LESIA Observatoire de Paris-PSL CNRS vopdc cdpp Sorbonne Université cnes Université de Paris

JSON Implementation of Time-Frequency Radio Catalogues: TFCat

Friday 9 September 2022, by Baptiste Cecconi

TFCat (Time-Frequency Catalogue) is a data interchange format based on JSON. It defines several types of JSON objects and the manner in which they are combined to represent data about time-frequency features of a time spectrogram (a.k.a. dynamic spectrum), their properties, and their temporal and spectral extents.

Link to document

TFCat Specification version 1.0
TFCat Specification version 1.0

A up-to-date version is available online:


The authors acknowledge support from PADC and LESIA.


Any question or request should be addressed to contact.maser@obspm.fr


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