Method and apparatus for carrying out fiber optic time domain reflectomery wherein Golay complementary sequences are applied

摘要: A measurement is carried out on a medium that propagates energy in selected form by applying the to medium, power varying as function of time accordance with elements two Golay complementary sequences where one kind element represented zero and other predetermined non-zero level successive each sequence are applied at uniform intervals. Energy emitted from received, variation correlated was applied. Preferably, which varied both directly, sequences, derivative fashion, logical complements sequences.