spirent.com
Posts Tagged "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.

Read full post 0 Comments

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.

Read full post 0 Comments

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.

Read full post 0 Comments

Location tracking with GPS is becoming a staple feature in many consumer devices. However, consumers expect a high level of accuracy, and reviews are noting discrepancies between GPS readings from wearable devices and smartphones. In this blog we look at how wearables manufacturers can improve position accuracy.

Read full post 0 Comments

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.

Read full post 0 Comments

The biggest navigation conference of the year, The Institute of Navigation’s GNSS+, came to a close last week, September 8-12. Why the “+”? To recognise that Global Navigation Satellite Systems (GNSS), although an autonomous technology, is rarely enough to assure the performance, resilience or trust that is needed for the huge range of today’s position, navigation and timing applications.

Read full post 0 Comments

Whether you are developing a smartphone for immediate global sale, or designing the Global Navigation Satellite System (GNSS) technology of the future, BeiDou-2 is big news. For those outside the world of GNSS, keeping track of China’s developing satellite constellation—and its developing nomenclature—can be far from easy.

Read full post 0 Comments

There’s no point in having a decent car, if you spend most of your time stuck in traffic.

The thought flashes through my mind as I drive through the streets of NYC, occasionally glimpsing snarling traffic blocking avenues and cross streets. The navigation app on my smartphone helps avoid all the major blocked points - using real time, crowd-sourced traffic data and location information from thousands of users, including the frustrated ones stuck in traffic. 


Read full post 0 Comments

Introduction The FCC, LightSquared and GPS industry have all agreed that the many questions around the potential for LightSquared’s proposed L-Band terrestrial/satellite network to cause interference with GPS can only be answered with accurate and thorough testing. As mandated by the FCC, LightSquared and the United States Global Positioning System Industry Council (USGIC) have established a GPS Technical Working Group (TWG) to investigate the issues surrounding potential interference. ...

Read full post 0 Comments

CNSS is the Compass Navigation Satellite System, which will eventually comprise up to 30 medium-earth-orbit satellites and five geosynchronous satellites to provide true global coverage. This Chinese system is distinct from that country's existing Beidou I satellite system, which has been operating since 2003 but provides only domestic coverage using three geosynchronous satellites. Like other systems, the CNSS will provide two levels of service. The free service for civilian users will offer p...

Read full post 0 Comments

The official opening on 20th December 2010 of the Fucino Galileo Control Centre, 130km east of Rome, has brought the Galileo global navigation satellite system one step closer to fruition. However, a continuing shortage of funding for the project suggests that while Galileo will be available by 2014, the service will initially be limited. Earlier in 2010, the European Commission confirmed that funding was available to launch four in-orbit validation (IOV) satellites by 2014, with the first two ...

Read full post 0 Comments

GPS specifically, and GNSS more generally, works fantastically well in its native mode of operation with an open view of the sky. High vehicle speeds, even in an aircraft manoeuvring at several times the speed of sound, are well within the capabilities of the GPS system. To use more specific language, the accuracy and continuity of positioning information is very high in open sky conditions. Back down to earth, a person walking with their GPS on the edge of the street in a typical town or c...

Read full post 0 Comments

Despite continuing delays in its introduction, when the new European Union funded Galileo constellation goes live in 2014 it will provide a number of novel services. Designers of next-generation Multi-GNSS systems need to factor in these new capabilities in order to keep their equipment ahead of the competition. Importantly, Galileo is designed provide more precise location data from that provided by GPS or GLONASS, and will be accurate down to the one-meter range. The data will ...

Read full post 0 Comments

Our last posting [Weighing the Options – Three Approaches for Testing Real-World A-GPS Performance] discussed approaches for testing real-world A-GPS performance, ending with a recommendation for a lab-based simulation approach. With its repeatable environment, easy setup, fast test times, automated result collection and enhanced handset performance benchmarking capabilities, lab simulation certainly sounds like a great idea, right? Well actually, of the three approaches we discussed, lab ...

Read full post 0 Comments
× Spirent.com uses cookies to enhance and streamline your experience. By continuing to browse our site, you are agreeing to the use of cookies.