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Introducing SimSENSOR

By Rahul Gupta On August 6, 2012
Positioning
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Spirent Helps Developers Solve the Indoor Positioning Challenge

Perfecting indoor positioning is the next great challenge for developers of location-aware devices. To meet the challenge, developers are increasingly drawing on a combination of technologies.

As well as cellular and Wi-Fi networks, many device developers are now taking advantage of the microelectromechanical systems (MEMS) inertial sensors included as a matter of course in most smartphones and automotive navigation systems.

Common MEMS inertial sensors include accelerometers, gyroscopes, barometers and magnetometers, and are in a number of ways a perfect complement to GNSS positioning, since:

  • Inertial sensors naturally continue to work in environments where GNSS is limited or denied
  • GNSS signals can be used to correct the cumulative drift errors of inertial sensor data

Until now, however, professionally testing the algorithms necessary to fuse the data from these two technologies has been a huge undertaking, and required a great deal of investment in time and money.

Field testing algorithms has meant physically setting prototype devices in motion on a fixed trajectory–a practice which not only requires the construction and management of a large physical test rig, but is subject to all the accuracy and repeatability issues inherent in any test that relies on live GNSS signals.

Our New Test Solution

Our new SimSENSOR tool extends the capabilities of our GSS6700 Multi-GNSS simulators to makes controlled, repeatable, and truly meaningful sensor fusion algorithm testing a reality.

Engineered to meet the unique requirements of consumer device developers, it simulates the output of MEMS inertial sensors along the same trajectory as the GSS6700 or GSS8000’s multi-GNSS signals:

  • Bringing algorithm performance testing into the lab
  • Eliminating the costs of performance testing in the field
  • Accelerating test cycles
  • Increasing test accuracy

You can find out more about testing sensor fusion algorithms with SimSENSOR, or simply by getting in touch. If you’re facing similar challenges but working with high-grade Inertial Measurement Units (IMUs) for military or civil applications, our SimINERTIAL tool is built to meet your specific needs.

 

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