To help keep an eye on the South China Sea region.
The U.S. Navy recently approved a contract for the construction of reinforced concrete pads and foundations for installing a tactical Over-the-Horizon Radar on the Republic of Palau, the Department of Defense said in aThe Republic of Palau is an archipelago of over 500 islands covering 177 square miles . With a population of just over 18,000 people, the country has a military relationship with the U.S., per the 1994 Compacts of Free Association agreement.The U.S.
With changing geopolitical situations and advances in computing capabilities, the OTHR is set to make a comeback as it can address the limitations of range in current radars. The range for OTHRs can extend into thousands of miles as it consists of an extensive array of antennae spread out over an area, with the transmission and receiving equipment placed geographically away from each other.
The skywave type of OTHR works by bouncing off radio waves in the ionosphere. The radio waves travel to the coverage area and return the same after hitting their targets on the ground. The angle at which these waves hit the ionosphere determines their range; therefore, the radar's placement in relation to the targeted coverage area is important.
Together, the two types of OTHR can be an effective tool to monitor contested areas for adversarial activity, look for signs of hypersonic missiles, ships, and aircraft, and serve as an early warning system,
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