October 1994 VOLUME 19 NUMBER 4 IJOEDY(ISSN 0364-9059)


 SPECIAL ISSUE ON Advanced control and signal processing for oceanic applications

NONTECHNICAL CONTENT
Front cover and table of contents
Back cover

SPECIAL ISSUE PAPERS
Bjørn Jalving The NDRE-AUV flight control system 497
Inge Spangelo and Olav Egeland Trajectory planning and collision avoidance for underwater vehicles using optimal control 502
Ola-Erik Fjellstad and Thor I. Fossen Position and attitude tracking of AUV's: A quaternion feedback approach 512
J. V. Candy and E. J. Sullivan Model-based processing for a large aperture array 519
Guotong Zhou and Georgios Giannakis On estimating random amplitude-modulated harmonics using higher order spectra 529
Rafaat Khan, Brian Gamberg, Desmond Power, John Walsh, Barry Dawe, Wayne Pearson, and Dave Millan Target detection and tracking with a high frequency ground wave radar 540
Ken J. Hickey, Eric W. Gill, James A. Helbig, and John Walsh Measurement of ocean surface currents using a long-range, high-frequency ground wave radar 549
Titus K. Y. Lo, Henry Leung, and John Litva Artificial neural network for AOA estimation in a multipath environment over the sea 555

PAPERS
Daniel Sauter and Lindsay Parson Spatial filtering for speckle reduction, contrast enhancement, and texture analysis of GLORIA images 563
A. Caiti and T. Parisini Mapping ocean sediments by RBF networks 577
Sven Nordebo, Ingvar Claesson, and Sven Nordholm Adaptive beamforming: Spatial filter designed blocking matrix 583
Paul M. Baggenstoss On detecting linear frequency-modulated waveforms in frequency- and time-dispersive channels: Alternatives to segmented replica correlation 591
W. Kenneth Stewart, Dezhang Chu, Sandipa Malik, Steve Lerner, and Hanumant Singh Quantitative seafloor characterization using a bathymetric sidescan sonar 599
Shuozhong Wang, Mark L. Grabb, and Theodore G. Birdsall Design of periodic signals using FM sweeps and amplitude modulation for ocean acoustic travel-time measurements 611
Pierre Cervenka and Christian de Moustier Postprocessing and corrections of bathymetry derived from sidescan sonar systems: Application with SeaMARC II 619

COMMUNICATIONS
F. Andreucci and C. Camporeale On Doppler estimators performance losses in the presence of noise and equivocation 630
Yan W. Zhang and Yuan L. Ma An efficient architecture for real-time narrowband beamforming 635