Development of a terahertz short range imaging model

Sean G. O'Brien; David H. Tofsted

doi:10.1117/12.673584

4 May 2006 Development of a terahertz short range imaging model

Sean G. O'Brien, David H. Tofsted

Proceedings Volume 6239, Targets and Backgrounds XII: Characterization and Representation; 623909 (2006) https://doi.org/10.1117/12.673584
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

A ray trace model was developed to simulate atmospheric effects upon short range imaging of a scene for a narrow frequency band centered at 650 GHz. The frequency chosen is in the vicinity of a terahertz frequency band atmospheric window. We describe the assumptions that went into this model, including the statistics for the density distribution of atmospheric water vapor, which is one of the main molecular absorbers in this spectral region. We also summarize the results of a measurement program in which point sensors (with a 20 Hz sampling rate) measured wind-advected water vapor density. We examine the validity of the atmospheric absorption statistics assumed in our imaging model through a spectral analysis of the temporal series for absorption coefficient derived from the water vapor density data.

Citation Download Citation

Sean G. O'Brien and David H. Tofsted "Development of a terahertz short range imaging model", Proc. SPIE 6239, Targets and Backgrounds XII: Characterization and Representation, 623909 (4 May 2006); https://doi.org/10.1117/12.673584

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