2019-07-21 08:09:11 -06:00
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# galmon
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galileo open source monitoring
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2019-08-06 11:13:25 -06:00
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Tooling:
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* ubxtool: can configure a u-blox 8 chipset, parses its output & will
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convert it into a protbuf stream of GNSS NAV frames + metadata
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Adds 64-bit timestamps plus origin information to each message
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* xtool: if you have another chipset, build something that extracts NAV
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frames & metadata
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* navtrans: transmits GNSS NAV frames emitted by ubxtool to a collector.
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Performs some best effort buffering & will reconnect if needed.
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* navrecv: receives GNSS NAV frames and stores them on disk, split out per
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sender
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* navstore: tails the file stored by navrecv, puts them in LMDB
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* navstream: produces a stream of NAV updates from all sources, with a few
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seconds delay so all data is in. Does this with queries to LMDB
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* navweb: consumes these ordered nav updates for a nice website
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* navinflux: puts "ready to graph" data in influxdb - this is the first
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step that breaks "store everything in native format". Also does
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computations on ephemerides.
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* grafana dashboard: makes pretty graphs
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The transport format consists of repeats of:
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1) Four byte magic value
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2) Two-byte frame length
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3) A protobuf frame
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The magic value is there to help us resync from partially written data.
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The whole goal is that we can continue to rebuild the database by
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rerunning 'navstore' and 'navinflux'.
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