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<p>The RINEX format has been around for many decades, providing an essential element to process GNSS data. Going from a RINEX file to a GNSS solution requires however a number of additional computation steps, in order to compute corrections to be applied to the GNSS observations, or information used in the estimation algorithm such as the Jacobian matrix of the observation models or weights attributed to a particular GNSS observation. This essential information is not readily available in existing GNSS open-source software. Our tool prx is an open-source python library that processes RINEX observation files, computes the typical parameters required by GNSS positioning algorithms and provides them to the user in a csv file. By providing such data, we propose a tool for GNSS researchers and engineers that will help dealing with low-level GNSS data processing, so that they can focus on positioning algorithms. This article provides information about the parameters computed by prx, and provides a comparison to rtklib, a widespread reference tool in the GNSS domain.</p>

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PRX: a python RINEX pre-processing tool to facilitate raw GNSS observation processing

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Paul Thevenon,
  • Jan Bolting

摘要

The RINEX format has been around for many decades, providing an essential element to process GNSS data. Going from a RINEX file to a GNSS solution requires however a number of additional computation steps, in order to compute corrections to be applied to the GNSS observations, or information used in the estimation algorithm such as the Jacobian matrix of the observation models or weights attributed to a particular GNSS observation. This essential information is not readily available in existing GNSS open-source software. Our tool prx is an open-source python library that processes RINEX observation files, computes the typical parameters required by GNSS positioning algorithms and provides them to the user in a csv file. By providing such data, we propose a tool for GNSS researchers and engineers that will help dealing with low-level GNSS data processing, so that they can focus on positioning algorithms. This article provides information about the parameters computed by prx, and provides a comparison to rtklib, a widespread reference tool in the GNSS domain.