From the Magazine

The System: Galileo Turning Ten

September 30, 2015By
Galileo 9 and 10 lift off. (Credit: ESA)

Galileo satellites 9 and 10 are functioning perfectly, and the initial series of flight operations is continuing as part of the critical launch and early orbit phase, according to a European Space Agency Rocket Science blog by Daniel Scuka, senior editor for Spacecraft Operations at ESOC, ESA’s European Space Operations Centre, Darmstadt, Germany. Galileo 9 and 10 lifted off together... read more

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Innovation: Getting There by Tuning In

September 4, 2015By
FIGURE 8. Worst-case result for five-transmitter tracking. (Photo map courtesy of Google.)

Using HD Radio Signals for Navigation By Ananta Vidyarthi, H. Howard Fan and Stewart DeVilbiss THE YEAR WAS 1906. On Christmas Eve of that year, Canadian inventor Reginald Fessenden carried out the first amplitude modulation (AM) radio broadcast of voice and music. He used a high-speed alternator capable of rotating at up to 20,000 revolutions per minute (rpm). Connected to... read more

Receiver Design for the Future

September 3, 2015By
Figure 4. GNSS market segments, cumulative core revenue 
2012–2022. Source: GSA GNSS Market Report.

How the Internet of Things Now Drives Location Technology
The number of devices connecting to the Internet is growing fast. The applications running on them require location context to determine the most likely use case. These devices need continuous location — not necessarily noticed or activated by the user, but always on. The specification that becomes important is energy per day: the device must maintain its location without draining its battery — and increase location availability indoors. That creates new design requirements for hybrid capability. read more

High-Precision Receiver Design: More than Accuracy

September 2, 2015By

Users in emerging applications may have different requirements from traditional high-precision users. Tracking all of the new multi-GNSS signals, and then using the large number of inputs in the positioning engine, drives the amount of processing power and memory required onboard the receiver. These in turn drive the cost, size and power consumption of the receiver in exactly the opposite direction from the expectations of customers. read more

2015 State of the GNSS Industry Report

September 1, 2015By

The 2015 State of the GNSS Industry Report reveals the results of our annual survey of GNSS professionals, covering the state of their business, the economic climate for GNSS products and services, driving market factors, the government’s role in funding and regulating, budgets devoted to R&D, the effects of jamming, and the “Issue of the Year.” Download the 2015 State of the... read more

The Business — September 2015

September 1, 2015By

The Business section from the September 2015 GPS World. Download the PDF. Includes: Locata to Underpin NASA UA Research Center OxTS Creates Locata + Inertial System Rohde & Schwarz Offers Fast Production Testing for Receivers Qualcomm Completes CSR Purchase New Book Covers RF Positioning for GNSS IFEN’s v3.0 of SX3 GNSS Software Receiver Adds Functions Events Briefs read more

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The System: BeiDou Adds Two, Plans Auto Sat Nav

September 1, 2015By

China launched two BeiDou navigation satellites into medium Earth orbit on July 25. The two new satellites, BeiDou-3 M1 and BeiDou-3 M2, are in orbital slots 1 and 6 of Plane 1 (or A Plane), respectively. The satellites are designated BDS M1-S and M2-S — the “S” may stand for “Test” (in Chinese: 试验 = Shiyan). On Aug. 14, China stated... read more

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The Economic Benefits of GPS

September 1, 2015By
Figure 2. U.S. trade in GPS equipment, 2013 (millions of dollars).

This article is based on a presentation to the National Space-Based Positioning, Navigation and Timing Advisory Board in June 2015. The study reported on at the meeting was requested by the National Executive Committee for Space-Based Positioning, Navigation and Timing. It demonstrates the widespread use and importance of GPS to the U.S., with estimated benefits in 2013 of about $56... read more