Critical error effects and analysis in carrier phase-based airborne GPS positioning over large areas

1995 ◽  
Vol 69 (4) ◽  
pp. 261-273 ◽  
Author(s):  
J. Shi ◽  
M. E. Cannon
Keyword(s):  
Carrier Phase ◽  
Gps Positioning ◽  
Critical Error

scholarly journals Code and carrier phase based short baseline GPS positioning: computational aspects

GPS Solutions ◽  
2004 ◽  
Vol 7 (4) ◽  
pp. 230-240 ◽  
Author(s):  
Xiao-Wen Chang ◽  
Christopher C. Paige ◽  
Lan Yin
Keyword(s):  
Carrier Phase ◽  
Short Baseline ◽  
Gps Positioning ◽  
Computational Aspects

scholarly journals Inverse-GPS Positioning Using Carrier Phase.

2003 ◽  
Vol 123 (2) ◽  
pp. 255-261
Author(s):  
Tomohiro Matano ◽  
Toshiyuki Tanaka
Keyword(s):  
Carrier Phase ◽  
Gps Positioning

Efficiency of carrier-phase integer ambiguity resolution for precise GPS positioning in noisy environments

2006 ◽  
Vol 81 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Liqiang Zhu ◽  
Ying-Cheng Lai ◽  
Mayur Shah ◽  
Sultan Mahmood
Keyword(s):  
Ambiguity Resolution ◽  
Carrier Phase ◽  
Integer Ambiguity Resolution ◽  
Integer Ambiguity ◽  
Noisy Environments ◽  
Gps Positioning

Sub-Metre Accuracy for Stand Alone GPS Positioning in Hydrographic Surveying

2004 ◽  
Vol 57 (1) ◽  
pp. 135-144 ◽  
Author(s):  
M. H. Saka ◽  
T. Kavzoglu ◽  
C. Ozsamli ◽  
R. M. Alkan
Keyword(s):  
Carrier Phase ◽  
Test Site ◽  
Gps Data ◽  
Smoothing Algorithm ◽  
Gps Receiver ◽  
Kinematic Positioning ◽  
Gps Positioning ◽  
Positioning Method ◽  
Hydrographic Surveying

The accuracy that can be achieved by a single GPS receiver in stand-alone mode is around 10 metres with SA switched off; this is not adequate for most hydrographic studies. This study aims to improve this level of accuracy using a single geodetic receiver in stand-alone mode by applying a phase smoothing algorithm. The algorithm described in this study requires that the measurements be started from a known point for initialisation. The test site selected for the study is Halic bay, Istanbul. After GPS data were collected on a geodetic point for initialisation, the receiver was moved to a hydrographic vessel and trial measurements were performed along several survey profiles. The position of the vessel was calculated at every epoch using the carrier phase smoothing algorithm. In order to analyse the accuracy of the results, a second receiver collected data on another known point on the seashore during the whole session. The position of the vessel was accurately determined using a kinematic positioning method considering the data collected by both receivers. The results produced show that an accuracy of less than a metre can be achieved using the approach considered in this study.

Tightly-coupled GPS/UWB Integration

2009 ◽  
Vol 63 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Glenn MacGougan ◽  
Kyle O'Keefe ◽  
Richard Klukas
Keyword(s):  
Real Time ◽  
Carrier Phase ◽  
Short Distance ◽  
Coupled System ◽  
Emerging Technology ◽  
Ultra Wideband ◽  
Gps Positioning ◽  
Distance Range ◽  
Static Testing ◽  
Tightly Coupled

Ultra-wideband (UWB) ranging radios, an emerging technology that offers precise, short distance range measurements are investigated as a method to augment carrier-phase GPS positioning. A commercially available UWB ranging system is used in a tightly-coupled GPS and UWB real-time kinematic (RTK) system. The performance of the tightly-coupled system is evaluated in static and kinematic testing. This work demonstrates that UWB errors can be successfully estimated in a real-time filter. The results of static testing show that the integrated solution provides better accuracy, better ability to resolve integer ambiguities and enhanced fixed ambiguity solution availability compared with GPS alone. In kinematic testing in a degraded GPS environment, sub-decimetre accuracy was maintained.

scholarly journals An Algorithm for Combined Code and Carrier Phase Based GPS Positioning

2003 ◽  
Vol 43 (5) ◽  
pp. 915-927 ◽  
Author(s):  
Xiao-Wen Chang ◽  
Christopher C. Paige
Keyword(s):  
Carrier Phase ◽  
Gps Positioning
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