Clutter can also be returned from man-made objects such as buildings and, intentionally, by radar countermeasures such as chaff. Noise can be generated by external sources, most significantly the natural thermal radiation of the background surrounding the goal of interest. In trendy radar systems, the internal noise is typically about equal to or decrease than the exterior noise.
NEC assigned Kinji Satake of their Research Institute to develop a system called the Bi-static Doppler Interference Detector . In 1938, engineers from the Research Office of Nippon Electric Company had been making coverage exams on high-frequency transmitters when fast fading of the sign was noticed.
In 1915, Robert Watson Watt joined the Meteorological Office as a meteorologist, working at an outstation at Alder...Read More