Underwater optical impulse response measurement using a chaotic lidar sensor

Luke K. Rumbaugh; Mahesh K. Banavar; William D. Jemison

doi:10.1117/12.2179875

19 May 2015 Underwater optical impulse response measurement using a chaotic lidar sensor

Luke K. Rumbaugh, Mahesh K. Banavar, William D. Jemison

Proceedings Volume 9459, Ocean Sensing and Monitoring VII; 945909 (2015) https://doi.org/10.1117/12.2179875
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

This paper explores the use of a recently developed chaotic lidar sensor to perform impulse response measurements underwater. The sensor’s measured system impulse response, which approximates a thumbtack function with a 1 ns peak width, is used with an ocean impulse response simulator to predict the chaotic lidar’s expected performance underwater. A calibration routine is developed to compensate for the finite resolution and sidelobes in the sensor’s system impulse response, improving the accuracy of the simulated chaotic lidar results. In an example application of water turbidity measurement, the extinction coefficient of water, c, is extracted from simulated chaotic lidar impulse responses with an average error of 0.03/m over a range of turbidities from c=0.1/m to c=0.3/m. Simulations are also presented to demonstrate that the chaotic lidar sensor impulse response can simultaneously detect multiple reflective elements and the volumetric backscatter response with a 1 ns temporal resolution. Laboratory water tank measurements are performed to validate the simulation approach, and the experimental chaotic lidar measurements are in reasonable agreement with the simulated results.

Citation Download Citation

Luke K. Rumbaugh, Mahesh K. Banavar, and William D. Jemison "Underwater optical impulse response measurement using a chaotic lidar sensor", Proc. SPIE 9459, Ocean Sensing and Monitoring VII, 945909 (19 May 2015); https://doi.org/10.1117/12.2179875

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