ðə nˈuː spˈeɪs fˈɛns wʌz ɛnvˈɪʒənd təbi ɐ sˈɪstəm ʌv tˈuː ɔːɹ θɹˈiː ˈɛsbˈænd ɡɹˈaʊndbˈeɪst ɹˈeɪdɑːɹz dɪzˈaɪnd tə pɚfˈɔːɹm ʌŋkjˈuːd dɪtˈɛkʃən, tɹˈækɪŋ ænd ˈækjʊɹət mˈɛʒɚmənt ʌv ˈɔːɹbɪɾɪŋ spˈeɪs ˈɑːbdʒɛkts, ænd wʌz ɪntˈɛndᵻd tə ɹᵻplˈeɪs ðɪ ˈɛɹ fˈoːɹs spˈeɪs sɚvˈeɪləns sˈɪstəm, ɔːɹ vˌiːˌeɪtʃˈɛf fˈɛns, ðæt wʌz tɹænsfˈɜːd fɹʌmðə jˌuːˈɛs nˈeɪvi tə ðə jˌuːˈɛs ˈɛɹ fˈoːɹs ɪn tˈuː θˈaʊzənd fˈoːɹ.
The new Space Fence was envisioned to be a system of two or three S-band ground-based radars designed to perform uncued detection, tracking and accurate measurement of orbiting space objects, and was intended to replace the Air Force Space Surveillance System, or VHF Fence, that was transferred from the US Navy to the US Air Force in 2004.