New LabVIEW toolkit for GPS receiver testing
3 September 2008
Design Automation
National Instruments has developed the NI GPS Toolkit for LabVIEW, an extension of the graphical system design environment that expands the NI RF PXI platform to include multisatellite GPS signal simulation. Using NI LabVIEW software to create waveforms that simulate up to 12 satellites (C/A codes in the L1 band), engineers can test receiver characteristics such as sensitivity, time to first fix (TTFF) and position accuracy with the NI PXIe-5672 RF vector signal generator.
With the new toolkit, engineers can use a combination of simulated and recorded GPS waveforms as a comprehensive, low-cost solution for receiver design validation and verification. By recording live GPS signals off the air with an NI PXI-5661 RF vector signal analyser and an NI PXI-5690 preamplifier, engineers can capture GPS signals with natural impairments that a receiver would observe in the real world. They can also generate both simulated and recorded signals with the NI PXIe-5672 RF vector signal generator, by continuously streaming GPS waveforms from hard disk. With a 2 TB redundant array of inexpensive disks (RAID) hard drive option, engineers can generate up to 12,5 minute of non-repeating simulated waveform or 25 hours of continuous recorded GPS signal to test how the receiver responds to a broad range of circumstances.
Engineers can combine the GPS Toolkit with the NI Modulation Toolkit for LabVIEW, NI TestStand test management software and PXI RF modular instrumentation for a complete low-cost production test solution. Because PXI modular instrumentation is purely software-defined, the same PXI system can test wireless devices that use other standards such as RDS, WiFi, GSM, WCDMA, Bluetooth and DVB. PXI measurement systems offer a lower cost, more flexible and higher throughput solution compared to traditional instrumentation in production test applications.
For more information contact National Instruments, 0800 203 199, [email protected], www.ni.com/southafrica
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