ASR-11

[3] Much like the previous ASR-9, the ASR-11 has been deployed around airport terminals across the United States to meet the requirements of a digital, automated air traffic monitoring system.

The main purpose of the ASR-11 is to replace aging radar systems at airfields that did not receive the ASR-9, as well as use across the world by the United States Military.

Transmitted electromagnetic signals reflect off the surface of an aircraft that is within sixty nautical miles of the radar location.

Installing additional radar equipment to the same antenna is required for close range location and weather detection.

Reducing the number of pulses sent out by the radar system also has a direct effect on the Doppler resolution, resulting in a decreased ability to process live weather conditions.