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Contributing Writers

Gérard Lachapelle


Gérard Lachapelle, Professor Emeritus, held the CRC/iCORE Chair in Wireless Location and is a former head of the Department of Geomatics Engineering at the University of Calgary in Alberta, Canada.

During the past two decades, Prof. Lachapelle has built up the University of Calgary research group to be one of the top academic GNSS groups in the world.

He has been involved with GNSS since 1980, and has received numerous awards for his contributions in the area of differential kinematic GPS and indoor location.

As a result of his work, several software packages have been developed and are being licensed to industrial and government groups through University Technologies International, a wholly-owned subsidiary of the University of Calgary.

The many applications of satellite positioning in which Dr. Lachapelle has been involved include precision farming, aircraft-to-aircraft positioning, vehicular navigation, shipborne positioning and attitude determination.

January/February 2018

How Effective Are Signal Quality Monitoring Techniques

May/June 2016

Listening for RF Noise

January/February 2014

Ionospheric Scintillation

March/April 2011

Coherent Integration Time Limits

September/October 2009

The Soft Approach

May/June 2008

What about WAAS Functions and Differential Biases?

March/April 2008

Mathematical Models and GNSS Interference

January/February 2008

MEMS and Platform Orientation & Deep Integration of GNSS/Inertial Systems

November/December 2007

Galileo Open Service and Weak Signal Acquisition

September/October 2007

eLoran and Signal Reception Under Snow

July/August 2007

Backing Up GNSS with Laser Radar & INS, RAIM in the City, Antenna Phase Wind-Up

May/June 2007

Host-Based Processing and Choosing Inertial Sensors

March/April 2007

Signal Acquisition and Search, and Antenna Polarization

January/February 2007

Weighting GNSS Observations and Variations of GNSS/INS Integration

November/December 2006

Precise Point Positioning and Its Challenges, Aided-GNSS and Signal Tracking

October 2006

A New Version of the RTCM SC-106 Standard, the Probability of Solving Integer Ambiguities

September 2006

Atomic Clocks on Satellites and Mitigating Multipath

July/August 2006

Orbital Precession, Optimal Dual-Frequency Techniques, and Galileo Receivers

May/June 2006

New GNSS Frequencies, Advantages of M-Code, and the Benefits of a Solitary Galileo Satellite

April 2006

Adaptive Antenna Arrays, Multi-GNSS Tropospheric Monitoring, and High-Dynamic Receivers

March 2006

Carrier Phase Ambiguity Resolution, GNSS Use In Cellular Telephone Systems, and New Antennas?

January/February 2006

Reference Systems, UTC Leap Second, and L2C Receivers?

Jammer Dectector
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