Theoretical Studies and Data Analysis of Wave Propagation in Random Media
Final technical rept. 1 Dec 1983-30 Sep 1985
LA JOLLA INST CA CENTER FOR THE STUDY OF NONLINEAR DYNAMICS
Pagination or Media Count:
The objective of this work was to develop a general theoretical framework for calculating fluctuations of signals on waves propagated through random media WPRM and to apply this framework to sound through the ocean light through the atmosphere radio waves through the ionosphere, solar wind, or interstellar plasma and any other similar case of waves propagating through continuous media. Comparison with real data is an important aspect of the effort. This report will consist of a summary with list of references, followed by copies of the journal articles resulting from this contract that have been published, or have been submitted for publication. Some work in progress will not be included in detail here, since it will be discussed in the reports of future DARPA contracts. The two most common signals sent on a carrier are the phase and amplitude of a nearly monochromatic wave. If enough bandwidth is available, one can send a pulse, and one can speak of the intensity and arrival time of that pulse. The technical problem is then to explain the statistical behavior of the intensity and arrival time in terms of medium fluctuations, where the medium is described statistically, usually by a power spectrum covering a large dynamic range of scales.
- Statistics and Probability