Design & Test

GPS Satellite Simulator

June 19, 2012By

CAST Navigation of Tewksbury, Massachusetts introduced its SGX GPS Satellite Simulator. With its compact size — 7 × 11× 3 inches — and weighing in at just over 4 pounds, the SGX is CAST’s newest and smallest fully capable simulator to date. The new SGX replaces the CAST-SIMCOM Simulator which was a 17-inch, 50-pound simulator. The SGX lightweight portability operates... read more

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The System: Commercial GPS in Combat

June 1, 2012By

Partnership Council Affords Insight, Drama By Alan Cameron This year’s GPS Partnership Council provided among other highlights a discussion of the tensions between commercial off-the-shelf (COTS) receiver systems used in tactical combat operations versus official military GPS user equipment (MGUE), and an enthralling warfighters’ panel that revealed much of those COTS/MGUE dilemmas. The event, held May 1–2 in El Segundo,... read more

MBOC Signal Furor

May 23, 2012By

A subsidiary of the UK Ministry of Defence has been granted a UK patent on the MBOC signal design, which was a product of lengthy and cooperative negotiations between U.S. and European scientists. The UK patent, taken in the names of two UK scientists participating in the project, is being used by a legal firm to demand royalty fees from... read more

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Spectracom Releases Dual-Frequency Multi-GNSS Constellation Simulator

May 10, 2012By

Spectracom announced its new L1+L2 dual-frequency 32-channel multi-GNSS simulator, the GSG-62. The GSG-62 offers multiple frequency band operation, multiple GNSS constellation simulation, and expansion capability for more frequency bands and channels, the company said. The new simulator provides expanded capabilities for those who are testing more than GPS L1, according to the company. “We understand the challenges our customers have... read more

The Evolution of Spirent GNSS Simulation

May 8, 2012By

Spirent’s simulation systems have changed significantly from their technology beginnings, which can be traced back to World War II radars. The company and its technology have evolved to keep pace with today’s growing population of GNSS constellations and to meet the challenges that receiver manufacturers and users encounter in an ever-complex integrated GNSS environment. read more

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Simulator Buyers Guide

May 1, 2012By

  In GPS World’s first-ever Simulator Buyers Guide, we feature simulator tools, devices, and software from eight prominent companies. Download the PDF. read more

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Innovation: Simulating GPS Signals

May 1, 2012By
FIGURE 3. Signal Architect simulation flow. (Click to enlarge.)

It Doesn't Have to Be Expensive
GNSS signal simulators can be expensive and beyond the limited budgets of many researchers. In this month’s column, we look at one company’s approach to providing GNSS signal simulation at a low cost — one that virtually any researcher can afford.GNSS signal simulators can be expensive and beyond the limited budgets of many researchers. In this month’s column, we look at one company’s approach to providing GNSS signal simulation at a low cost — one that virtually any researcher can afford. read more

Simulating Inertial/GNSS Hybrid: SINERGHYS Test Bench for Military and Avionics Receivers

May 1, 2012By
Gallot-opener

A new hardware assessment tool automates testing and mission replay, managing military GPS receiver input and output data, with an operational implementation and with a better control of initialization conditions, especially direct P(Y) acquisition. The test bench drives a GPS/Galileo simulator, a digital jammer, and software programs for visibility computation based on terrain modeling, and for multipath generation on 3D renderings. read more