Who Scottish radar pioneer?

According to http://clyde-valley.com/awatsonwattrobert/index.htm "Scottish inventor Robert Watson-Watt who was born in Brechin in 1892, was the pioneer of radar. He worked out that an aircraft could be tracked by radio signals and recommended a national system of radar defences. These played a vital part in World War II, most notably in 1942's Battle of Britain. This acheivment resulted in the pioneer receiving a Knighthood for his creation. Watson-Watt died in Inverness. "