Richard B. Langley

Richard B. Langley, Ivan Smolyakov, Mohammad Rezaee, 2019, Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019).

Phase Wind-Up Analysis: Assessing Real-Time Kinematic Performance

Richard B. Langley, Luis Serrano, Don Kim, 2006 .

GLONASS: Revisión y actualización

Richard B. Langley, 1996 .

Evaluation of the New WAAS L5 Signal

Richard B. Langley, Hyunho Rho, R. Langley, 2008 .

Adaptive Algorithm for Low-cost Single-frequency Positioning in Urban Environments: Design and Performance Analysis

Richard B. Langley, Ivan Smolyakov, 2018 .

Monitoring the Ionosphere Using Integer-Leveled GLONASS Measurements

Richard B. Langley, Simon Banville, R. Langley, 2015 .

The Canada-Wide Differential GPS Service: Initial Performance

Richard B. Langley, Hyunho Rho, A. Kassam, 2003 .

Erratum to “GPS receiver code bias estimation: A comparison of two methods” [Adv. Space Res. 59 (2017) 1984–1991]

Richard B. Langley, Anthony M. McCaffrey, P. T. Jayachandran, 2017 .

On Ultrahigh-Precision GPS Positioning and Navigation

Richard B. Langley, Donghyun Kim, R. Langley, 2002 .

GAPS: The GPS Analysis and Positioning Software - A Brief Overview

Richard B. Langley, Marcelo C. Santos, Rodrigo Leandro, 2007 .

Wide Area Neutral Atmosphere Models for GNSS Applications

Richard B. Langley, Marcelo C. Santos, Rodrigo F. Leandro, 2006 .

Resilient multipath prediction and detection architecture for low‐cost navigation in challenging urban areas

Richard B. Langley, Ivan Smolyakov, Mohammad Rezaee, 2020, NAVIGATION.

PRECISE A POSTERIORI GEOMETRIC TRACKING OF LOW EARTH ORBITERS WITH GPS

Richard B. Langley, S. B. Bisnath, R. Langley, 1999 .

Dual-Mode GPS Real-Time Kinematic System for Seamless Ultrahigh-Precision Positioning and Navigation

Richard B. Langley, Donghyun Kim, 2003 .

Intelligent Navigation in Urban Environments Based on an H-infinity Filter and Reinforcement Learning Algorithms

Richard B. Langley, Ivan Smolyakov, 2020, 2020 IEEE/ION Position, Location and Navigation Symposium (PLANS).

CASSIOPE orbit and attitude determination using commercial off-the-shelf GPS receivers

Richard B. Langley, Oliver Montenbruck, André Hauschild, 2019, GPS Solutions.

High-Precision Single-Frequency GPS Point Positioning

Richard B. Langley, Donghyun Kim, Tomas Beran, 2003 .

US Air Force puts more power into GPS Block IIR-M C/A-code

Peter Steigenberger, Richard B. Langley, Steffen Thoelert, 2017 .

A Single GPS Receiver as a Real-Time, Accurate Velocity and Acceleration Sensor

Richard B. Langley, Luis Serrano, Don Kim, 2004 .

GPS IIR-M L1 Transmit Power Redistribution: Analysis of GNSS Receiver and High-Gain Antenna Data

Peter Steigenberger, Richard B. Langley, Steffen Thoelert, 2018 .

UNB3m_pack: a neutral atmosphere delay package for radiometric space techniques

Richard B. Langley, Marcelo C. Santos, Rodrigo Leandro, 2008 .

A GPS Velocity Sensor: How Accurate Can It Be? - A First Look

Richard B. Langley, Sophia Antipolis, Donghyun Kim, 2004 .

Continuous Environment Mapping for Enhanced Low-cost Urban Navigation

Richard B. Langley, Evgeny Klochikhin, Ivan Smolyakov, 2018 .

Instantaneous Cycle‐Slip Correction for Real‐Time PPP Applications

Richard B. Langley, Simon Banville, R. Langley, 2010 .

Compensation of the Effects of Phase Wind-up for Improving the Performance of a GPS RTK-Based Vehicle Navigation System

Richard B. Langley, Don Kim, Luis Serrano, 2005 .

Dual-frequency GPS Precise Point Positioning with WADGPS Corrections

Richard B. Langley, Hyunho Rho, 2005 .

High-Accuracy Point Positioning with Low-Cost GPS Receivers: How Good Can It Get?

Richard B. Langley, Tomas Beran, Sunil Bisnath, 2005 .

Global Assessment of UNB’s Online Precise Point Positioning Software

Richard B. Langley, Marcelo C. Santos, Landon Urquhart, 2014 .

An Improved Ionospheric Modeling Technique Using GPS and Empirical-Orthogonal-Function Fits

Wei Zhang, Richard B. Langley, Attila Komjathy, 2015 .

On the Accuracy of the GPS L2 Observable for Ionospheric Monitoring

Richard B. Langley, Jean-Marie Sleewaegen, Anthony M. McCaffrey, 2018 .

Flight Results of GPS-Based Attitude Determination for the Canadian CASSIOPE Satellite

Richard B. Langley, Oliver Montenbruck, André Hauschild, 2020 .

Mitigating the impact of ionospheric cycle slips in GNSS observations

Richard B. Langley, Simon Banville, R. Langley, 2013, Journal of Geodesy.

Analyzing GNSS data in precise point positioning software

Richard B. Langley, Marcelo C. Santos, Rodrigo Leandro, 2011 .

A Reliable Approach for Ambiguity Resolution in Real-Time Long-Baseline Kinematic GPS Applications

Richard B. Langley, Donghyun Kim, R. Langley, 2000 .

Performance of Long-Baseline Real-Time Kinematic Applications by Improving Tropospheric Delay Modeling

Richard B. Langley, Sunil Bisnath, Peter Dare, 2004 .

Constellation completed: QZS-3 and QZS-4 join the Quasi-Zenith Satellite System

Peter Steigenberger, Oliver Montenbruck, Richard B. Langley, 2018 .

Analysis of GPS L2C Signal Quality and its Impact on PPP Performance

Richard B. Langley, Rodrigo Leandro, Liliana Sukeova, 2008 .

The Usefulness of Internet-based (NTrip) RTK for Navigation and Intelligent Transportation Systems

Richard B. Langley, Marcin Uradzinski, Don Kim, 2008 .

Second QZSS Signal on Air

Peter Steigenberger, Oliver Montenbruck, Richard B. Langley, 2017 .

Satellite and Receiver Phase Bias Calibration for Undifferenced Ambiguity Resolution

Richard B. Langley, Rock Santerre, Simon Banville, 2008 .

Eliminating Potential Errors Caused by the Thin Shell Assumption: An Extended 3D UNB Ionospheric Modelling Technique

Richard B. Langley, Attila Komjathy, Simon Banville, 2013 .

GPS L2C Signal Quality Analysis

Richard B. Langley, Marcelo C. Santos, Felipe G. Nievinski, 2007 .

GPS receiver CODE bias estimation: A comparison of two methods

Richard B. Langley, Anthony M. McCaffrey, P. T. Jayachandran, 2017 .

Navigation 101: basic navigation with a GPS receiver

Richard B. Langley, 2000 .

Propagation of the GPS Signals

Richard B. Langley, R. Langley, 1998 .

Precise, Efficient GPS-Based Geometric Tkacking of Low Earth Orbiters

Richard B. Langley, Sunil B. Bisnath, 1999 .

Galileo IOV-3 Broadcasts E1, E5, E6 Signals

Oliver Montenbruck, Richard B. Langley, 2013 .

KALMAN-FILTER-BASED GPS AMBIGUITY RESOLUTION FOR REAL-TIME LONG-BASELINE KINEMATIC APPLICATIONS

Richard B. Langley, K. Donghyun, 2000 .

Multipath adaptive filtering in GNSS/RTK-based machine automation applications

Richard B. Langley, Luis Serrano, Don Kim, 2010, IEEE/ION Position, Location and Navigation Symposium.

Instantaneous real-time cycle-slip correction for quality control of GPS carrier-phase measurements

Donghyun Kim, Richard B. Langley, Donghyun Kim, 2002 .

Analysis of the Interoperability of the GPS and Galileo Ionosphere Models

Richard B. Langley, Roberto Prieto-Cerdeira, Hyunho Rho, 2017 .

SHIPYARD GIANTS : HIGH-PRECISION CRANE GUIDANCE

Richard B. Langley, Sanling Kim, D Kim, 2002 .

Analyzing the Dynamic Behavior of Suspension Bridge Towers Using GPS

Ricardo Ernesto Schaal, Richard B. Langley, Ana Paula Camargo Larocca, 2006 .

First Results: Precise Positioning with Galileo Prototype Satellites

Richard B. Langley, S. Banville, P. Steigenberger, 2012 .

The 2013 Chelyabinsk meteor ionospheric impact studied using GPS measurements

Richard B. Langley, Yu-Ming Yang, Anthony J. Mannucci, 2014 .

Pseudorange Multipath Mitigation By Means of Multipath Monitoring and De-Weighting

Richard B. Langley, R. Langley, S. Bisnath, 2001 .

Nullification of Differential Ionospheric Delay for Long-Baseline Real-Time Kinematic Applications

Richard B. Langley, Don Kim, R. Langley, 2005 .

Canadian High Arctic Ionospheric Network (CHAIN)

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2009 .

GPS and the Internet

Richard B. Langley, 1995 .

Improved amplitude- and phase-scintillation indices derived from wavelet detrended high-latitude GPS data

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2012, GPS Solutions.

GPS, the Ionosphere, and the Solar Maximum

Richard B. Langley, R. Langley, 2000 .

SBAS Ionospheric Modeling with the Quadratic Approach: Reducing the Risks

Richard B. Langley, Hyunho Rho, R. Langley, 2005 .

GPS Ambiguity Resolution and Validation: Methodologies, Trends and Issues

Richard B. Langley, R. Langley, Donghyun Kim, 2000 .

Ionosphere-Nullification Technique for Long-Baseline Real-Time Kinematic Applications

Richard B. Langley, R. Langley, Donghyun Kim, 2007 .

GPS Receiver System Noise

Richard B. Langley, R. Langley, 2010 .

Estimating the Residual Tropospheric Delay for Airborne Differential GPS Positioning (A Summary)

Richard B. Langley, R. Langley, J. Collins, 1997 .

An Assessment of Predicted and Measured Ionospheric Total Electron Content Using a Regional GPS Network

Richard B. Langley, Attila Komjathy, R. Langley, 1996 .

Mitigation of GPS Carrier Phase Multipath Effects in Real-Time Kinematic Applications

Richard B. Langley, R. Langley, Donghyun Kim, 2001 .

Estimation of the Stochastic Model for Long- Baseline Kinematic GPS Applications

Richard B. Langley, R. Langley, Donghyun Kim, 2001 .

NMEA 0183 : A GPS Receiver Interface Standard

Richard B. Langley, R. Langley, 2004 .

The Low-latitude Ionosphere: Monitoring its Behaviour with GPS

Richard B. Langley, Attila Komjathy, Marcelo C. Santos, 2001 .

Precise Orbit Determination of Low Earth Orbiters with GPS Point Positioning

Richard B. Langley, R. Langley, S. Bisnath, 2001 .

GPS IIR-M L1 Transmit Power Redistribution: Analysis of GNSS Receiver and High-Gain Antenna Data

Peter Steigenberger, Richard B. Langley, Steffen Thoelert, 2017, Navigation.

Tropospheric Delay : Prediction for the WAAS User

Paul Collins, Richard B. Langley, .

The Effect of Tropospheric Propagation Delay Errors in Airborne GPS Precise Positioning

Richard B. Langley, V. B. Mendes, R. Langley, 1995 .

A Primer on GPS Antennas

Richard B. Langley, 1998 .

GPS L 2 C Signal Quality Analysis

Richard B. Langley, Marcelo C. Santos, Rodrigo F. Leandro, 2007 .

Assessment of Atmospheric Delay Correction Models for the Japanese MSAS

Richard B. Langley, Sunil Bisnath, Mami Ueno, 2001 .

Qualification of a Commercial Dual-Frequency GPS Receiver for the e-POP Platform

Oliver Montenbruck, Richard B. Langley, M. Markgraf, 2004 .

Long Baseline GPS RTK Performance in a Marine Environment using NWP Ray-Tracing Technique under Varying Tropospheric Conditions

Richard B. Langley, Peter Dare, Don Kim, 2005 .

Defining the Basis of an Integer-Levelling Procedure for Estimating Slant Total Electron Content

Richard B. Langley, Simon Banville, R. Langley, 2011 .

Real-time GPS landslide monitoring under poor satellite visibility

Richard B. Langley, Mami Ueno, Kenji Itani, 2003 .

Performance Evaluation of Integrated GPS/GIOVE Precise Point Positioning

Oliver Montenbruck, Richard B. Langley, André Hauschild, 2010 .

Ingesting GPS-derived TEC data into the International Reference Ionosphere for single frequency radar altimeter ionospheric delay corrections

Richard B. Langley, A. Komjathy, R. Langley, 1998 .

The residual tropospheric propagation delay: How bad can it get?

Richard B. Langley, J. Paul Collins, 1998 .

Comparison of Measurements of Atmospheric Wet Delay by Radiosonde, Water Vapor Radiometer, GPS, and VLBI

Richard B. Langley, A. E. Niell, A. J. Coster, 2001 .

EFFECTS OF TROPOSPHERIC MAPPING FUNCTIONS ON SPACE GEODETIC DATA

Richard B. Langley, V. B. Mendes, Sunil B. Bisnath, 1997 .

The UTM Grid System

Richard B. Langley, R. Langley, 2022 .

The Usefulness of WADGPS Satellite Orbit and Clock Corrections for Dual-Frequency Precise Point Positioning

Richard B. Langley, Hyunho Rho, 2007 .

Local deformation monitoring using GPS in an open pit mine: initial study

Richard B. Langley, Adam Chrzanowski, R. Langley, 2003 .

Analysis of tropospheric delay prediction models: comparisons with ray-tracing and implications for GPS relative positioning

Richard B. Langley, H. W. Janes, S. P. Newby, 1991 .

Tropospheric Propagation Delay: A Bibliography

Richard B. Langley, R. Langley, W. Wells, 1995 .

Tropospheric Zenith Delay Prediction Accuracy for High-Precision GPS Positioning and Navigation

Richard B. Langley, V. B. Mendes, R. Langley, 1999 .

A North America Wide Area Neutral Atmosphere Model for GNSS Applications

Richard B. Langley, Marcelo C. Santos, Rodrigo Leandro, 2009 .

A GPS GLOSSARY.

Richard B. Langley, 1995 .

An Evaluation of the Accuracy of Models for the Determination of the Weighted Mean Temperature of the Atmosphere

Richard B. Langley, V. B. Mendes, R. Langley, 2000 .

A search space optimization technique for improving ambiguity resolution and computational efficiency

Richard B. Langley, R. Langley, Donghyun Kim, 2000 .

The Mathematics of GPS

Richard B. Langley, 2005 .

Real-Time Multipath Calibration of a GPS-Based Heading Reference System

Richard B. Langley, Luis Serrano, Don Kim, 2007 .

Determining receiver biases in GPS-derived total electron content in the auroral oval and polar cap region using ionosonde measurements

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2011, 2011 XXXth URSI General Assembly and Scientific Symposium.

Long-Range Single-Baseline RTK for Complementing Network-Based RTK

Richard B. Langley, Don Kim, R. Langley, 2007 .

High-Precision Platform Positioning with a Single GPS Receiver

Richard B. Langley, Sunil B. Bisnath, 2001 .

A New Approach to an Old Problem Carrier-Phase Cycle Slips

Richard B. Langley, Sunil B. Bisnath, Donghyun Kim, 2001 .

The Effect of Gradients in the GPS Estimation of Tropospheric Water Vapor

Richard B. Langley, A. E. Niell, A. J. Coster, 1997 .

GPS Receivers and the Observables

Richard B. Langley, R. Langley, 1998 .

Near Real-Time Carrier-Phase Multipath Mitigation in Kinematic Applications, Using a Dual-Antenna System and Effective Close Range Reflectors

Richard B. Langley, Luis Serrano, Donghyun Kim, 2006 .

The nature of GPS differential receiver bias variability: An examination in the polar cap region

Richard B. Langley, P. T. Jayachandran, David R. Themens, 2015 .

An analysis of high-accuracy tropospheric delay mapping functions

Richard B. Langley, V. B. Mendes, 2000 .

Use of varying shell heights derived from ionosonde data in calculating vertical total electron content (TEC) using GPS – New method

Richard B. Langley, John W. MacDougall, P. T. Jayachandran, 2009 .

Improvement of a Global Ionospheric Model to Provide Ionospheric Range Error Corrections for Single-frequency GPS Users

Richard B. Langley, Attila Komjathy, R. Langley, 1996 .

Handling cycle slips in GPS data during ionospheric plasma bubble events

Richard B. Langley, S. Banville, T. Yoshihara, 2010 .