Radar synonyms include words such as sonar, lidar, and radiolocation. Sonar is a type of radar that uses sound waves instead of radio waves. Lidar is also a type of radar that uses laser beams to detect objects. Radiolocation is the process of using radio waves to locate an object. Other synonyms for radar include electronic detection and ranging (EDR), radio detection and ranging (RDR), and microwave detection and ranging (MDR). Each of these methods has their own unique strengths and weaknesses in their ability to detect and locate objects. However, all synonyms for radar have the same basic function of using energy waves to locate and track objects in their path.