openvlbi is an open source library and application suite for astronomical interferometry.
Interferometry is a technique that combines the electromagnetic beam or stream interference from more receivers or sensors into a single signal or coherence degree. A 2d projection plot of the perspective visibilities of the object subject to observation from different locations (space domain Fourier plane dependent to the distance between the receivers) shows the spatial distribution of the light or energy irradiation over the observatories sites
openvlbi offers functions to applications that use it to make interferometry simpler and faster.
The application suite is composed by a client application which opens a shell and can serve it to more other client applications. Client applications usually are linked to other libraries and with libvlbi, or drivers that permit the capture of the streams to be correlated by the central server. The central server offers a shell that connects to the various clients and correlates using the library streams captured from INDI servers by adding them using the vlbi_server utilities.