Archives

The New GPS 24+3 Constellation: What Does it Mean to the Surveying and GIS User?

January 19, 2010 - By

Last week, the U.S. Air Force announced it is reconfiguring the GPS constellation. The Air Force is changing the constellation from a 21+3 configuration to a 24+3 configuration. The result will be more satellites in view, on average. This is great news for the GPS surveying and GIS mapping user. In my opinion, it was the only achievable short/medium-term solution to the GPS "brownout" problem that has plagued GPS surveying and mapping users for years, and has worsened in recent months. read more

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

The Federal Radionavigation Plan

January 5, 2010 - By

I’ve intended to write about the 2008 Federal Radionavigation Plan (FRP) for quite some time. It is an important document because it is the official policy document that drives the United States’ radio navigation (including GPS) program planning. According to the FRP, it includes the introductions, policies, radionavigation system user requirements, system descriptions, and operating plans of various radionavigation systems. read more

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

The System: GLONASS Heaves Three Aloft

January 1, 2010 - By

The Russian space agency Roscosmos launched a venerable Proton rocket carrying three GLONASS-M satellites into orbit on December 14. Each 3,000-pound satellite is designed to last seven years. They join a constellation numbering 19 satellites, although only 16 are healthy. Russian politicians and satnav system managers had hoped to launch six satellites between September and December, to attain a global service... read more

Innovation: Collective Detection

January 1, 2010 - By

Enhancing GNSS Receiver Sensitivity by Combining Signals from Multiple Satellites
A new approach to enhancing signal sensitivity combines the received signal power from multiple satellites in a direct-to-navigation solution. read more

This article is tagged with and posted in Algorithms & Methods, Innovation

Out in Front: GPS World, 20 Years Young

January 1, 2010 - By

We celebrate two solid decades of publication! Since 1990, GPS World has provided GPS and then GNSS technical and business information to industry readers and decision-makers around the world. Below are brief memoirs from those who were in at the start. read more

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

On the Edge: Got a Fast Car

January 1, 2010 - By

A team will attempt to shatter the world land speed record, with a GPS/GLONASS receiver riding the controls. read more

This article is tagged with and posted in Road

Letters to the Editor: Smartphone Revolution

January 1, 2010 - By

Readers comment on Frank van Diggelen's article "The Smartphone Revolution" from the December 2009 issue. read more

This article is tagged with and posted in From the Editor