Fix GNSS data retrieval and downloading functions#794
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Updated the get_stats_by_llh function to prioritize IGS20 coordinates over legacy data. Enhanced the download_UNR function to include a fallback to the legacy archive when downloading tropospheric delays. Context: There appears to be ongoing migration of data in the UNR archive such that data from much of the eastern hemisphere is disrupted after 2023. This PR is intended to circumvent this.
Added entry for PR #794 to address data migration issues in the UNR archive affecting the eastern hemisphere.
jlmaurer
reviewed
Apr 15, 2026
| url_igs20 = f'{baseURL}gps_timeseries/IGS20/llh/llh.out' | ||
| col_names = ['ID', 'Lat', 'Lon', 'Hgt_m'] | ||
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| # Read legacy list |
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@sssangha would it make more sense to wrap all of the legacy calls within a single try/except that checks for stations for which IGS20 was successful for all stations and then pulls legacy data only for the subset of stations that are not available? That way the IGS20 is still the default and all the work needed if legacy stations are required is skipped unless they are actually needed.
| # Try IGS20 first | ||
| filepath = download_url(url_igs20, save_loc) | ||
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| # If IGS20 is missing, try legacy |
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Does this work if a subset of stations is available but others are not?
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Updated the get_stats_by_llh function to prioritize IGS20 coordinates over legacy data.
Enhanced the download_UNR function to include a fallback to the legacy archive when downloading tropospheric delays.
Context: There appears to be ongoing migration of data in the UNR archive such that data from much of the eastern hemisphere is disrupted after 2023. This PR is intended to circumvent this.
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