Title :
Coherence in signal processing: a fundamental redefinition
Author :
Marple, S. Lawrence, Jr. ; Marino, Claudio
Author_Institution :
Sch. of EECS, Oregon State Univ., Corvallis, OR, USA
Abstract :
The term "coherence" in the signal processing community has been defined for nearly 50 years in terms of a narrowband statistical power spectral density ratio. This definition is very limiting with modern digital electronics and sensor array technology that is very broadband and which uses sophisticated wideband modulations. In this paper, we provide a fundamental overhaul of the definition of coherence, with many specialized variations that revert to the old coherence definition in one case and that also handle the wideband cases as well.
Keywords :
array signal processing; signal sources; statistical analysis; coherent signal processing; fundamental overhauling; modern digital electronic; narrowband statistical analysis; power spectral density ratio; sensor array broadband technology; sophisticated wideband modulation; Array signal processing; Coherence; Dictionaries; Interference; Light sources; Narrowband; Radar signal processing; Sensor arrays; Signal processing; Wideband;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399297
