Performance of DGPS Smartphone Positioning with the Use of P(L1) vs. P(L5) Pseudorange Measurements

Article Forestry

Advances in smartphone positioning in forests: dual-frequency receivers and raw GNSS data

Julian Tomastik et al.

Summary: The study found that the Xiaomi Mi8 smartphone performed well under various conditions and that smartphones are more suitable for dynamic applications under Leaf-on conditions. Post-processing of raw GNSS data yielded variable results.

FORESTRY (2021)

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Article Engineering, Multidisciplinary

Raw GNSS observations from Android smartphones: characteristics and short-baseline RTK positioning performance

Rui Gao et al.

Summary: This study utilizes raw GNSS observations from Android smartphones, constructs a stochastic model, and verifies the feasibility of smartphone-based ambiguity fixing in short-baseline real-time kinematic applications. The research successfully achieves high-precision positioning using low-cost smart devices.

MEASUREMENT SCIENCE AND TECHNOLOGY (2021)

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Article Engineering, Multidisciplinary

An analysis of multi-GNSS observations tracked by recent Android smartphones and smartphone-only relative positioning results

Jacek Paziewski et al.

Summary: This study evaluates the quality of multi-GNSS observations from recent Android smartphones, revealing significant differences in carrier-to-noise density ratio (C/N0) compared to geodetic receivers, as well as differences among constellations and frequencies. Higher satellite elevation leads to larger discrepancies in C/N0 between geodetic receivers and smartphones, suggesting a C/N0 weighting scheme may be more effective than the typical elevation dependent approach. Additionally, observations show noisier code pseudoranges and better code signals on L5 and E5a compared to L1 and E1, respectively.

MEASUREMENT (2021)

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Article Chemistry, Analytical

Observation Quality Assessment and Performance of GNSS Standalone Positioning with Code Pseudoranges of Dual-Frequency Android Smartphones

Umberto Robustelli et al.

Summary: The study evaluates the positioning performance and GNSS observation quality of three recent smartphones (Xiaomi Mi 8, Xiaomi Mi 9, and Huawei P30 Pro), suggesting the use of a C/N-0-dependent function for weighting the observations. It was found that smartphone code signals on L5 and E5a frequency bands have lower noise compared to E1 and L1 ones. Smartphone positioning with E5a code observations outperforms that with E1 signals, with Huawei P30 achieving the best positioning accuracy among the tested devices.

SENSORS (2021)

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Article Environmental Sciences

Improving DGNSS Performance through the Use of Network RTK Corrections

Duojie Weng et al.

Summary: Differential Global Navigation Satellite System (DGNSS) is a system widely used to enhance the accuracy of single-frequency receivers. Conventional DGNSS does not consider distance-dependent errors, but network RTK corrections can improve accuracy for longer baseline lengths. The study demonstrates that using network RTK corrections can significantly improve the accuracy of local-area DGNSS applications in low-latitude regions.

REMOTE SENSING (2021)

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Article Engineering, Multidisciplinary

Practical applicability of processing static, short-observation-time raw GNSS measurements provided by a smartphone under tree vegetation

Julian Tomastik et al.

Summary: By analyzing 10-minute long static GNSS measurements under different conditions, the study confirmed the feasibility of achieving centimeter-level positioning accuracy under open-sky conditions, while vegetation significantly affects positioning performance. Carrier-phase and code-based solutions both have their advantages, but code-based measurements are more important for all smartphones with Android 7 or higher.

MEASUREMENT (2021)

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Article Chemistry, Multidisciplinary

Comparison of Two Approaches to GNSS Positioning Using Code Pseudoranges Generated by Smartphone Device

Massimiliano Pepe et al.

Summary: The study found that smartphones perform comparably in Differential Global Navigation Satellite System and Single Point Positioning, achieving around one meter accuracy in planimetric positioning but with better results in altimetric positioning with DGNSS. Introducing a statistical method to evaluate smartphone positioning accuracy and precision can improve the accuracy of mobile device positioning.

APPLIED SCIENCES-BASEL (2021)

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Article Engineering, Aerospace

Conditioning and PPP processing of smartphone GNSS measurements in realistic environments

Ganga Shinghal et al.

Summary: Smartphones typically use duty-cycled Global Navigation Satellite System (GNSS) L1 code measurements and Single Point Positioning (SPP) processing for position calculation. With the advancement of multi-constellation, dual-frequency GNSS chips in smartphones, Precise Point Positioning (PPP) can be utilized for improved positioning accuracy. However, in realistic environments, smartphones may face challenges such as data gaps and high multipath interference, which can be addressed through techniques like data prediction and improved processing algorithms for PPP.

SATELLITE NAVIGATION (2021)

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Article Engineering, Aerospace

Aircraft positioning using GPS/GLONASS code observations

Kamil Krasuski et al.

AIRCRAFT ENGINEERING AND AEROSPACE TECHNOLOGY (2020)

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Article Engineering, Multidisciplinary

Testing GNSS receiver accuracy in Samsung Galaxy series mobile phones at a sports stadium

Cezary Specht et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2020)

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Article Chemistry, Analytical

A New DGNSS Positioning Infrastructure for Android Smartphones

Duojie Weng et al.

SENSORS (2020)

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Article Environmental Sciences

Characteristics Analysis of Raw Multi-GNSS Measurement from Xiaomi Mi 8 and Positioning Performance Improvement with L5/E5 Frequency in an Urban Environment

Lei Guo et al.

REMOTE SENSING (2020)

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Article Remote Sensing

GNSS code and carrier phase observations of a Huawei P30 smartphone: quality assessment and centimeter-accurate positioning

Lambert Wanninger et al.

GPS SOLUTIONS (2020)

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Article Engineering, Electrical & Electronic

Xiaomi Mi 8 smartphone GNSS data quality analysis and single-frequency RTK positioning performance evaluation

Wei Sun et al.

IET RADAR SONAR AND NAVIGATION (2020)

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Article Environmental Sciences

Estimation of GPS Differential Code Biases Based on Independent Reference Station and Recursive Filter

Liangliang Yuan et al.

REMOTE SENSING (2020)

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Editorial Material Engineering, Multidisciplinary

Recent advances and perspectives for positioning and applications with smartphone GNSS observations

Jacek Paziewski

MEASUREMENT SCIENCE AND TECHNOLOGY (2020)

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Article Chemistry, Multidisciplinary

Assessment of Static Positioning Accuracy Using Low-Cost Smartphone GPS Devices for Geodetic Survey Points' Determination and Monitoring

Marcin Uradzinski et al.

APPLIED SCIENCES-BASEL (2020)

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Article Engineering, Multidisciplinary

Precise point positioning with ambiguity resolution using an external survey-grade antenna enhanced dual-frequency android GNSS data

Qiang Wen et al.

MEASUREMENT (2020)

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Article Engineering, Aerospace

Comparative analysis of positioning accuracy of GNSS receivers of Samsung Galaxy smartphones in marine dynamic measurements

C. Specht et al.

ADVANCES IN SPACE RESEARCH (2019)

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Article Engineering, Aerospace

Towards high accuracy GNSS real-time positioning with smartphones

Paolo Dabove et al.

ADVANCES IN SPACE RESEARCH (2019)

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Article Engineering, Multidisciplinary

Comparative analysis of precise point positioning processing technique with GPS low-cost in different technologies with academic software

Rosendo Romero-Andrade et al.

MEASUREMENT (2019)

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Article Geochemistry & Geophysics

Determination of GNSS pseudo-absolute code biases and their long-term combination

Arturo Villiger et al.

JOURNAL OF GEODESY (2019)

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Article Chemistry, Analytical

Precise Point Positioning Using Dual-Frequency GNSS Observations on Smartphone

Qiong Wu et al.

SENSORS (2019)

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Article Remote Sensing

Signal characterization and assessment of code GNSS positioning with low-power consumption smartphones

Jacek Paziewski et al.

GPS SOLUTIONS (2019)

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Article Environmental Sciences

GPS plus BDS Network Real-Time Differential Positioning Using a Position Domain Estimation Method

Jianhui Cui et al.

REMOTE SENSING (2019)

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Article Geochemistry & Geophysics

On the feasibility of resolving Android GNSS carrier-phase ambiguities

Jianghui Geng et al.

JOURNAL OF GEODESY (2019)

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Article Chemistry, Analytical

Single-Baseline RTK Positioning Using Dual-Frequency GNSS Receivers Inside Smartphones

Paolo Dabove et al.

SENSORS (2019)

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Article Engineering, Aerospace

Quality analysis of multi-GNSS raw observations and a velocity-aided positioning approach based on smartphones

Wanke Liu et al.

ADVANCES IN SPACE RESEARCH (2019)

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Article Remote Sensing

Characterization of GNSS observations from a Nexus 9 Android tablet

Martin Hakansson

GPS SOLUTIONS (2019)

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Article Computer Science, Information Systems

Assessment of Dual Frequency GNSS Observations from a Xiaomi Mi 8 Android Smartphone and Positioning Performance Analysis

Umberto Robustelli et al.

ELECTRONICS (2019)

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Proceedings Paper Remote Sensing

RTK and PPP-RTK Using Smartphones: From Short-Baseline to Long-Baseline Applications

Francesco Darugna et al.

PROCEEDINGS OF THE 32ND INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2019) (2019)

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Article Remote Sensing

Quality assessment of GNSS observations from an Android N smartphone and positioning performance analysis using time-differenced filtering approach

Xiaohong Zhang et al.

GPS SOLUTIONS (2018)

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Article Chemistry, Analytical

Evaluation of a Low Cost Hand Held Unit with GNSS Raw Data Capability and Comparison with an Android Smartphone

Gerard Lachapelle et al.

SENSORS (2018)

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Review Remote Sensing

Review of code and phase biases in multi-GNSS positioning

Martin Hakansson et al.

GPS SOLUTIONS (2017)

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Article Engineering, Marine

Accounting for Inter-System Bias in DGNSS Positioning with GPS/GLONASS/BDS/Galileo

Hui Liu et al.

JOURNAL OF NAVIGATION (2017)

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Article Chemistry, Analytical

Modeling DGNSS Pseudo-Range Correction Messages by Utilizing Satellite Repeat Time

Dong-Hyo Sohn et al.

SENSORS (2017)

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Article Chemistry, Analytical

Precise GNSS Positioning Using Smart Devices

Eugenio Realini et al.

SENSORS (2017)

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Article Computer Science, Information Systems

Accuracy Improvement of DGPS for Low-Cost Single-Frequency Receiver Using Modified Flachen Korrektur Parameter Correction

Jungbeom Kim et al.

ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION (2017)

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Article Chemistry, Analytical

Position Accuracy Improvement by Implementing the DGNSS-CP Algorithm in Smartphones

Donghwan Yoon et al.

SENSORS (2016)

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Article Remote Sensing

First Brazilian Real Time Network DGPS through the Internet: Development, Application and Availability Analyses

D. B. M. Alves et al.

JOURNAL OF GEODETIC SCIENCE (2012)

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Performance of DGPS Smartphone Positioning with the Use of P(L1) vs. P(L5) Pseudorange Measurements

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