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Simulation toolkit eases GPS receiver testing

Posted: 25 Jun 2009 ?? ?Print Version ?Bookmark and Share

Keywords:software? GPS? LabVIEW toolkit?

The latest version of National Instruments Inc.'s software toolkit promises to make it easier for engineers to create custom motion profiles and increase simulation duration.

The NI GPS Simulation Toolkit 1.5 for LabVIEW is an extension of the graphical system design environment that expands the NI RF PXI platform to provide engineers a cost-efficient, high-performance solution for GPS receiver testing that exceeds the capabilities of traditional box instruments. The latest version of the GPS Simulation Toolkit gives engineers new satellite simulation features including extended time duration of non-repeating GPS satellite signals and the ability to customize motion profiles for mobile receiver tests.

The toolkit offers a graphical API for validating and testing GPS receivers. With the toolkit engineers can simulate C/A codes for up to 12 satellites in the L1 band. It features waveform creation tools to specify both the receiver location and velocity, and the ability to create waveforms with up to 24 hours of non-repeating GPS satellite signals, giving a longer period of non-repeating simulation data than other GPS test solutions. This makes it possible for engineers to achieve extended reliability testing and superior control over signal impairments introduced during design verification testing.

The latest version of the toolkit also adds new capabilities for generating custom motion trajectories, so engineers can simulate the signals that GPS receivers capture on specific routes. The ability to simulate these signals using software-defined instrumentation helps engineers conduct customized and repeatable tests featuring route-specific signals without performing expensive drive tests. Additionally, with the GPS Simulation Toolkit, engineers can adjust individual satellite signal powers during signal generation for dynamic range and scenario-specific tests.

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