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Resolves #373 - Adds support for Tuner frequency error PPM monitoring

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and auto-correction for R820T tuners.

-Updated TunerModel and TunerViewPanel to add 2 new columns to
display the current tuner's PPM setting and (when available) the
measured frequency error averaged over 5 second intervals provided by
certain decoders (e.g. P25 C4FM and LSM).  Frequency error value from
P25 decoders is provided from the Costas Loop PLL once 2 or more P25
message sync events have been observed in a short period.
-Updated R820T tuner to auto-correct PPM when measured frequency error
exceeds the +/- 0.4PPM threshold for a period of 30 seconds or more.
Feature can be enabled/disabled by user in the tuner editor panel.

Resolved several issues with P25 C4FM/LSM decoders that was impacting
performance related to channel misalignment from tuner PPM offsets.
This commit is contained in:
Denny
2018-07-29 10:48:29 -04:00
parent 5c0d97d942
commit 0c47efea03
44 changed files with 1296 additions and 483 deletions
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.idea/dictionaries/denny.xml generated
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@@ -14,6 +14,7 @@
<w>nutall</w>
<w>overflowable</w>
<w>polyphase</w>
<w>qpsk</w>
<w>remez</w>
<w>resampler</w>
<w>samplerate</w>