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sp3 sources

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bert hubert 2019-12-25 21:47:57 +01:00
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README.md
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@ -219,8 +219,21 @@ Data sources
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The software can interpret SP3 files, good sources:
* http://navigation-office.esa.int/products/gnss-products/
* ESA/ESOC: http://navigation-office.esa.int/products/gnss-products/ - pick the
relevant GPS week number, and then a series (.sp3 extension):
* ESU = ultra rapid, 2-8h delay, only GPS and GLONASS
* ESR = rapid, 2-26h delay, only GPS and GLONASS
* ESM = finals, 6-13d delay, GPS, GLONASS, Galileo, BeiDou, QZSS
* File format is esXWWWWD.sp3 - where X is U, R or M, WWWW is the
(non-wrapping) GPS week number and D is day of week, Sunday is 0.
* Further description: http://navigation-office.esa.int/GNSS_based_products.html
* GFZ Potsdam: ftp://ftp.gfz-potsdam.de/GNSS/products/mgnss
* The GBM series covers GPS, GLONASS, Galileo, BeiDou, QZSS and appears
to have less of a delay than the ESA ESM series.
* GBU = ultra rapid, still a few days delay, but much more recent.
Uncompress and concatenate all downloaded files into 'all.sp3' and run
'navdump' on collected protobuf, and it will output 'sp3.csv' with fit data.
Big TODO
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