Filtering of data source and output
I'm having an issue with the position/SOG data on SignalK server installed via OpenPlotter.
The AIS transceiver is being used to provide the position data (and SOG and COG). It is outputting 2 sentences AIGLL and AIVDO which contain location data and don't always seem to match. GPS accuaracy is reported as =/- 0.5-1.5m
The issue we're seeing is:
* The position is jumping about as the vessel moves, sometimes moving backwards, sometimes sideways on OpenCPN which is only taking data from SignalK
* When tied to a fixed pontoon the SOG is randomly flickering between 0 and 0.6 knots on the KIP interface
I'm thinking that it's either an interaction between the 2 sentences or a lack of filtering.
Is there a way to tell the SignalK server to only ever take position data from AIGLL?
Is there a way to add a moving average filter to location, COG and SOG? Something like a 5 second moving average would probably be good.
The AIS transceiver is being used to provide the position data (and SOG and COG). It is outputting 2 sentences AIGLL and AIVDO which contain location data and don't always seem to match. GPS accuaracy is reported as =/- 0.5-1.5m
The issue we're seeing is:
* The position is jumping about as the vessel moves, sometimes moving backwards, sometimes sideways on OpenCPN which is only taking data from SignalK
* When tied to a fixed pontoon the SOG is randomly flickering between 0 and 0.6 knots on the KIP interface
I'm thinking that it's either an interaction between the 2 sentences or a lack of filtering.
Is there a way to tell the SignalK server to only ever take position data from AIGLL?
Is there a way to add a moving average filter to location, COG and SOG? Something like a 5 second moving average would probably be good.
