By Ali Soliman On January 23, 2020
Positioning
ag tech, precision agriculture, positioning, gnss, positioning technology

Precision farming relies on highly accurate location data using GNSS and other positioning technologies. Testing positioning performance is critical to delivering a reliable product.

By Will Thornton On December 4, 2019
Positioning
GNSS, Positioning, PNT, GNSS error, Galileo error, GPS error, GNSS system failure, GNSS testing, GNSS test

Issues like the GPS Week Number Rollover and recent Galileo outage mean developers and users should verify that each system’s ICD is correctly implemented in their firmware.

By Raphael Grech On August 26, 2019
Positioning
CAV, Spirent, Autonomous vehicles, positioning, navigation, timing, precision

Autonomous vehicles require decimetre-level positioning for highway operation, and near-centimetre-level for operation on local and residential streets. But how is this achieved and verified?

By Romain Zimmermann On July 24, 2019
Positioning
Italdesign, spirent, gss7000, connected and autonomous vehicles, simulation, positioning, navigation, timing, co-simulation, GNSS, PNT, GPS

Autonomous vehicles demand rigorous testing that can be difficult to conduct on real roads. Here’s how we helped Italdesign create a flexible, integrated simulation platform.

By Alain Vouffo On April 29, 2019
Positioning
gps, gnss, CAV, connected, autonomous, vehicles, sensor, fusion, V2X, V2V, V2I, PNT, positioning, navigation, timing, GSS9000

Connected vehicles rely on a complex mix of RF technologies meaning GNSS receiver developers will need to adopt new test methods to serve this growing market.

By Edward Knapp On February 18, 2019
Positioning
connected autonomous vehicle, spirent, positioning, navigation, timing, gnss, testing, simulation, signal, rtk, ppp, precise, real-time kinematic, precise point positioning

Developers of connected and autonomous vehicles are exploring the potential of RTK and PPP for precise positioning. This blog explores the need for lab-based simulation of error correction

By Colin Ford On February 8, 2019
Positioning
connected autonomous vehicle, spirent, positioning, navigation, timing, gnss, testing, simulation, signal, over-the-air, chamber, RF, interference, anechoic

Developers of connected and autonomous vehicles must assess how well the vehicle’s antenna receives GNSS signals – and that requires over-the-air testing. This blog looks at the implications.

By Ali Soliman On January 21, 2019
Positioning
spirent, testing, positioning, navigation, timing, gnss, gps, receiver, simulation, 3D simulation, connected, autonomous, vehicles, multipath, obscuration

Developers of connected autonomous vehicles must understand the impact of multipath and obscuration on the GNSS receiver. This blog explores the need for 3D simulation in the research lab.

By Ricardo Verdeguer Moreno On January 16, 2019
Positioning
hardware in the loop, testing, positioning, navigation, timing, connected, autonomous, vehicles, spirent, gps, gnss, resilient, simulation

Positioning is a critical capability for autonomous vehicles, and requires testing over hundreds of millions of significant miles. We explore the case for simulation with hardware in the loop.

By Romain Zimmermann On January 15, 2019
Positioning
connected autonomous vehicle, spirent, positioning, navigation, timing, gnss, sensor fusion, sensors, connected, autonomous, vehicles, CAV, driverless, cars, lidar, radar, sonar, rtk, precision, testing, simulation

Connected autonomous vehicles rely on a battery of sensors for position, navigation and timing. Our new blog series will look at four critical aspects of testing PNT capabilities in the lab.

By Guy Buesnel, CPhys, FRIN On September 14, 2015
Positioning
Positioning, Navigation, GPS, GNSS, GPS Jamming, GPS Threats, Security Vulnerabilities

Here is a look at what’s at stake for manufacturers of GPS-reliant devices as faking GPS signals becomes a widespread hacking technique.

By Rahul Gupta On May 13, 2015
Positioning
Simulate Leap Second, GNSS, GPS, UTC, Glonass, Beidou, Receiver, Timing correction, Positioning, Navigation, Compliance

For GPS systems that rely on positioning and timing data a single-second deficit can have a significant impact.

By Guy Buesnel, CPhys, FRIN On September 1, 2014
Positioning
GNSS, Positioning, GPS, Vulnerability

Recent events with GLONASS and with GPS in Australia demonstrated that navigation systems are vulnerable to software problems or glitches. The threat of jamming and spoofing are relevant for GNSS, where the power of the broadcast signals is comparatively weak (think of spotting a 40W light bulb from a few kilometres) and therefore susceptible to RF interference.

By Kunal Shanishchara On August 1, 2014
Wireless
VoLTE, Mobile, Wireless, E911, FCC, Positioning, Location services

In the US, mobile phones long ago surpassed landline phones and are now the most common way to contact emergency services. What emergency callers using their mobile device indoors may not realize however; is that a huge gap exists between their expectation of being located and the accuracy of current positioning technologies when used indoors.