Measurement of ocean water optical properties and seafloor reflectance with scanning hydrographic operational airborne lidar survey (SHOALS): I. Theoretical background

Yuri I. Kopilevich; Viktor I. Feygels; Grady H. Tuell; Alexey Surkov

doi:10.1117/12.618923

22 August 2005 Measurement of ocean water optical properties and seafloor reflectance with scanning hydrographic operational airborne lidar survey (SHOALS): I. Theoretical background

Yuri I. Kopilevich, Viktor I. Feygels, Grady H. Tuell, Alexey Surkov

Author Affiliations +

Proceedings Volume 5885, Remote Sensing of the Coastal Oceanic Environment; 58850D (2005) https://doi.org/10.1117/12.618923
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In an earlier work, we have proposed a concept for estimation of ocean optical properties with a multiple field-of-view bathymetric lidar. In this paper, we consider an implementation of this idea using SHOALS. The SHOALS design uses two receivers for depth measurement: a shallow-water, APD receiver with an 18 mrad FOV; and a deep-water PMT receiver with a 40 mrad FOV. They simultaneously record the optical power returned from a single pulse of the laser, and consequently provide the desired measurements. Here, we present an algorithm for the estimation of inherent optical properties (IOPs) in the upper ocean layer which is based on "multiple-forward-single-backscattering" model of the returned power, and an analytical solution to the radiative transfer equation (RTE) for finite sounding beam propagation in the small-angle-scattering approximation. Using this algorithm, we have developed an approach for estimation of the backscattering coefficient, the beam attenuation coefficient, the single-scattering albedo, and the VSF asymmetry coefficient, by fitting simulated waveforms to actual data measured by the two receivers. We also present an approach for improvement in estimates of bottom reflectance which compensates for pulse stretching induced by angle of incidence effects.

Citation Download Citation

Yuri I. Kopilevich, Viktor I. Feygels, Grady H. Tuell, and Alexey Surkov "Measurement of ocean water optical properties and seafloor reflectance with scanning hydrographic operational airborne lidar survey (SHOALS): I. Theoretical background", Proc. SPIE 5885, Remote Sensing of the Coastal Oceanic Environment, 58850D (22 August 2005); https://doi.org/10.1117/12.618923

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available