A VLA survey, or Very Large Array survey, is a type of astronomical survey that uses the Very Large Array (VLA) radio telescope to observe a large area of the sky in radio wavelengths. The VLA is a collection of 27 radio antennas located in New Mexico, USA, that can be configured in different ways to provide high-resolution images of astronomical objects. VLA surveys are typically used to study a variety of astronomical phenomena, including the distribution of galaxies, the structure of molecular clouds, the properties of pulsars, and the emission from active galactic nuclei. By observing the sky at radio wavelengths, VLA surveys can reveal important information about the physical processes occurring in the universe, such as the formation and evolution of galaxies, the behavior of black holes, and the nature of interstellar gas and dust.