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Spirent KB Article
Doc ID: FAQ18137
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Positioning Application, GNSS Simulators: Why is the simulated GNSS spectrum incorrect?
Environment/Versions
SimGEN, all versions
Spirent GNSS simulator hardware
When viewing the RF output from the simulator on a spectrum analyser, the spectrum is not what you expect.
Answer
The most common cause is an incorrect setting in the constellation's signal sources file. SimGEN allows great flexibility when selecting which signal components to enable. However, this means you can configure signals which differ from the real GNSS signals.
In PosApp, open the signal sources file and go to the Signal Control -- General page.
Verify that no signals have navigation data
enabled
and code
disabled
Verify that this is the case for
all
satellites - it is easy to make a change and forget to click 'All'.
Version
1.0
Publish Date
2017-12-08
Categories
Product : Positioning,Position Apps,SimGEN,PosApp
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