The aim of the EGNOS programme is to improve the quality of open signals from existing global navigation satellite systems ('GNSS') as well as those from the open service offered by the system established under the Galileo programme, when they become available.
Is é is aidhm do chóras EGNOS feabhas a chur ar cháilíocht na gcomharthaí oscailte ó na córais dhomhanda um loingseoireacht satailíte atá ann cheana ('GNSS') agus ar na comharthaí sin ón tseirbhís oscailte a thairgtear leis an gcóras a bunaíodh faoi chlár Galileo, nuair a bheidh siad ar fáil.