Have you tried uploading your 1Hz file
into OPUS?
OPUS should ignore the other constellations and is supposed to decimate the observations down to 30 seconds itself behind the scenes without you having to worry about it.
I use AUSPOS over here and it does the same, I feed it directly from
ConvertToRINEX and it works fine even with 1Hz & GLONASS included.
If you still need to manipulate these sorts of things you can do it with the RINEX files, the Swiss army knife is a tool called gfzrnx and its free for personal use but it's not for the feint hearted.
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John Winkler
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Original Message:
Sent: 02-05-2023 17:59
From: Jim Mitchell
Subject: RINEX for OPUS
Ronny
Thanks for the link. The program works fine on files from an Alloy but not on the 1Hz files from a Net R8 I have. I will have to experiment some more but it's a start.
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Jim Mitchell
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Original Message:
Sent: 02-05-2023 17:19
From: Ronny Schneider
Subject: RINEX for OPUS
Have you tried the Spectra Precision Rinex Converter:
https://spectrageospatial.com/sp60-gnss-receiver/
We have to use it for our Trimble SPS785 which are basically Spectra SP60. But it works for SPS855 base T02's as well.
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Ronny Schneider