS measured distance errors, only one is about 5.7 meters, all others are within the range of 3-5 meters of GPS receiver specification.

Determination of global positioning system (GPS) receiver clock errors: impact on positioning accuracy

2009 ◽  
Vol 20 (7) ◽  
pp. 075105 ◽  
Author(s):  
Ta-Kang Yeh ◽  
Cheinway Hwang ◽  
Guochang Xu ◽  
Chuan-Sheng Wang ◽  
Chien-Chih Lee
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Gps Receiver ◽  
Positioning Accuracy ◽  
Global Positioning ◽  
Receiver Clock

Orbit Determination of Spacecraft Using Global Positioning System Single-Frequency Measurement

2002 ◽  
Vol 39 (5) ◽  
pp. 796-801 ◽  
Author(s):  
Jae-Cheol Yoon ◽  
Kyoung-Min Roh ◽  
Eun-Seo Park ◽  
Bo-Yeon Moon ◽  
Kyu-Hong Choi ◽  
...  
Keyword(s):  
Global Positioning System ◽  
Orbit Determination ◽  
Frequency Measurement ◽  
Single Frequency ◽  
Positioning System ◽  
Global Positioning

Characterizing the accuracy of Global Positioning System for single point positioning at African low-latitude region

2021 ◽  
pp. 1-16
Author(s):  
Oladipo Emmanuel Abe ◽  
Babatunde Adeyemi ◽  
Olugbenga Ogunmodimu ◽  
Israel Emmanuel ◽  
E.J. Oluwadare ◽  
...  
Keyword(s):  
Global Positioning System ◽  
Single Point ◽  
Positioning System ◽  
Low Latitude ◽  
Single Point Positioning ◽  
Global Positioning ◽  
Latitude Region ◽  
Point Positioning

scholarly journals Determination of Navigation System Positioning Accuracy Using the Reliability Method Based on Real Measurements

2021 ◽  
Vol 13 (21) ◽  
pp. 4424
Author(s):  
Mariusz Specht
Keyword(s):  
Global Positioning System ◽  
Navigation System ◽  
Classical Method ◽  
Positioning System ◽  
Positioning Accuracy ◽  
Positioning Systems ◽  
Position Errors ◽  
Accuracy Measure ◽  
Reliability Method ◽  
Global Positioning

In navigation, the Twice the Distance Root Mean Square (2DRMS) is commonly used as a position accuracy measure. Its determination, based on statistical methods, assumes that the position errors are normally distributed and are often not reflected in actual measurements. As a result of the widespread adoption of this measure, the positioning accuracy of navigation systems is overestimated by 10–15%. In this paper, a new method is presented for determining the navigation system positioning accuracy based on a reliability model where the system’s operation and failure statistics are referred to as life and failure times. Based on real measurements, the method proposed in this article will be compared with the classical method (based on the 2DRMS measure). Real (empirical) measurements made by the principal modern navigation positioning systems were used in the analyses: Global Positioning System (GPS) (168’286 fixes), Differential Global Positioning System (DGPS) (900’000 fixes) and European Geostationary Navigation Overlay Service (EGNOS) (900’000 fixes). Research performed on real data, many of which can be considered representative, have shown that the reliability method provides a better (compared to the 2DRMS measure) estimate of navigation system positioning accuracy. Thanks to its application, it is possible to determine the position error distribution of the navigation system more precisely when compared to the classical method, as well as to indicate those applications that can be used by this system, ensuring the safety of the navigation process.

scholarly journals Accuracy Analysis of Aircraft Position at Departure Phase Using DGPS Method

2020 ◽  
Vol 14 (1) ◽  
pp. 36-43 ◽  
Author(s):  
Kamil Krasuski ◽  
Janusz Ćwiklak
Keyword(s):  
Global Positioning System ◽  
Vertical Plane ◽  
Flight Test ◽  
Reference Station ◽  
Civil Aviation ◽  
Positioning System ◽  
Technical Standards ◽  
Mean Values ◽  
Global Positioning ◽  
Differential Corrections

AbstractThe aim of this paper is to present the problem of implementation of the Differential Global Positioning System (DGPS) technique in positioning of the aircraft in air navigation. The aircraft coordinates were obtained based on Global Positioning System (GPS) code observations for DGPS method. The DGPS differential corrections were transmitted from reference station REF1 to airborne receiver using Ultra High Frequency (UHF) radio modem. The airborne Thales Mobile Mapper receiver was mounted in the cabin in Cessna 172 aircraft. The research test was conducted around the military aerodrome EPDE in Dęblin in Poland. In paper, the accuracy of aircraft positioning using DGPS technique is better than 1.5 m in geocentric XYZ frame and ellipsoidal BLh frame, respectively. In addition, the obtained accuracy of aircraft positioning is in agreement with International Civil Aviation Organization (ICAO) Required Navigation Performance (RNP) technical standards for departure phase of aircraft. The presented research method can be utilised in Ground-Based Augmentation System (GBAS) in air transport. In paper, also the accuracy results of DGPS method from flight test in Chełm are presented. The mean values of accuracy amount to ±1÷2 m for horizontal plane and ±4÷5 m for vertical plane.

Research on Indoor 3D Location Technology Based on RSSI

2014 ◽  
Vol 696 ◽  
pp. 241-246 ◽  
Author(s):  
Bo Xin Mao ◽  
Shan Liu ◽  
Jian Ping Chai
Keyword(s):  
Real Time ◽  
Global Positioning System ◽  
Mobile Communication ◽  
Rapid Development ◽  
Three Dimensional ◽  
Propagation Model ◽  
Positioning System ◽  
Positioning Accuracy ◽  
Global Positioning ◽  
Positioning Method

With the rapid development of mobile communication, the GPS (Global Positioning System) which provides real-time global positioning system has not been able to meet the needs of the indoor accurate positioning. Through simulation, this paper implements the method of indoor three-dimensional positioning based on RSSI compared the positioning accuracy under several kinds of noise. We achieve the good indoor three-dimensional positioning method with the combination of cost, positioning accuracy and positioning precision through the filter and secondary positioning which establishes special propagation model for various different environments.

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