Abstract :
In March 1942, the first radar aid to navigation GEE was introduced. However, GEE could be jammed, its range was limited and positional accuracy was not good enough for the needs of the RAF. Against this background H2S was developed, and the paper describes the early research and operational work carried out on the system.
Journal_Title :
Physical Science, Measurement and Instrumentation, Management and Education - Reviews, IEE Proceedings A
