Australia will host two U.S. space surveillance systems as part of closer military ties agreed to Wednesday at a bilateral security summit.

The new cooperation on space is one of a string of enhanced engagements agreed on at an annual summit attended by U.S. Secretary of State Hillary Rodham Clinton, U.S. Defense Secretary Leon Panetta and their Australian counterparts.

The two militaries have agreed that Australia will operate a U.S. Air Force C-band ground-based radar system near the northwestern town of Exmouth.