Skip to content

Archives

Multifilar antennas target improved autonomous performance

February 9, 2018 - By

By Oliver Leisten Technical Director, Helix Technologies Ltd. To attain the 10-centimeter accuracy required for autonomous vehicle positioning within urban multipath propagation conditions, there is a need for a significant upgrade in GNSS antenna performance. The autonomous vehicle application demands excellent antenna performance together with exploitation of the full set of GNSS multi-frequency and multi-constellation system advances to deliver this... read more

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

Innovation: QZS-3 and QZS-4 join the Quasi-Zenith Satellite System

February 9, 2018 - By , , , and

Constellation completed
The first, or prototype, Block I QZSS satellite was launched in 2010 and, based on the positive test results from this satellite, an additional three satellites were launched in 2017, completing a four-satellite constellation. In this month’s column, we examine the recent developments of this unique and innovative navigation system. read more

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

Could we be entering the Autonomous Age?

February 9, 2018 - By

We no longer live in the Nuclear Age. Did you notice? Use of the term faded away. We no longer define our lives by the existence of nuclear technology, though of course it’s still part our world. While the naming of “ages” is arbitrary, most people would say we’re currently in the Information Age. The last Great Age before the... read more

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

Launchpad: Antennas, autonomous vehicle platform

February 8, 2018 - By

SURVEY & MAPPING Mobile surveying app Increases RTCM 3.1 support SuperSurv’s NTRIP solution is being enhanced to adopt more RTCM versions and provide a better GNSS positioning service. NTRIP (Networked Transport of RTCM via internet protocol) is a protocol to send GNSS-related data through the internet, which enables users of differential GPS or network real-time kinematic (RTK) to get correction... read more

This article is tagged with , , , , , , and posted in Mapping, OEM, Product Showcase, Survey, Transportation, UAV/UGV

Hoopo to provide low-power geolocation for IoT

February 8, 2018 - By

A new company, hoopo, has launched to supply an innovative, accurate geolocation solution for low-power wide area (LPWA) networks. The solution would improve precision for low-power Internet of Things (IoT) asset tracking. Hoopo’s geolocation enables companies to locate their valuable assets without the significant cost or battery consumption that can be associated with GPS. hoopo’s IoT solutions help companies precisely track specific... read more

This article is tagged with , , , , , , , , and posted in Latest News, Mobile, Transportation

Expert Opinions: Challenges faced by multi-constellation GNSS receiver designers

February 8, 2018 - By

Q: What is the biggest challenge facing designers of multi-constellation GNSS receivers today? Javad Ashjaee, founder of Javad GNSS: The biggest challenge now is spoofing. Some years ago the issue was jamming —the hot issue of LightSquared — that would hurt GNSS. To solve that problem we created the J-Shield and showed that J-Shield technology could protect against LightSquared and... read more

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

Antenna pattern uniformity effects on pseudorange tracking error

February 7, 2018 - By , , , , and

More satellites, more constellations, more multi-frequency receivers — they all drive greater achievable accuracy. But they also raise the requirements on GNSS antennas because of the stronger impact that possible imperfections might have in the overall error budget for multi-frequency combinations. This analysis of antenna-induced errors in pseudorange code measurements for different antenna feed types helps identify the advantages and... read more

This article is tagged with , , , , , and posted in Featured Stories, OEM

Where is that spoofed signal coming from?

February 7, 2018 - By

Javad GNSS advises that with its equipment it is possible, when a spoofer is detected in the area, to identify the direction from which the spoofing signals are coming. Hold the receiver antenna horizontally and rotate it slowly (one rotation in 30 seconds) to determine the angle at which satellite energies become minimum. The spoofer’s direction lies behind the null... read more

This article is tagged with , , , , and posted in Latest News, Survey
« Previous Page
Next Page »