TAG: simulation

Expert Advice: Get Sporty

October 1, 2013By
mountain bikers, with navigation device

By Mark Sampson In recent years, the sporting world has seen an explosion in the use of GPS. You will rarely spot a runner or cyclist on the road without either a smartphone strapped to their arm or a dedicated GPS device clamped to their handlebars, tracking their every move. The amount of information that the modern sportsperson — from... read more

Innovation: Evil Waveforms

May 1, 2013By
Innov-evilwave-O2

Generating Distorted GNSS Signals Using a Signal Simulator
In this month’s column, our authors discuss a set of GPS and Galileo evil-waveform experiments they have carried out with an advanced GNSS RF signal simulator. Their results will help to benchmark the effects of distorted signals and perhaps lead to improvements in GNSS signal integrity. read more

2013 Simulator Buyers Guide

May 1, 2013By

CAST Navigation CAST-SGX GPS Satellite Simulator The SGX GPS satellite signal simulator from CAST Navigation provides the user with dynamic, repeatable GPS RF signals for use in the laboratory or in the field for a wide range of GPS applications. The SGX simulator is housed in a portable, lightweight handheld enclosure measuring 7 × 11× 3 inches and weighing just... read more

This article is tagged with and posted in Product Showcase, Simulators & Tools

Expert Advice: The Challenge of BeiDou

May 1, 2013By

By Mark Sampson, Racelogic GNSS is changing. The days of only American GPS satellites providing signals to the civilian population are gone as new constellations are launched. GLONASS was a slow starter, but is now well established, and its signal architecture is now commonly implemented in manufacturers’ chipsets. Galileo is still very much in test phase with global coverage planned... read more

Expert Advice: Keeping up with Multi-GNSS

May 1, 2013By
Steve Hickling

By Steve Hickling, Spirent GNSS have been with us for more than 30 years, giving rise to a wealth of positioning and navigation technologies for military, civilian, and consumer use. Today, we’re entering a new era of experimentation and innovation in satellite and hybrid positioning. In turn, this drives new test challenges and introduces an ever wider group of engineers... read more

This article is tagged with and posted in Expert Advice & Leadership Talks, OEM Opinions, Simulators & Tools

Expert Advice: Product Testing: Simulation and Beyond

May 1, 2013By

By Pierre Nemry and Jean-Marie Sleewaegen, Septentrio Satellite Navigation Today’s customers ask for high-accuracy positioning everywhere, even in the most demanding environments. The time is long gone that the only requirement for a receiver was to track GPS L1 and L2 signals in open-sky conditions. State-of-the-art receivers operate in increasingly difficult conditions, cope with local radio-frequency interference, survive non-nominal signal... read more

Innovation: Record, Replay, Rewind

October 1, 2010By
opener-copy

Testing GNSS Receivers with Record and Playback Techniques
Is there a way to perform repeatable tests on GNSS receivers using real signals? This month’s column looks at how to use an RF vector signal analyzer to digitize and record live signals, and then play them back to a GNSS receiver with an RF vector signal generator. read more

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