From the Magazine

The Business — February 2015

February 1, 2015By

The Business and Hey, AU sections from the February 2015 issue. Download the PDF. The Business includes: GeoOptics Study Supports GNSS-RO SkyTraq Offers Module for Wearables Ford Autonomous Vehicle On the Way U.S. Army Explores eLoran PNT Briefs Hey, AU: Autonomous Unmanned includes: FAA Grants UAS Exemptions OriginGPS Module Powers Tiny Drone   read more

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

All-Constellation Receiver: GNSS Location Hub for Smartphones with Galileo Support

January 7, 2015By
Norman-O

This tri-band receiver technology, when combined with baseband search and track engines, allows true simultaneous tracking of all current L1 GNSS signals, including GPS, GLONASS, BeiDou, Galileo, Quasi-Zenith Satellite System (QZSS), and satellite-based augmentation systems (SBAS). By Charles Norman and Andreas Warloe, Broadcom Corporation Starting with the first commercial GPS receivers, adding support for incrementally more complex GNSS systems presents significant... read more

The Business — January 2015

January 2, 2015By

The Business section from the January 2015 issue. Download the PDF. Includes: CSR Preparing for Large Indoor Location Market FAA Grants UAS Exemption to Trimble Navigation Leica’s GNSS Unlimited Allows for Upgrades Broadcom Launches Location Hub with Galileo Support for Smartphones SkyTraq GNSS Receiver Module Provides Indoor/Outdoor Positioning Briefs read more

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

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

GPS World Leadership Awards 2014

December 2, 2014By
The 2014 leadership awards, determined by a poll of 40 industry professionals, await the start of the ceremony.

GPS World’s sponsored 2014 Leadership Awards were bestowed in September during ION-GNSS+.  The Leadership Dinner was sponsored by Lockheed Martin, Exelis, Raytheon, and Braxton Technologies. SIGNALS UAVs Revolutionizing Aviation: Exciting Challenges for the PNT Community Sherman Lo, Senior Research Engineer and Associate Investigator (APNT), Stanford University. One of the architects of eLoran and a worldwide thought leader on alternative PNT.... read more

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

The System: eLoran Operational on Eastern UK Coast

December 1, 2014By
Bridge of the Galatea, a GLA vessel that carries a eLoran receiver and conducted tests of the new system.

Back-up to Vulnerable GPS Signals Required for Busy Shipping Lanes The General Lighthouse Authorities (GLAs) of the UK and Ireland announced October 31 the initial operational capability of UK maritime eLoran. Seven differential reference stations now provide additional position, navigation, and timing (PNT) information via low-frequency pulses to ships fitted with eLoran receivers. The service will help ensure they can... read more

Directions 2015: BeiDou Belongs to China, and to the World

December 1, 2014By

By adhering to the principles of independence, openness, compatibility, and gradualness, China is steadily accelerating the construction and development of the BeiDou Navigation Satellite System. The BeiDou System already provides continuous and reliable Full Operational Services to most parts of the Asia-Pacific region. Its positioning, navigation, and timing performance keeps improving, while the deployment for a global constellation is also making progress. The BeiDou System and its products, which are compatible with other navigation satellite systems, have been gradually applied in many sectors and industries related to the national economy and to entering the mass market. read more

This article is tagged with , , , , and posted in From the Magazine, Opinions

Directions 2015: What It Takes to Make a Gold Standard

December 1, 2014By
GPS-directions-Cooley

Last year in my “Directions” article, I emphasized the commitment made by the U.S. government to ensure GPS signals are available to all users, and I shared some of our excitement in the GPS Directorate regarding the modernized capabilities we are developing and fielding. This year I’d like to share with you progress we’ve made in the past 12 months, provide an update on the modernization initiatives, and challenge civil users and receiver companies to innovate and accelerate these modernized capabilities for users worldwide. read more