I am using the Ardusimple calibrated antenna and submitted a 24 hr Rinex file (converted from ubx) to CSRS-PPP service. When the file is processed, I get the following warning:
Warning : No antenna type RINEX header record was found. Phase Centre Offsets and Variation could not be applied. Estimated height should be used with caution.
I see that when I convert the ubx file to Rinex using RTKCONV, in the options, I can add the antenna # / Type so that it is added to the Rinex header. What is the appropriate information to put in these two fields?
Did you download the antenna calibration file?
Antenna calibration files can be downloaded from NGS website (Manufacturer: ArduSimple, Model: AS-ANT2B-CAL): https://www.ngs.noaa.gov/ANTCAL/index.xhtml#
Yes, I have downloaded the antenna calibration files, but am unaware where I would use the calibration file.
In the Options menu of RTKCONV, I have input AS-ANT2BCAL and NONE:
When I submit the file for processing, now get the following message:
Warning : Although an antenna record was located in the RINEX file, no phase centre information could be found in the IGS/NGS file for your antenna. Estimated height should be used with caution. Ensure that both the antenna type and the RINEX header record “ANT # / TYPE ” are valid.
I have resolved the issue. For posterity, when entering the antenna information in the fields, the information should be switched.
To populate the antenna information in the header of a Rinex file, use RTKCONV, click Options, then for ANT #: NONE and TYPE: AS-ANT2BCAL. Like this: