The Brazilian Decimetric Array (BDA) is a 26-element radio telescope interferometer located in the municipality of Cachoeira Paulista in the state of São Paulo, Brazil.

It is capable of performing both solar and stellar observations in three bands: 1.2 - 1.7, 2.8 and 5.6 GHz.

The BDA will obtain radio images from the sun with a spatial resolution ~4x6 arc seconds.

The dishes were originally installed at the National Institute for Space Research (INPE) campus in São José dos Campos in 2003 for testing.

[1] The BDA is the result of efforts of Brazilian scientists in collaboration with outstanding international astronomers, namely: The BDA, when completed, will be open to the entire scientific community for use for both solar and non-solar observations[1] and studies of space weather [4] phenomena.