59 lines
2.1 KiB
Markdown
59 lines
2.1 KiB
Markdown
# dump1090 aircraft database
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The dump1090 webmap uses a static database of json files to provide aircraft
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information.
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This directory has some tools to turn a CSV file with aircraft data into
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the json format that the dump1090 map expects.
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## Data sources
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The default data comes from a combination of:
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* some historical data kindly provided by VRS (unfortunately no longer
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updated) - this data is in vrs.csv.xz; and
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* a data export provided by FlightAware that is updated periodically -
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this data is in flightaware-*.csv.xz
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The VRS data was extracted by:
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```sh
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$ wget http://www.virtualradarserver.co.uk/Files/BasicAircraftLookup.sqb.gz
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$ gunzip BasicAircraftLookup.sqb.gz
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$ tools/vrs-to-csv.py BasicAircraftLookup.sqb >tools/vrs.csv
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```
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The FlightAware data is a subset of the registry information that FlightAware
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uses internally. It contains only the data that FlightAware can redistribute
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to the public; some data sources that FlightAware uses do not allow this and
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are excluded from the export.
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## Regenerating the json database
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To regenerate the json database from these input files:
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```sh
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$ rm ../public_html/db/*.json
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$ xzcat vrs.csv.xz | nodejs ./filter-regs.js >vrs-pruned.csv
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$ xzcat flightaware-20190502.csv.xz | nodejs ./filter-regs.js >fa-pruned.csv
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$ ./csv-to-json.py vrs-filtered.csv fa-filtered.csv ../public_html/db
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```
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Additional CSV files can be given to `csv-to-json.py` if desired.
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The contents of public_html/db should be installed where the webmap can find
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them; the Debian packaging puts these in
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/usr/share/dump1090-fa/html/db
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The CSV format is very simple. The first line must be a header line that names
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the columns. These columns are understood:
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* icao24: the 6-digit hex address of the aircraft
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* r: the registration / tail number of the aircraft
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* t: the ICAO aircraft type of the aircraft, e.g. B773
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Any other columns are put into the json DB under the name you give them, but
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the standard map code won't do anything special with them. You can pick these
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columns up in the PlaneObject constructor (see planeObject.js where it calls
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getAircraftData()) for later use.
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