Progress in research of weak signal

Abstract

In this paper, the research progress of analysis of weak signals, an important area of signal analysis, is reviewed with respect of weak signals' generation, identification and application. This paper goes over the main elements of domestic and foreign research advances, and points out the limitations of the research viewing angles and the description methods. On these bases, this paper proposes that further research directions will focus more on application studies in combination with enterprise practice, operation management, decision-making process and market forecast. These applied studies will facilitate the applications of signal analysis method on competitive intelligence. © 2011 Springer-Verlag.