Title :
A new estimation technique for near-shore bathymetric measurements
Author :
Pillai, S. Radhakrishnan ; Oh, Hyun Seok
Author_Institution :
Adv. Dev., Zetron Inc., Redmond, WA, USA
Abstract :
A new technique for depth estimation in airborne laser bathymetry is proposed. The technique involves the transmission of a nonlinear frequency-modulated signal, the detection of the signal reflected by the ocean, and its processing using an appropriate matched filter. On the basis of this technique, a receiver can be constructed that offers improved resolution between the signals reflected by the surface and bottom of the ocean which translates into improved accuracy of depth measurement
Keywords :
airborne radar; bathymetry; filtering theory; frequency modulation; matched filters; measurement by laser beam; optical radar; parameter estimation; radar resolution; spatial variables measurement; airborne laser bathymetry; depth estimation; depth measurement accuracy; matched filter; near-shore bathymetric measurements; nonlinear frequency-modulated signal transmission; ocean bottom; ocean reflected signal detection; ocean surface; receiver; resolution; signal processing; Bandwidth; Chirp; Frequency; Matched filters; Oceanographic techniques; Oceans; Sea measurements; Sea surface; Signal processing; Signal resolution;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.761345
