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Jan 25 2022. 


article from prior work: ADS-B.pdf

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Try this: https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/

Nope. 

Try this: sudo port install gqrx

had to 'accept' Xcode license- sudo xcodebuild -license

then 

sudo port install gqrx

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With Preplexity's help generated a shell script that asses ice formation likelihood at 30000 feet:

Contrails.sh

produces an output file, contrail_predictions.csv, with timestamp, temperature at 300hPa, RH, RH ice, Favorable or Not Favorable for contrail formation: 

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  1. run plane-finder every minute or so. Identify any new planes that are above some elevation angle cutoff, say 15 degrees. Start a data file per plane in a folder for that night
  2. accumulate track information for each plane above threshold elevation angle. 
  3. Use that track information and winds aloft to create contrail track for each plane. We can also predict this 5-10 min into the future.
  4. Use wind-aloft direction to determine contrail transport direction- is it along or cross-contrail? Make photometry assessment.  
  5. send contrail mask file to scheduler. 
  6. We can validate all this in daytime with all-sky Canon camera. 

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