January 7, 2015By
BDS coverage area

First of all, on behalf of all of us here at GPS World magazine, allow me to welcome you to 2015. We wish you a healthy and prosperous new year! I’d like to start out the new year stating the obvious for some of you, maybe most of you…perhaps all of you: GNSS is the new GPS. In the high-precision... read more

This article is tagged with and posted in Opinions, Survey

Expert Advice: Loose Coupling — And What’s Wrong With It

January 2, 2015By

Concerns raised about cascaded Kalman filters for loose coupling and/or usage of input data “massaged” in unknown ways are not new, but are routinely excused by requirements to use coordinates from receivers not providing measurement outputs. Often, however, a receiver’s internal 8-state extended Kalman filter (EKF) is not fed with precise carrier phase data — and even when it is, its velocity outputs (being both filtered and unaided) have limited ability to follow high dynamics. Velocity pseudomeasurements under those conditions interfere with IMU aiding. read more

Out in Front: All-Day, Everywhere for All

January 1, 2015By

We appear incompletely before you this month. A funny thing happened on the way to the presses: we discovered that we had more content than pages in which to squeeze it. “All the news that fits to print,” the motto of the New York Times, can in this instance not be ours. All the news just won’t fit! First to... read more

This article is tagged with , , , , and posted in OEM, Opinions

An Early Gift from — and for — Galileo

December 19, 2014By

They said it wasn’t possible — well to be frank, I said it wasn’t possible – but one of the two “misplaced” Galileo satellites, plucky Doresa, has delivered an early Christmas present to the European GNSS community by providing a first fix on Tuesday, December 9. The signal was received at the European Space Agency’s (ESA’s) technical centre in Noordwijk,... read more

2014: Big Move to Retail Indoor Location Market

December 18, 2014By

This year was filled with hope and some success for the location industry. In what was probably the biggest deal, Qualcomm bought United Kingdom-based CSR for $2.5 billion — at the same time, spinning off its own location beacon company, Gimbal. While the connected car continued to get a lot of press at the biggest trade shows, indoor location technology... read more

Industry Battles Indoor Location Rules

December 18, 2014By

The FCC will soon make a ruling on indoor location rules for 911 calls. If you worked in the location industry in the late 1990s, you may remember when the FCC ruled that wireless carriers would have to automatically locate a mobile phone that dialed 911 from the outdoors. read more

This article is tagged with , , , , and posted in Mobile, Opinions

Reflections and Hope for GNSS

December 10, 2014By

2014 marks 40 years of my long association with the positioning, navigation and timing gold standard we call GPS. There’s no question that GPS or GNSS should remain as the bedrock for all PNT solutions. Three technologies that can build on GNSS are eLoran, inertial systems, and all signals available. read more

This article is tagged with and posted in Defense, Opinions