Opinions

Expert Advice: The Strategic Significance of Compass

December 1, 2010By

On November 1, 2010, China’s state news agency reported that the sixth Compass satellite was launched from the Xichang Satellite Launch Center. This was the fourth Compass satellite put into orbit this year, following launches in January, June, and August. Joining the United States, Russia, and the European Union, China is deploying is own global navigation satellite system of five geosynchronous satellites, 27 in medium Earth orbit (MEO) and three in highly inclined geosynchronous orbits (IGSO). Sometimes referred to as Beidou-2, Compass is a global RNSS (radio-navigation satellite system) that broadcasts one-way precision time signals to enable receivers to calculate their position. An earlier Chinese satellite navigation system, Beidou-1, was an RDSS (radio-determination satellite system) that provided regional coverage and required two satellites to get a position fix using two-way communications with a centralized ground station. read more

This article is tagged with and posted in BeiDou/Compass, Expert Advice & Leadership Talks, GNSS, Opinions

Out in Front: One and One

December 1, 2010By

Two figures for your holiday mulling here. I keep putting one and one together, and coming up with three. The first one points to a value of $1,000 billion. Or, as we like to say, one trillion dollars. That has a nice ring to it. The second one hovers at a lower level, around $230 billion, not nearly as melodic as the first. But if the second one creates the first one, how much magic is there in that — do you see what I’m saying? read more

This article is tagged with and posted in From the Editor, Galileo, GNSS Opinions

What Do Your Colleagues Think? Part 2

November 28, 2010By

In my last column, I presented the poll results from my November 16 webinar "A Buyer's Guide to GPS/GIS Mapping Equipment." I've conducted many webinars over the years, and the audiences have been comprised of hundreds (if not thousands) of participants who have the ability to ask questions and also participate on various polls I conduct during the webinars. This column continues the look back at previous polls conducted during my various webinars. read more

This article is tagged with and posted in Newsletter Editorials, Opinions, Survey, Survey Scene

What Do Your Colleagues Think?

November 23, 2010By

Over the past several years, I've conducted many webinars on different GPS/GNSS and other geospatial technologies. The audiences have been comprised of hundreds (if not thousands) of participants who have the ability to ask questions and also participate on various polls I conduct during the webinars.The poll results are a powerful tool that illustrates what your colleagues think about GPS/GNSS, their field practices and general attitude about geospatial technology. read more

This article is tagged with and posted in Newsletter Editorials, Opinions, Survey, Survey Scene

Galileo from the Top: Interview with the EC’s Paul Verhoef

November 20, 2010By

Paul Verhoef, the European Commission’s program manager for European Union (EU) satellite navigation programs — namely Galileo — discussed current issues at some length with GPS World, in a conversation on November 10. He addressed aspects of interoperability with GPS and prospects for further development in that area, the need for an ongoing political commitment by the EU to Galileo, the challenges of financing, the prospects for an 18-satellite constellation (which he dismisses as unrealistic), military considerations for both Galileo and GPS, and the recent uncertainty around Galileo’s Public Regulated Service. read more

This article is tagged with and posted in Expert Advice & Leadership Talks, Galileo, GNSS Opinions

Out in Front: An Open or Shut Case

November 1, 2010By

Engineers are an eager lot, by and large. They like talking about their work, openly showing information and results, testing their work against data and alternate hypotheses, getting feedback and even critique from colleagues near and far. They value an iterative, elaborative, collaborative process. Politicians and business managers, on the other hand, tend to the dour. They would rather not show their hand, nor do they care to hear what you think of their organization’s work, citing intellectual property or national security reasons. read more

This article is tagged with and posted in From the Editor

Expert Advice: Block IIR Lifetimes and GPS Sustainment

November 1, 2010By

In 2009, a Government Accountability Office (GAO) report claimed that the GPS constellation was extremely vulnerable to failure, and a recent September 2010 GAO follow-up continues to make that assertion. In this article, we present the technical data to contradict some of the GAO report conclusions. read more

This article is tagged with and posted in Expert Advice & Leadership Talks, GNSS, GPS Modernization, Opinions

SBAS (WAAS) and NDGPS Accuracy and Statistics

October 21, 2010By

There's something I've been wanting to write about since the ION-GNSS conference a few weeks ago. However, a nasty cold, a 10-day trip to Europe (INTERGEO conference), and some jet lag have kept me from it until now. read more

This article is tagged with and posted in Newsletter Editorials, Opinions, Survey, Survey Scene