Generalized Kirchhoff approach to the ocean surface‐scatter communication channel. Part II: Second‐order functions
Ziomek, Lawrence J.
MetadataShow full item record
Three second‐order functions which characterize the ocean surface‐scatter communication channel are derived from the transfer function of the ocean surface. These second‐order functions include the two‐frequency correlation function or the two‐frequency mutual coherence function, the scattering function, and the power spectral density function of the scattered acoustic pressure field. These functions are shown to be dependent upon the general form of the directional wavenumber spectrum. Both the slightly rough and very rough surface cases are included. The interrelationships which exist amongst these functions are demonstrated. As an example, the power spectral density function is computed for the very rough surface case using the Neumann–Pierson directional wavenumber spectrum.
The article of record as published may be found at https://doi.org/10.1121/1.387847
Showing items related by title, author, creator and subject.
Bang, H.; Agrawal, B.N. (1993);A closed loop switching function for single-axis slew maneuvers of spacecraft using on-off thrusters is investigated by analytical simulations and experimental demonstrations. The proposed switching function provides ...
Ziomek, Lawrence J.; Sibul, Leon H. (Acoustical Society of America, 1982);Signal‐to‐interference ratio (SIR) expressions for a doubly spread target are derived for both broadband and narrow‐band transmit signals. For broadband signals, the SIR is dependent upon target and reverberation two‐frequency ...
O'Dowd, Timothy R. (Monterey, California. Naval Postgraduate School, 2010-12);Linear cryptanalysis attacks are a threat against cryptosystems. These attacks can be defended against by using combiner functions composed of highly nonlinear Boolean functions. Bent functions, which have the highest ...