In order to monitor satellites and other objects in space, the Ministry of Defence plans to construct 27 radar arrays at Cawdor Barracks in Brawdy, Pembrokeshire.
The dishes, which will be located extremely close to the Pembrokeshire Coast National Park, will be 66 feet (20 meters) high and 49 feet (15 meters) wide.
The US, Australia, and the UK government form the trilateral AUKUS security alliance, which includes the Deep Space Advanced Radar Capability (DARC) program.
Campaigners warned the measures will harm local companies, local animals, and local citizens’ health at a meeting on Thursday in Solva, Pembrokeshire.
Campaigner Jim Scott claimed that 100 trucks a day could travel through Newgale to build the site, and it was a huge infrastructure project.
Five thousand people have signed an online petition opposing DARC in Pembrokeshire.
Roy Jones, founder of the Pembrokeshire Against the Radar movement which campaigned against previous plans for a radar installation at St Davids Airfield in 1990-1991 asked the meeting whether people wanted an “American military installation designed to dominate space” in a “sacred place”.
Keith Griffiths, the founder of three local luxury hotels, was also opposed to DARC, said Emma Bowen, a general manager at his Retreats Group.
Ms Bowen questioned whether visitors would choose to visit an area which had 27 radar structures.
