Survey and Mapping Archives - Page 20 of 29 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

January 24, 2012

SIDEBAR: GNSS Attitude Determination on the Fly

Return to main article: "Winging It"

GNSS technology is used in various ways to find attitude or trajectory. The simplest method relies on measuring the velocity of a single receiver and interpreting the direction of that vector as the vehicle’s heading.

This works for applications where a vehicle’s motion is constrained to only one axis – either absolutely, as with a train, or in the typical case of a car — when being driven responsibly!

By Inside GNSS

SIDEBAR: In-Office Data Processing and Analysis

Return to main article: "Winging It"

With high-quality data sets obtained in the foot-to-foot configuration, we set about on postprocessing the data to extract more information about the NovAtel wingsuit system’s performance in the free-fall environment.

This was a multi-step process involving several NovAtel utilities and techniques, which we will describe here.

By Inside GNSS

January 16, 2012

FIG /IAG Technical Seminar: Reference Frame in Practice

Monte Mario, the highest hill in Rome

A special seminar for geodesists will take place in Rome, Italy on May 4 and 5, just before the 35th FIG general assembly and working week.

The conference venue is the Cavalieri hotel on Monte Mario near the Vatican.

It is organized by the International Association of Geodesy (IAG), the surveyors’ international association (FIG) and the UN’s International Committee on GNSS (ICG).

By Inside GNSS

November 22, 2011

Figures 1, 2 & 3: Network RTK and Reference Station Configuration

Return to main article: “Network RTK and Reference Station Configuration”

By Inside GNSS

November 16, 2011

Network RTK and Reference Station Configuration

Q: What effect does network size have on NRTK positioning?

A: Network real-time kinematic (NRTK) positioning is nowadays a very common practice, not only in academia but also in the professional world. In the last 10 years, several networks of continuous operating reference stations (CORSs) were created to support users. These networks offer real-time services for NRTK positioning, providing centimeter-level positioning accuracy with an average distance of 25–35 kilometers between the reference stations.

By Inside GNSS

The Digital TV Case

Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.

By Inside GNSS

September 30, 2011

High-Precision GNSS Market Set to Increase Almost 100% by 2016, Study Predicts

Following a difficult 2009, the precision GNSS market is moving into a new period of sustained growth, resulting in a near doubling of shipments and revenues by 2016, according to recently completed study by ABI Research.

By Inside GNSS

September 13, 2011

Mark Greaves

Mark Greaves is one of two geodetic analysts at Ordnance Survey.

He holds an M.Sc. in engineering surveying and geodesy and is a member of the Royal Institute of Chartered Surveyors.

Greaves specializes in geodetic GNSS computations and analysis. He has worked at Ordnance Survey for almost 25 years during which time he has been responsible for several national GNSS network adjustments, including two internationally ratified realizations of the ETRS89 coordinate reference system in Great Britain.

By Inside GNSS

Paul Cruddace

Paul Cruddace is the geodesy and positioning manager at Ordnance Survey, Great Britain’s national mapping agency.

He is responsible for the development and implementation of the overall strategy including the national GNSS infrastructure.

Cruddace is a chartered surveyor with a background in the use of precise GPS positioning to determine earthquake hazards.

By Inside GNSS

September 8, 2011

A Comprehensive Reference for OPUS

CORS and OPUS for Engineers
Edited by Tomás Soler
PUBLISHED BY THE AMERICAN SOCIETY OF CIVIL ENGINEERS

By Inside GNSS

August 26, 2011

Trimble Launches New OEM GNSS Modules, Enclosure

Trimble BD920

Trimble has introduced two new GNSS OEM modules, the BD910 and BD920, featuring centimeter-level, real-time kinematic (RTK) positioning capabilities optimized for high-precision and control applications.

The BD910 and BD920 modules are designed to allow OEMs and system integrators to easily add centimeter-level positioning to specialized or custom hardware solutions.

By Inside GNSS

August 4, 2011

New Video Contest Seeks Short Clips of Topcon Products In Use

Do you use Topcon products in your daily life and work? If so, Topcon invites you to pick up your cell, your video camera or any other video recording device and show them what you do and how you do it.

Send in your two minute clip by October 1 – just point and shoot and upload, the company says.

By Inside GNSS