Location Sensitivity in Multipath Environment

The work is concerned with the location of submerged objects when a bilinear approximation to the propagation velocity profile in the ocean is used. Contrasting with isovelocity profiles, there are available multiple refracted as well as reflected rays which when resolved provide the required information to determine the range and depth source parameters. The paper establishes the Cramer-Rao bounds for the errors associated with depth and range in positioning systems for a particular configuration, considering observations in a single sensor, for a multipath channel with a bilinear velocity profile.

[1]  D. F. Gingras.  The Effect of Mismatch on Array Processors with Normal Mode Replica Vectors , 1989 .

[2]  J. Moura,et al.  Passive systems theory with narrow-band and linear constraints: Part I - Spatial diversity , 1978, IEEE Journal of Oceanic Engineering.

[3]  Jose M. F. Moura,et al.  Sensitivity of range localization in a multipath environment , 1989, International Conference on Acoustics, Speech, and Signal Processing,.

[4]  P. Whittle.  The Analysis of Multiple Stationary Time Series , 1953 .

[5]  J. Moura,et al.  Passive systems theory with narrow-band and linear constraints: Part III - Spatial/Temporal diversity , 1979, IEEE Journal of Oceanic Engineering.

[6]  John P. Ianniello,et al.  Large and small error performance limits for multipath time delay estimation , 1986, IEEE Trans. Acoust. Speech Signal Process..

[7]  Benjamin Friedlander,et al.  Accuracy of source localization using multipath delays , 1988 .

[8]  Melvin J. Hinich,et al.  Maximum likelihood estimation of the position of a radiating source in a waveguide , 1979 .

[9]  José M. F. Moura,et al.  Optimal filtering in the presence of multipath , 1986 .

[10]  W. Kuperman,et al.  Matched field processing: source localization in correlated noise as an optimum parameter estimation problem , 1988 .

[11]  C. Clay,et al.  Optimum time domain signal transmission and source location in a waveguide , 1987 .

[12]  Van Trees,et al.  Detection, Estimation, and Modulation Theory. Part 1 - Detection, Estimation, and Linear Modulation Theory. , 1968 .