A measurement is carried out on a medium that propagates energy in a selected form by applying energy in the selected form to the medium, the power varying as a function of time in accordance with the elements of two Golay complementary sequences where one kind of element is represented by zero power...http://www.google.de/patents/US4743753?utm_source=gb-gplus-sharePatent US4743753 - Method and apparatus for carrying out fiber optic time domain reflectomery wherein Golay complementary sequences are applied
