Why Does a GNSS Simulator Need a GUI?

There is no doubt that testing GNSS receivers is a complex business. Today's GNSS simulators are sophisticated instruments with increasing levels of features and complexity. Yet time-to-market pressure on GNSS receiver designers and manufacturers dictate that these simulators must be easy to understand and intuitive to operate.

The key to this ease of use is in the graphical user interface (or GUI). And properly designed, the GUI will help simulator users access important information quickly and improve the interaction between the user and the device under test. In short, a good GUI is no longer an option – it is a necessity, saving valuable time at all stages of the test process, and thereby reducing time to market.

At the most basic level, the user interface for a GNSS simulator should provide graphical representations of the sky chart, detailed channel information including power levels, true position information, the satellite ground track and a vehicle instrument panel to mirror the GNSS receiver in use.

Advanced simulator features that greatly benefit from graphical representation include visualisation of ionospheric errors and the ability to create simple and complex multipath test scenarios.

Spirent's GNSS simulators come complete with the company's highly acclaimed SimGEN™ test software, which incorporates an easy-to-use graphical user interface that allows modification of a wide range of variables from preset defaults, enabling the user to focus their time on the areas of test important to them.

Example of Spirent’s SimGEN GUI using AGI’s STK software


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