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The United States Naval Observatory ( USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. [2] Established in 1830 as the Depot of Charts and Instruments, it is one of the oldest scientific agencies in the United States ...
Demand Assigned Multiple Access. Demand Assigned Multiple Access (DAMA) is a technology used to assign a channel to clients that do not need to use it constantly. DAMA systems assign communication channels based on news issued from user terminals to a network security system. When the circuit is no longer in use, the channels are again returned ...
e. Pine Gap is a joint United States-Australian satellite intelligence gathering and signals intelligence surveillance base and Australian Earth station approximately 18 km (11 mi) south-west of the town of Alice Springs. It is jointly operated by Australia and the United States, and since 1988 it has been officially called the Joint Defence ...
Overview Entrance to Changi Naval Base (CNB) in 2007. Its 6.2 km (3.9 mi) berthing space can accommodate an aircraft carrier and is often used by visiting ships of the Royal Navy as part of the Five Power Defence Arrangements (FPDA) and United States Navy, as a result of the signing of the addendum to the 1990 United States–Singapore Memorandum of Understanding on 10 November 1990, which ...
An unmanned surface vehicle, unmanned surface vessel or uncrewed surface vessel (USV), [2] [3] colloquially called a drone boat, drone ship [4] or sea drone, is a boat or ship that operates on the surface of the water without a crew. [5] USVs operate with various levels of autonomy, from remote control [6] to fully autonomous surface vehicles ...
Powered targets. A U.S. Navy QST-35 SEPTAR. In the U.S. Navy, a Seaborne Powered Target (SEPTAR) is an unmanned surface vehicle used as the naval counterpart of a target drone. They are remote-controlled, and all but the smallest can be equipped with electromagnetic emitters to appear as a larger ship on sensors. [1]
The automatic identification system ( AIS) is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS). When satellites are used to receive AIS signatures, the term Satellite-AIS (S-AIS) is used. AIS information supplements marine radar, which continues to be the primary method of collision ...
t. e. USS Gerald R. Ford (CVN-78), foreground, alongside USS Harry S. Truman (CVN-75), rear, in 2020. USS Enterprise (CVN-65), foreground, and USS Dwight D. Eisenhower (CVN-69), rear, in 2011. USS Saratoga (CV-60), top, with USS John F. Kennedy (CV-67), center, in 1990. Aircraft carriers are warships that act as airbases for carrier-based ...