WILDCAT chemical sensor development

David B. Cohn; Eric J. Griffin; Louis F. Klaras; Michael E. Ehritz; Cynthia R. Swim; Jay A. Fox

doi:10.1117/12.438194

22 August 2001 WILDCAT chemical sensor development

David B. Cohn, Eric J. Griffin, Louis F. Klaras, Michael E. Ehritz, Cynthia R. Swim, Jay A. Fox

Proceedings Volume 4378, Chemical and Biological Sensing II; (2001) https://doi.org/10.1117/12.438194
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

The WILDCAT sensor was developed to provide chemical detection and identification at large standoff ranges on the order of 20 km for concentration-path length product measurements and 5 km for range-resolved measurements. The transmitter is a wavelength agile CO₂ laser with output energy of 1 J/pulse at a repetition rate of 100 Hz. The laser wavelength can be shifted by a two-stage second harmonic generator and optical parametric oscillator to prove chemical absorption features outside the normal laser emission bands. The receiver is composed of a 60 cm dia. Cassegrain telescope and two-element HgCdTe detector that are integrated into a gimbal system for full hemispherical scanning. The laser/optical table and gimbal/telescope subsystems are connected by a rigid truss and all components are integrated into a transportable field test station. The data acquisition system is composed of 12 bit, 125 MHz analog-digital converters and a digital signal processor. Algorithms allow for real-time data processing and display of chemical concentration maps. All key transmitter and receiver components are capable of further development for compact, standalone sensors that can operate from fixed sites or mobile platforms, including aircraft, ships, and ground vehicles.

Citation Download Citation

David B. Cohn, Eric J. Griffin, Louis F. Klaras, Michael E. Ehritz, Cynthia R. Swim, and Jay A. Fox "WILDCAT chemical sensor development", Proc. SPIE 4378, Chemical and Biological Sensing II, (22 August 2001); https://doi.org/10.1117/12.438194

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