GNSS Software Defined Radio metadata standard published

From its HQ in Manassas, Virginia, on 17 March the US ION announced that the GNSS Software Defined Radio Metadata Standard document has been published in NAVIGATION: Journal of the Institute of Navigation’s Spring 2021 issue, Volume 68, No. 1, pp. 11-20. The Global Navigation Satellite Systems Software Defined Radio Sample Data Metadata Standard is the product of a three-year long effort and defines parameters and schema to express the contents of SDR sample data files. The standard promotes the interoperability of GNSS SDR data collection systems and processors.

In the past several years there has been a proliferation of software?defined radio (SDR) data collection systems and processing platforms designed for or applicable to satellite navigation (satnav) applications. These systems necessarily produce datasets in a wide range of different formats. To correctly interpret this SDR data, essential information such as the packed sample format and sampling rate is needed.

Communicating this metadata between creators and users has historically been an ad?hoc, cumbersome, and error?prone process. To address this issue, the satnav SDR community developed a metadata standard and normative software
library to automate this process, thus simplifying the exchange of datasets and promoting the interoperability of satnav SDR systems. The standard was ratified and formally accepted as an Institute of Navigation Standard in January 2020.

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