GPS carrier phase measurement method based on data transition detection in high dynamic circumstance

2002 ◽  
Author(s):  
Lee-Lung Cheng ◽  
Zhi-Gang Cao ◽  
Xiao-Min Li
Keyword(s):  
Carrier Phase ◽  
Measurement Method ◽  
Phase Measurement ◽  
Carrier Phase Measurement ◽  
High Dynamic

scholarly journals Performance Improvement of Time-Differenced Carrier Phase Measurement-Based Integrated GPS/INS Considering Noise Correlation

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3084 ◽  
Author(s):  
Jungbeom Kim ◽  
Younsil Kim ◽  
Junesol Song ◽  
Donguk Kim ◽  
Minhuck Park ◽  
...  
Keyword(s):  
Navigation System ◽  
Carrier Phase ◽  
Phase Measurement ◽  
Integrated System ◽  
Integer Ambiguity ◽  
Noise Correlation ◽  
Carrier Phase Measurement ◽  
Phase Measurements ◽  
Performance Improvements ◽  
Global Positioning

In this study, we combined a time-differenced carrier phase (TDCP)-based global positioning system (GPS) with an inertial navigation system (INS) to form an integrated system that appropriately considers noise correlation. The TDCP-based navigation system can determine positions precisely based on high-quality carrier phase measurements without difficulty resolving integer ambiguity. Because the TDCP system contains current and previous information that violate the format of the conventional Kalman filter, a delayed state filter that considers the correlation between process and measurement noise is utilized to improve the accuracy and reliability of the TDCP-based GPS/INS. The results of a dynamic simulation and an experiment conducted to verify the efficacy of the proposed system indicate that it can achieve performance improvements of up to 70% and 60%, respectively, compared to the conventional algorithm.

Ambiguity Function Method Scheme for Aircraft Attitude Sensor Utilising GPS/GLONASS Carrier Phase Measurement

2009 ◽  
Vol 59 (5) ◽  
pp. 466-470 ◽  
Author(s):  
Wenrui Jin ◽  
Chuanrun Zhai ◽  
Liduan Wang ◽  
Yanhua Zhang ◽  
Xingqun Zhan
Keyword(s):  
Carrier Phase ◽  
Function Method ◽  
Phase Measurement ◽  
Ambiguity Function ◽  
Carrier Phase Measurement ◽  
Attitude Sensor

The Research of Multipath and Linear Error for Pseudolites Applications

2011 ◽  
Vol 130-134 ◽  
pp. 2890-2893 ◽  
Author(s):  
Xiao Guang Wan ◽  
Xing Qun Zhan
Keyword(s):  
Carrier Phase ◽  
Indoor Environment ◽  
Phase Measurement ◽  
Satellite System ◽  
Independent System ◽  
Carrier Phase Measurement ◽  
Wide Range ◽  
Positioning Method ◽  
Global Navigation Satellite ◽  
Is Design

Pseudolites are ground-based transmitters that send global navigation satellite system like signals, such as GPS, GLONASS, or Galileo. As an independent system for indoor positioning, pseudolites technique can be explored for a wide range of positioning and navigation application where the signal of satellite GNSS can’t be received. However, with indoor environment, the positioning method of pseudolite navigation system is not entirely same as GNSS, and there are some challenging issues in research and system design. In this paper, a signal difference carrier phase measurement system with pseudolites is design. Furthermore, two major problems are studied that they are multipath error and linear errors.

scholarly journals Improving the Accuracy of Regional Ionospheric Mapping with Double-Difference Carrier Phase Measurement

2019 ◽  
Vol 11 (16) ◽  
pp. 1849 ◽  
Author(s):  
Deokhwa Han ◽  
Donguk Kim ◽  
Junesol Song ◽  
Changdon Kee
Keyword(s):  
Carrier Phase ◽  
Phase Measurement ◽  
Real Data ◽  
Satellite System ◽  
Large Error ◽  
Reference Station ◽  
Double Difference ◽  
Carrier Phase Measurement ◽  
Ionospheric Modeling ◽  
Regional Augmentation

Regional augmentation systems for a global navigation satellite system (GNSS) provide an ionospheric map correction to the user in order to remove the ionospheric delay error. Measurements are collected from multiple reference stations to estimate the ionospheric map. During this process, the pseudorange measurement error of a reference station causes an error in the correction, which is more evident at edge areas and causes a large error for low-elevation satellites. In this study, an ionospheric modeling algorithm was developed that uses the carrier phase with the pseudorange to greatly reduce the error. The integer-resolved double-difference carrier phase can be obtained through ambiguity resolution method, and the measurement is directly utilized in ionospheric modeling. The performance of the developed method was tested in simulations and with real data for validation. The results of users at various locations showed that the method effectively improved the accuracy of the correction.

scholarly journals Carrier Phase Measurement in IRNSS using Antenna swapping Method

2019 ◽  
Vol 8 (3) ◽  
pp. 1685-1688
Keyword(s):  
Carrier Frequency ◽  
Carrier Phase ◽  
Phase Measurement ◽  
Satellite System ◽  
Space Research ◽  
Integer Ambiguity ◽  
Navigation Satellite ◽  
Carrier Phase Measurement ◽  
Accurate Position

Indian has been established its regional navigational satellite system i.e., IRNSS (Indian space research navigation satellite system). It is launched successfully with seven satellites. It provide accurate position to user in Indian and up to 1500km around the India. In this paper, calculated the integer ambiguity (N) which is one of the parameter of the carrier phase measurement. Carrier phase measurement is measure the range between the satellite and receiver expressed units of cycle of the carrier frequency.

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