THE ROLE OF RECEIVER MEMORY ON THE DETECTION OF TRANSIENT SIGNALS.
DUKE UNIV DURHAM N C DEPT OF ELECTRICAL ENGINEERING
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The purpose of this report is to further the theory of signal detectability in underwater acoustics by investigating the role of receiver memory in detecting recurrent transient signals. This type of signals occurs in active and passive sonar as well as radar. The work deals with mathematical models of the signal and noise. The results provide initial guidelines as to the tradeoff between receiver memory complexity and detection performance. The detection of one of M transient signals that recurs randomly in the presence of noise is investigated. The signal ensemble consists of time sporadically recurrent binary components. The optimum likelihood ratio detector can be a sequential realization for this signal process requiring a rapidly expanding memory as the component ensemble size increases. Based on the Receiver Operating Characteristic ROC curve evaluation, a reduced-memory detector has been derived and evaluated. Author
- Numerical Mathematics
- Computer Programming and Software
- Computer Hardware