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junzis / pyModeS

Python decoder for Mode S and ADS-B signals
GNU General Public License v3.0
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altitude_diff missing - enhancment: add decoded value and calculate GNSS Alt #107

Closed ghost closed 2 years ago

ghost commented 3 years ago

https://github.com/junzis/pyModeS/blob/83e22892ba80829987acd5d84cb27f90532aef17/pyModeS/decoder/adsb.py#L8

altitude_diff missing to provide the GNSS altitude (height above ellipsoid (HAE) WGS84) difference from the barometric altitude "alt" (which is standard pressure, and not even MSL).

Request enhancement to decode this value and present to live-modes streamer and display. Also request enhancement to automatically calculate the HAE feet (GNSS altitude) from decoded altitude(barometric) https://github.com/junzis/pyModeS/blob/83e22892ba80829987acd5d84cb27f90532aef17/pyModeS/decoder/adsb.py#L136 and provide a "calculated" GNSS Altitude in HAE feet or meters.

junzis commented 2 years ago

altitude_diff() can be found at: https://github.com/junzis/pyModeS/blob/83e22892ba80829987acd5d84cb27f90532aef17/pyModeS/decoder/bds/bds09.py#L106