Appendix D Acronyms and Glossary of Terms


Active Detectors:

detectors that create an optical signal by probing a scene with a light source (i.e., a laser); lidar is an example of such a detector.

Aerosol:

small solid particles or droplets suspended in a gas or vapor.

Albedo:

the ratio of light scattering to the sum of absorption plus scattering.

Artemis:

a CWA standoff detection system designed to augment existing CWA detection systems to provide a theater-wide capability of near real-time detection and warning.


Blackbody:

an object that completely absorbs incident radiation of all wavelengths and emits radiation according to Planck’s law.

BMI:

Battelle Memorial Institute.


CBDP:

Chemical and Biological Defense Program.

Chemometrics:

the application of any of a variety of multivariate algorithms to data from chemical instruments to perform qualitative or quantitative analysis.

Concomitants:

compounds that may be present under battlefield conditions—such as adhesives, thickeners, and propellants—whose spectra may interfere with detection of target chemicals.

CWA:

chemical warfare agent.


DIAL:

differential absorption lidar—lidar technique based on transmitting at least two wavelengths of light that are absorbed to different degrees by the target gas.

DoD:

Department of Defense.

DTRA:

Defense Threat Reduction Agency—a department within the DoD.

DUSA-OR:

deputy under secretary of the army for operations research


FOV:

Field of view—angular breadth that can be imaged by the system (radians).



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement



Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.

OCR for page 52
Appendix D Acronyms and Glossary of Terms Active Detectors: detectors that create an optical signal by probing a scene with a light source (i.e., a laser); lidar is an example of such a detector. Aerosol: small solid particles or droplets suspended in a gas or vapor. Albedo: the ratio of light scattering to the sum of absorption plus scattering. Artemis: a CWA standoff detection system designed to augment existing CWA detection systems to provide a theater-wide capability of near real-time detection and warning. Blackbody: an object that completely absorbs incident radiation of all wavelengths and emits radiation according to Planck’s law. BMI: Battelle Memorial Institute. CBDP: Chemical and Biological Defense Program. Chemometrics: the application of any of a variety of multivariate algorithms to data from chemical instruments to perform qualitative or quantitative analysis. Concomitants: compounds that may be present under battlefield conditions—such as adhesives, thickeners, and propellants—whose spectra may interfere with detection of target chemicals. CWA: chemical warfare agent. DIAL: differential absorption lidar—lidar technique based on transmitting at least two wavelengths of light that are absorbed to different degrees by the target gas. DoD: Department of Defense. DTRA: Defense Threat Reduction Agency—a department within the DoD. DUSA-OR: deputy under secretary of the army for operations research FOV: Field of view—angular breadth that can be imaged by the system (radians).

OCR for page 52
Ground truth: measurement that allows a particular parameter to be accurately known. Henry’s law: the pressure of a gas above a solution is proportional to the concentration of the gas in solution. Interferents: chemicals that in some way interfere with the detection of target chemicals; this interference can be spectral (spectral signals that are similar to the target chemical), chemical (materials that react in the atmosphere with the target chemical), or physical (materials that change the physical form of the target chemical by precipitation, adsorption, etc.). JSLSCAD: Joint Service Lightweight Standoff Chemical Agent Detector. Lidar: light detection and ranging—an active detection technique using a laser-like beam as the transmitter. M21 RSCAAL: Remote Sensing Chemical Agent Alarm. MCAD: Man-portable Chemical Agent Detector. Mie scattering: scattering of radiation by solid particles or liquid droplets the diameters of which are approximately equal to the wavelength of the radiation. Neural network: a calibration algorithm based on the concept of connectivity of modes. By constructing all possible connections between nodes, all possible relationships between input data and the final desired results can be explored. NRC: National Research Council. ORD: Operational Requirements Document. Passive detector: detectors that require no action on the part of the operator to generate the analytical signal. Simulant: a molecule having either spectroscopic or physical properties similar to the corresponding properties of a CWA.

OCR for page 52
This page in the original is blank.