From the Magazine

Expert Opinions: How many GNSS signals for a consumer-grade device?

December 23, 2015By
Greg-Turetzky-T

Question: What is the optimum number of GNSS signals to include/process in a consumer-grade PNT device? A: A chip should support four signals, being GPS/GLONASS/Galileo/Beidou, but only process two of them — choice depending on region, geopolitical sensitivity, constellation availability — dropping to one to save power when satellite availability is good. Two constellations give enough satellites for accuracy and... read more

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

Sensor fusion: Low-cost, high-end

December 21, 2015By
figure3-0

Integration for infrastructure monitoring, navigation By Desislava Staykova and Nico Zill Rapid development in the technology of combined sensors within complex systems has taken place over the last decade. Such systems provide different accuracy levels, offering the possibility of use in application areas such as surveying, railway and automotive engineering, land administration, and for navigation purposes. Multi-sensor integration and fusion... read more

GPS World 2015 Leadership Award dinner boasts visions for the future

December 16, 2015By
leadership-dinner-4-awards

GPS World‘s Leadership Awards were presented during a sponsored ceremony and dinner at ION GNSS+ 2015 in September in Tampa. The awards recognize significant recent achievement in four fields of position, navigation and timing: satellites, signals, services and products. Nominations came from a group of industry executives and the magazine’s Editorial Advisory Board. Votes were cast by a slightly larger... read more

PPP for hydrography

December 15, 2015By
PPP_opening_O

A new high-accuracy technique using one dual-frequency GNSS receiver, precise point positioning (PPP) offers the possibility of cost-effectively obtaining coordinates. This study investigates the accuracy of kinematic PPP for hydrographic applications on rivers, and shows results comparable to double-difference solutions. read more

Directions 2016: GLONASS priorities — improved accuracy and reliability

December 15, 2015By
Sergey Karutin, GLONASS designer general (left); Nikolay Testoyedov, director general, SC Information Satellite Systems (center); and Andrey Tyulin, director general, SC Russian Space Systems.

At the present stage of GLONASS development, the major research and development foci include not only activities aimed at enhanced accuracy, availability and integrity of navigation, but also theoretical and practical efforts focused at ensuring resilience of navigation (interference mitigation). read more

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

Seen & Heard: GNSS and PNT in the News

December 8, 2015By
seen_heard_map-F

A snapshot of interesting stories involving GNSS and position, navigation and timing (PNT) technology from around the world. read more

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

Research Online: HF beacon navigation, inertial sensors and GNSS-INS integration

December 8, 2015By

HF Beacon Navigation   Navigation using High-Frequency Ground Beacons and Ionosphere Model Corrections, by Yoav Baumgarten and Mark L. Psiaki, Cornell University. A new navigation concept relies on passive one-way ranging using pseudorange measurements of high-frequency (HF) beacon signals reflected off the ionosphere. This is being developed as a possible alternative to GNSS positioning and timing services, with benefits in... read more

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

Expert Opinions: FAA UAV registration requirement

December 8, 2015By

Lydia Bock, Geodetics Inc., and John Studenny, Esterline - CMC Navigation Systems, answer the question, "What do you think of the FAA requirement that all UAV purchasers register their devices?" read more

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