This app uses an Android smartphone and a Bluetooth-connected GNSS receiver to record static observation data to the smartphone.
(It is designed for devices such as those equipped with a Septentrio Mosaic module or u-blox ZED-F9P module.)

Observation data is recorded on the smartphone (specified by file selection) in SBF format for JPS GNSS receivers (QZR-SP: equipped with a Septentrio Mosaic module) and in UBX format for JPS GNSS receivers (JPS-9P: equipped with a u-blox ZED-F9P module).

Observation data (SBF or UBX format) can be converted to RINEX format using JPS's RawGNSS to RINEX software (freely available for Windows PCs) for further use.

In addition, the observer name, organization name, marker name, marker number, antenna height, and antenna offsets E and N, which are part of the header information in the RINEX format, can be saved or loaded as a JSON file.
By loading the file into the aforementioned Windows PC software "RawGNSS to RINEX" and converting it to RINEX format, it can be used as a RINEX file including header information.

For more information, please refer to the link below.
https://www.qzss4survey.com/jps/static-tools