Fort Belvoir, VA, United States
Fort Belvoir, VA, United States

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ARLINGTON, Va.--(BUSINESS WIRE)--CACI International Inc (NYSE: CACI) announced today that it was awarded a $31 million contract to support modeling and simulation technology for the U.S. Army Research, Development, and Engineering Command’s (RDECOM) Communications-Electronics Research, Development, and Engineering Center (CERDEC) Night Vision and Electronic Sensors Directorate (NVESD). This three-year task order, awarded under the R2-3G contract vehicle, represents new business in CACI’s Surveillance and Reconnaissance market area. CERDEC NVESD conducts research and development of advanced night vision and other sensor technologies, such as infrared weapon sights, and long-range surveillance and target acquisition systems, which enhance our Armed Forces’ operational advantage in daytime, nighttime, and limited visibility conditions. Under this contract, CACI will support the development of realistic electro-optic/infrared and SIGINT payload modeling and simulation capabilities and training systems. These training systems will enhance the readiness of the Army’s Airborne Intelligence, Surveillance, and Reconnaissance (A-ISR) tactical units, resulting in improved situational awareness to Army brigade combat teams. The company will also provide pilots and trainers to develop and execute A-ISR programs of instruction. John Mengucci, CACI’s Chief Operating Officer and President of U.S. Operations, said, “As a pioneer in modeling and simulation technology, CACI will leverage our extensive subject matter expertise and knowledge of this customer’s mission applications to develop highly realistic simulations in support of Army airborne intelligence, surveillance, and reconnaissance operations.” According to CACI President and Chief Executive Officer Ken Asbury, “With this award for new work, CACI is proud to expand our ongoing partnership with the U.S. Army’s Night Vision and Electronic Sensors Directorate. It continues CACI’s commitment to providing our government customers with the tools and resources to gather actionable intelligence for military decision-makers.” CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. A Fortune magazine World’s Most Admired Company in the IT Services industry, CACI is a member of the Fortune 1000 Largest Companies, the Russell 2000 Index, and the S&P SmallCap600 Index. CACI’s sustained commitment to ethics and integrity defines its corporate culture and drives its success. With approximately 20,000 employees worldwide, CACI provides dynamic career opportunities for military veterans and industry professionals to support the nation’s most critical missions. Join us! There are statements made herein which do not address historical facts, and therefore could be interpreted to be forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such statements are subject to factors that could cause actual results to differ materially from anticipated results. The factors that could cause actual results to differ materially from those anticipated include, but are not limited to, the risk factors set forth in CACI’s Annual Report on Form 10-K for the fiscal year ended June 30, 2016, and other such filings that CACI makes with the Securities and Exchange Commission from time to time. Any forward-looking statements should not be unduly relied upon and only speak as of the date hereof.

Ricciardi P.,National Gallery of Art | Delaney J.K.,National Gallery of Art | Delaney J.K.,George Washington University | Facini M.,National Gallery of Art | And 4 more authors.
Angewandte Chemie - International Edition | Year: 2012

In situ analysis: Near infrared imaging spectroscopy (1000-2500 nm) is used to map the use of a fat-containing paint binder, likely egg yolk, in situ on a work of art for the first time. The identification of the use of egg tempera on a 15th century illuminated manuscript leaf (Praying Prophet by Lorenzo Monaco) sheds light on the relationship between painters and illuminators and can inform preservation decisions. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Leach J.H.,Night Vision and Electronic Sensors Directorate | Chinn S.R.,Fulcrum Company | Goldberg L.,Night Vision and Electronic Sensors Directorate | Mathews S.A.,Catholic University of America
Applied Optics | Year: 2015

A rangefinder based on a fiber-coupled, monostatic system that transmits and receives through the same aperture has been developed. Some of the advantageous characteristics include elimination of the requirement for precision alignment of the receiver detector and smaller size than bistatic systems using separate transmit and receive apertures. Because there is no parallax between transmit and receive beam paths, optimum receiver alignment is maintained for all ranges. The system operates at 50 kpps and uses a 27 mm diameter/40 mm focal length transmit/receive lens. The standard deviation range precision of the system is 7.8 mm at 50 m with 3.3 ?J pulses. © 2015 Optical Society of America.

Oreifej O.,University of Central Florida | Shu G.,University of Central Florida | Pace T.,Night Vision and Electronic Sensors Directorate | Shah M.,University of Central Florida
Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition | Year: 2011

Several attempts have been lately proposed to tackle the problem of recovering the original image of an underwater scene using a sequence distorted by water waves. The main drawback of the state of the art [18] is that it heavily depends on modelling the waves, which in fact is ill-posed since the actual behavior of the waves along with the imaging process are complicated and include several noise components; therefore, their results are not satisfactory. In this paper, we revisit the problem by proposing a data-driven two-stage approach, each stage is targeted toward a certain type of noise. The first stage leverages the temporal mean of the sequence to overcome the structured turbulence of the waves through an iterative robust registration algorithm. The result of the first stage is a high quality mean and a better structured sequence; however, the sequence still contains unstructured sparse noise. Thus, we employ a second stage at which we extract the sparse errors from the sequence through rank minimization. Our method converges faster, and drastically outperforms state of the art on all testing sequences even only after the first stage. © 2011 IEEE.

Thotla V.,Missouri University of Science and Technology | Ghasr M.T.A.,Missouri University of Science and Technology | Zawodniok M.,Missouri University of Science and Technology | Jagannathan S.,Missouri University of Science and Technology | Agarwal S.,Night Vision and Electronic Sensors Directorate
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Traditional approach of locating devices relies on "tagging" with a special tracking device, for example GPS receiver. This process of tagging is often impractical and costly since additional devices may be necessary. Conversely, in many applications it is desired to track electronic devices, which already emit unintentional, passive radio frequency (RF) signals. These emissions can be used to detect and locate such electronic devices. Existing schemes often rely on a priori knowledge of the parameters of RF emission, e.g. frequency profile, and work reliably only on short distances. In contrast, the proposed methodology aims at detecting the inherent self-similarity of the emitted RF signal by using Hurst parameter, which (1) allows detection of unknown (not-pre-profiled) devices, (2) extends the detection range over signal strength (peak-detection) methods, and (3) increases probability of detection over the traditional approaches. Moreover, the distance to the device is estimated based on the Hurst parameter and passive RF signal measurements such that the detected device can be located. Theoretical and experimental studies demonstrate improved performance of the proposed methodology over existing ones, for instance the basic received signal strength (RSS) indicator scheme. The proposed approach increases the detection range by 70%, the probability of detection by 60%, and improves the range estimation and localization accuracy by 70%. © 2012 SPIE.

Pellegrino J.G.,Night Vision and Electronic Sensors Directorate | Dewames R.,Night Vision and Electronic Sensors Directorate | Perconti P.,Night Vision and Electronic Sensors Directorate | Billman C.,Night Vision and Electronic Sensors Directorate | Maloney P.,Night Vision and Electronic Sensors Directorate
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Mid wave infrared (MWIR) imaging in the 3-5 um spectral band has traditionally been performed by InSb sensors. InSb technology is presently limited to a near 80K operating temperature and the hunt has been on for a higher operating temperature (HOT) technology that does as well at 150K as InSb at 80K, but with reduced power requirements. Amongst these alternative technologies are photovoltaic sensors consisting of heterostructures of HgCdTe (MCT). In previous work we assessed the device performance of several alternative MWIR HOT technologies (MCT on Si, MCT on GaAs) as a function of operating temperature. In this work we compare the NEDT histograms for these alternative technologies with InSb to better understand how their performance can be improved at higher temperatures. We also present analysis formalism for quantitatively assessing the number of FPA pixels which reside in the central versus the shoulder portions of the histogram.Begin the Introduction two lines below the Keywords. The manuscript should not have headers, footers, or page numbers. It should be in a onecolumn format. References are often noted in the text1 and cited at the end of the paper. © 2012 SPIE.

Delaney J.K.,National Gallery of Art | Zeibel J.G.,Night Vision and Electronic Sensors Directorate | Thoury M.,National Gallery of Art | Littleton R.,Night Vision and Electronic Sensors Directorate | And 4 more authors.
Applied Spectroscopy | Year: 2010

Reflection imaging spectroscopy is a useful technique to remotely identify and map minerals and vegetation. Here we report on the mapping and identification of artists' materials in paintings using this method. Visible and infrared image cubes of Picasso's Harlequin Musician are collected using two hyperspectral cameras and combined into a single cube having 260 bands (441 to 1680 nm) and processed using convex geometry algorithms. The resulting 18 spectral end members are identified by comparison with library spectra, fitting by nonlinear mixing, and using results from luminescence imaging spectroscopy. The results are compared with those from X-ray fluorescence spectrometry, polarized light microscopy, and scanning electron microscopy-energy dispersive spectrometry (SEM/EDS). This work shows the potential of reflection imaging spectroscopy, in particular if the shortwave infrared region is included along with information from luminescence imaging spectroscopy. © 2010 Society for Applied Spectroscopy.

Leach J.H.,Night Vision and Electronic Sensors Directorate | Chinn S.R.,Fulcrum Company | Goldberg L.,Night Vision and Electronic Sensors Directorate
Conference on Lasers and Electro-Optics Europe - Technical Digest | Year: 2015

An all-fiber monostatic laser rangefinder, using a double cladding fiber to transmit and receive light through a single lens is described. Ranging to >50 m with 12 uJ, 8 ns, 1540 nm pulses is shown. The all-fiber system is compact and needs no precise receiver/transmitter beam alignment. © 2015 OSA.

The probability P(t) of target acquisition, for a single observer who has unlimited time to search a field of view (FOV) for a single target, is expressed in terms of search parameters P∞ and τ under conditions where these parameters are independent of time. It has been assumed that P ∞ has been determined for a particular target, scene clutter and imaging system and, for a given scenario, τ is determined empirically from P∞. The equation for P(t) is then extended to include time-limited search and field of regard (FOR) search, where it is assumed the target has an equal probability of being anywhere in the FOR. Equations are derived for the mean time to find a target for two cases: (1) an arbitrary number of observers using a single sensor search a single FOV or FOR for a single target; (2) two observers using two sensors search independently for a single target. The condition that P∞ and τ be independent of time is relaxed and this leads to the time dependent search parameter (TDSP) search model. The TDSP search model is used to calculate P(t) in: (1) search from a moving vehicle, (2) FOR search where the condition that the target has an equal probability of being anywhere in the FOR is relaxed, and (3) in multitarget search. © 2013 Society of Photo-Optical Instrumentation Engineers (SPIE).

PubMed | Wilmer Eye Institute, Madigan Army Medical Center, U.S. National Institutes of Health, Fort Belvoir Community Hospital and Night Vision and Electronic Sensors Directorate
Type: Journal Article | Journal: Military medicine | Year: 2017

To compare visual performance, marksmanship performance, and threshold target identification following wavefront-guided (WFG) versus wavefront-optimized (WFO) photorefractive keratectomy (PRK).In this prospective, randomized clinical trial, active duty U.S. military Soldiers, age 21 or over, electing to undergo PRK were randomized to undergo WFG (n = 27) or WFO (n = 27) PRK for myopia or myopic astigmatism. Binocular visual performance was assessed preoperatively and 1, 3, and 6 months postoperatively: Super Vision Test high contrast, Super Vision Test contrast sensitivity (CS), and 25% contrast acuity with night vision goggle filter. CS function was generated testing at five spatial frequencies. Marksmanship performance in low light conditions was evaluated in a firing tunnel. Target detection and identification performance was tested for probability of identification of varying target sets and probability of detection of humans in cluttered environments.Visual performance, CS function, marksmanship, and threshold target identification demonstrated no statistically significant differences over time between the two treatments. Exploratory regression analysis of firing range tasks at 6 months showed no significant differences or correlations between procedures. Regression analysis of vehicle and handheld probability of identification showed a significant association with pretreatment performance.Both WFG and WFO PRK results translate to excellent and comparable visual and military performance.

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