First-principles based LIDAR simulation environment for scenes with participating mediums

Daniel D. Blevins; Scott D. Brown; John R. Schott

doi:10.1117/12.665958

19 May 2006 First-principles based LIDAR simulation environment for scenes with participating mediums

Daniel D. Blevins, Scott D. Brown, John R. Schott

Proceedings Volume 6214, Laser Radar Technology and Applications XI; 62140G (2006) https://doi.org/10.1117/12.665958
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

Employing a modified photon mapping technique that originated within the computer graphics community, a first-principle based elastic LIDAR model was developed within the Digital and Remote Sensing Image Generation (DIRSIG) framework that calculates time-gated photon counts at a sensor from topographic reflections and multiply scattered returns. The LIDAR module handles a wide variety of complicated scene geometries, diverse surface and participating media optical characteristics, multiple bounce and multiple scattering effects, and a variety of source and sensor models. This flexible modeling environment allows the researcher to evaluate sensor design trades for topographic systems and the impact that scattering constituents (e.g. water vapor, dust, sediment, soot, etc.) could have on a Differential Absorption LIDAR (DIAL) system's ability to detect and quantify constituents of interest within volumes including water and atmospheric plumes. This paper will present the numerical approaches employed to predict sensor reaching photon counts including specific approaches adopted to model multiple scattering and absorption within a plume. These approaches will be discussed and benchmarked against analytically predicted results using a non-stationary, diffusion approximation and a multiple scattering LIDAR equation. The analytical development and consistency of the modified photon mapping method with the underlying physics and radiative transfer theory for participating media is also presented. A representative dataset generated by DIRSIG of a DIAL system will be presented and analyzed for a synthetic scene containing a factory stack plume containing absorption and scattering effluents.

Citation Download Citation

Daniel D. Blevins, Scott D. Brown, and John R. Schott "First-principles based LIDAR simulation environment for scenes with participating mediums", Proc. SPIE 6214, Laser Radar Technology and Applications XI, 62140G (19 May 2006); https://doi.org/10.1117/12.665958

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