Title :
Application of wideband signals to airborne laser bathymetry
Author :
Pillai, S. Radhakrishnan ; Antoniou, Andreas
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
A new technique for the estimation of time delay for ocean depth measurement has been introduced. The technique involves the transmission of a chirp-like signal and the processing of the reflection by an appropriate matched filter. The proposed scheme improves the resolution between the blue-green surface and bottom returns thereby enhancing the accuracy of the time-delay estimation. It is shown here that a chirp-like signal in conjunction with an appropriate matched filter can improve the resolution between the surface and bottom reflection of a bathymetric signal
Keywords :
bathymetry; geophysical signal processing; geophysical techniques; matched filters; oceanographic techniques; optical information processing; optical radar; remote sensing by laser beam; seafloor phenomena; airborne laser bathymetry; blue-green surface return; bottom return; chirp-like signal; geophysical measurement technique; laser remote sensing; lidar; matched filter; ocean depth; ocean depth measurement; optical signal processing; reflection; sea coast; seafloor topography; time delay; time-delay estimation; wideband signal; Chirp; Delay effects; Delay estimation; Matched filters; Oceanographic techniques; Oceans; Optical reflection; Sea surface; Signal resolution; Wideband;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516544
