GpsSatellite.getSnr() - What is the value range?

Posted by rflexor on Stack Overflow See other posts from Stack Overflow or by rflexor
Published on 2010-03-17T07:44:49Z Indexed on 2010/03/17 7:51 UTC
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android

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gps

I'm building a Sat-View that draws a small bar-chart for available satellites and their signal strength (or better: their signal-to-noise-ratio / SNR).

The javadoc doesn't say what value-range to expect for the SNR. The NMEA-Standard says 0-99, but even in best conditions my G1 doesn't reach that value. I also read that different manufacturers use different value-ranges for the SNR, so is that true for android-devices, too? Or is there a unified value range on that plattform and if so, what is it?

The lack of information in the docs leads me to suspect I just get the "raw" SNR from the driver, in which case I'd like to know: What do you think is the best approach to visualize that unknown value-range in a bar-chart?

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