麻省理工大学接收机天线和信号

caroline11

Communications and sensing systems are ubiquitous. They are found in military, industrial, medical, consumer, and scientific applications employing radio frequency, infrared, visible, and shorter wavelengths. Even acoustic systems operate under similar principles. Communications examples range from optical fiber or satellite systems to wireless radio. Radio astronomy, radar, lidar, and sonar systems probe the environment and have counterparts in analytical instruments and memory systems used for a wide variety of purposes.