A radar altimeter is also called a radio altimeter (RALT), electronic altimeter, reflection altimeter. It is used to measure altitude above the terrain and beneath an aircraft or spacecraft. A radio altimeter is an airborne electronic device, which is capable of measuring the height of the aircraft. It is suitable device to measure the absolute altitude of the spacecraft or aircraft a... https://www.maximizemarketresearch.com/market-report/global-radar-altimeter-market/69689/