Dissertations / Theses: 'Night vision goggle'

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Beilstein, Del L. "Visual simulation of night vision goggles in a chromakeyed, augmented, virtual environment." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FBeilstein.pdf.

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Thesis (M.S. in Modeling, Virtual Environments, and Simulation)--Naval Postgraduate School, June 2003.
Thesis advisor(s): Rudolph P. Darken, Joseph A. Sullivan. Includes bibliographical references (p. 77). Also available online.

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Abel, Derek H. "An image quality analysis of ANVIS-6 night vision goggles." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-11102009-020251/.

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Bryant, Bobby PROTOTYPES NIGHT VISION COMPUTER AIDED INSTRUCTION GOGGLES RISK TRAINING INTERACTIONS THREE DIMENSIONAL INSTRUCTIONS GRAPHICS OPERATION COMPUTERS PILOTS THESES. "A computer-based multimedia prototype for night vision goggles /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA286208.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, September 1994.
Thesis advisor(s): Kishore Sengupta, Alice Crawford. "September 1994." Bibliography: p. 35. Also available online.

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Bryant, Bobby. "A computer-based multimedia prototype for night vision goggles." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/30923.

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Naval aviators who employ night vision goggles (NVG) face additional risks during nighttime operations. In an effort to reduce these risks, increased training with NVGs is suggested. Our goal was to design a computer-based, interactive multimedia system that would assist in the training of pilots who use NVGs. This thesis details the methods and techniques used in the development of the NVG multimedia prototype. It describes which hardware components and software applications were utilized as well as how the prototype was developed. Several facets of multimedia technology (sound, animation, video and three dimensional graphics) have been incorporated into the interactive prototype. For a more robust successive prototype, recommendations are submitted for future enhancements that include alternative methodologies as well as expanded interactions. Multimedia, Computer aided instruction, Night vision goggles.

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Armentrout, Jeffrey J. "An investigation of stereopsis with AN/AVS-6 night vision goggles at varying levels of illuminance and contrast." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-12162009-020156/.

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Epperson, Sean T. "Animation within a multimedia training system for night vision goggles." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA294095.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, March 1995.
"March 1995." Thesis advisor(s): Kishore Sengupta, Alice Crawford. Bibliography: p. 43-45. Also available online.

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Pierce, Eric Christopher. "Effects of target size, luminance contrast, and illumination on visual target detection and recognition with AN/AVS-6 goggles." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-12042009-020346/.

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Meza, Francisco Q. "Developing multimedia instructional systems : an example application for training in night vision goggles /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA294521.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, March 1995.
"March 1995." Thesis advisor(s): Kishore Sengupta, Alice Crawford. Bibliography: p. 47-48. Also available online.

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Power, Erik D. "A Nonlinear Finite Element Model of the Human Eye to Investigate Ocular Injuries From Night Vision Goggles." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/31927.

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Airbags have been saving lives in automobile crashes for many years and are now being used in helicopters. The purpose of this study was to investigate the potential for ocular injuries to helicopter pilots wearing night vision goggles when the airbag is deployed. A nonlinear finite element model of the human eye was constructed. Ocular structures never before included in finite element models of the eye, such as the fatty tissue, extraocular muscles, and bony orbit were included in this model. In addition, this model includes material properties up to rupture making the eye suitable for large deformation applications. The model was imported into Madymo and used to determine the worst-case position of a helicopter pilot wearing night vision goggles. This was evaluated as the greatest Von Mises stress in the eye when the airbag is deployed. The worst-case position was achieved by minimizing the distance between the eyes and goggles, having the occupant look directly into the airbag, and making initial contact with the airbag halfway through its full deployment. By removing the extraocular muscles, the stress sustained by the eye decreased. Simulations with both the goggles remaining fastened and breaking away from the aviator helmet were performed. Finally, placing a protective lens in front of the eyes was found to reduce the stress to the eye but increase the force experienced by the surrounding orbital bones. The finite element model of the eye proved effective at evaluating the experimental boundary conditions, and could be used in the future to evaluate impact loading on eyes that have been surgically corrected and to model the geometry of the orbital bones.
Master of Science

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Sapparth, David James. "Refining Topographic Line Maps for Use with Ground Based Night Vision Systems." Queensland University of Technology, 2002. http://eprints.qut.edu.au/15877/.

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This study aims to refine the current cartographic standards and specifications used by the Australian Defence Force to produce the 1:50 000 scale Topographic Line Map (TLM) so that TLMs can be read with both normal chromatic vision and with achromatic NVG vision. The proliferation and integration of Night Vision Goggles (NVG) into the Australian Army has increased the operating capacity of forces at night. The Australian Army has incorporated NVG into standard operating procedures and training to the effect that Australian military personnel do not operate, at night, without NVG. The increased use of NVG in the Australian Army has required existing systems to be modified or redesigned to be effective within the limitations of NVG. The inability to read TLMs effectively with NVG is an identified problem within the Australian Army. This research has investigated the problems associated with using NVG and the information, which cannot be read on TLMs with NVG. This information was compared to a survey of features on a TLM that are critical for successful military operations. The combined information determined which features on a TLM were to be refined to enable effective reading with NVG. The scope of this research limited refinements to current or previous cartographic standards and specifications used by the Australian Army to produce TLMs. Refinements were limited to symbology, size, and colour and three critical information features of contours, watercourses and vegetation. The problems of cartographic design for a dual vision system (chromatic/achromatic) were investigated and it was determined that the common factor of value contrast exhibits the greatest effect on the refinement process. Prototype TLMs were produced and tested with normal and NVG vision to determine the best cartographic portrayal of the critical information features, without compromising the Figure/ground relationship, balance and cognitive meanings of the TLM. A final product was produced from the prototype experiment results providing a TLM for use with both normal and NVG vision. The refined TLM has changed contours from brown to black without changes to symbology or size and watercourses from 0.1mm width to 0.2mm width without changing colour or symbology. Vegetation was retained at the current standard and specification.

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Mugnai, Gabriele. "Night Vision Imaging System (NVIS) certification requirements analysis of an Airbus Helicopters H135." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9801/.

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The safe operation of nighttime flight missions would be enhanced using Night Vision Imaging Systems (NVIS) equipment. This has been clear to the military since 1970s and to the civil helicopters since 1990s. In these last months, even Italian Emergency Medical Service (EMS) operators require Night Vision Goggles (NVG) devices that therefore amplify the ambient light. In order to fly with this technology, helicopters have to be NVIS-approved. The author have supported a company, to quantify the potentiality of undertaking the certification activity, through a feasibility study. Even before, NVG description and working principles have been done, then specifications analysis about the processes to make a helicopter NVIS-approved has been addressed. The noteworthy difference between military specifications and the civilian ones highlights non-irrevelant lacks in the latter. The activity of NVIS certification could be a good investment because the following targets have been achieved: Reductions of the certification cost, of the operating time and of the number of non-compliance.

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Aurand, Alexander M. "Dynamic Moments on the Cervical Spine Imposed by Head-Mounted Equipment." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1430747355.

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Tai, Hung-Sheng, and 戴宏聲. "Usability Analysis of Night Vision Goggle and its Load on Neck and Shoulders Complex." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/19336133235001706883.

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博士
國立臺灣科技大學
管理研究所
99
The present study examines the usability and workload on neck-shoulder complex with three stages. The first stage is questionnaire survey to investigate the usability of the old model night vision goggles (NVG). The 51.9% of the 452 valid questionnaires suggested improving the comfort. The convenience survey result showed that 37.3% of users recommended improving and simplifying the mounting procedures. The design issue was significant in the second stage. It is recommended that new design NVG with simple configuration, easy to operate, decrease 3 steps on the mounting procedures, weight dispersion around the head, to improve the comfort and convenience. Twenty-nine male infantry soldiers participated in the final stage divided into two parts. The first part is to evaluate the usability with the subjective rating on the convenience, comfort, and stability using old and new model NVGs. The results showed that the mounting time of the new model was 40.8 ± 18 sec that was faster than that of the old model (105.7 ± 44 sec) by 64.9 sec. The second part is to simulate ground operation with standing, sitting, and prone postures to obtain the neck-shoulder workload by Electromyography (EMG) to identify the interaction effects of “model” and “posture”. EMG activities of the neck muscles are over 20 % MVC regardless the posture. Our results showed that a heavier workload was experienced while engaged in a prone posture (43.3 % MVC) than that of sitting or standing. The mean head backward angle in the prone posture was 10°, which was different for head forward angle in standing (30°) and sitting (40°) and could explain a particularly heavy workload in the prone position. The results also showed that the “posture” was the major determinant of neck muscles on EMG tracings. A heavy workload is experienced in neck muscles while wearing NVG in the prone position. These findings suggest that we should provide a rifle fitted with the NVG or hand-held model to decrease head-neck workload. We suggest that further reductions of NVG weight and relocation of the center of gravity of the NVGs to the center mass of the head could further reduce stress on the head-neck complex. Further research will still need to redesign NVG and examine the long-term effects for wearing NVG.

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Nakaza, Edward Takeshi Safety Science Faculty of Science UNSW. "Assessment of injury risks associated with wearing the enhanced combat helmet and night vision goggle - driver: frontal vehicle collision study." 2007. http://handle.unsw.edu.au/1959.4/40484.

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The requirement to operate vehicles in low light and/or night environments whilst wearing night vision goggle (NVG) systems has become increasingly common during military operations. There is very limited research investigating injury risks associated with these systems during ground vehicle collisions. This study examined the injury risks associated with wearing the Australian Defence Force - Enhanced Combat Helmet (ECH) and NVG system, in frontal vehicle collisions. This project consisted of two components: (1) crash tests using a sled and (2) numerical simulations of impacts. Four dynamic sled tests were conducted using a 50th percentile, male, Hybrid III dummy positioned on a rigid seat. Frontal impact tests were performed at a 40 km/h change in velocity (*v) and 20 g deceleration. The test configurations were as follows: (a) Base; (no helmet or additional equipment); (b) ECH; and, (c) ECH and NVG. Condition (c) was carried out twice, to determine repeatability. The sled test protocols were reconstructed precisely with the numerical simulation package MADYMO and the simulations were shown to correlate well with the experimental results. Using this validated model, four parametric studies were undertaken to assess the influence of counterweights, seat cushion, seatbelt pre-tensioner, and the vehicle's *v and acceleration on injury risks. The study found that neck loads were within acceptable limits, with the exception of the neck extension moment, which was exceeded for all NVG conditions. Based on the parametric studies, no major improvements were observed in the neck extension moments with the use of counterweights or a seat cushion. In contrast the use of a seatbelt pre-tensioner was observed to decrease greatly this neck injury risk in certain scenarios. The study also identified that a *v of 15 km/h and peak acceleration of up to 14 g were required to keep the neck extension moment below the prescribed injury criteria. However, the high neck extension moment values may have been partially attributable to the stiff Hybrid III neck. This study identified a possible injury mechanism for soldiers using the ECH and NVG system during specific impact scenarios. The method applied in this project was designed to be repeatable.

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Feng, Lu Chi, and 呂奇峰. "Preliminary exploration of night flight safety for ship-based helicopter based on night vision goggles flight." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/60492876652279975374.

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碩士
開南大學
觀光運輸學院碩士在職專班
102
This study takes the senior aviation pilots with current R.O.C.N service helicopter squadron on board battleship flying experience and both cockpit and cabin crew experts as our research audience. To study the hiding risk factors behind while conducting helicopter night flight with night vision goggles and to construct evaluation methods of its “Operation Risk Management” (ORM), this study aims to understand the source values of the risk factors and its importance under the night vision goggles flight environments. Based on the oral comprehensive evaluation factor method,the results find the priorties on risk factor of each sequence as following: “Human Factor Framework” (Flight Qualification And Grading); “Mechanic Factor Framework” (Machine Condition); “Environment Factor Framework” (Operation Platform); “Mission Factor Framework” (Mission Task); and “Management And Leadership Factor Framework” (Crew Resource Management). This study not only provides valuable suggestions to related forces and units, but also gives the directions to plan the future helicopter extended operation plan or to have a new helicopter construction plan. Most of all, it should take the overall flight safety concern as the priority starting point and take the advanced night vision auxiliary equipments and facilities as the military purchase list in the future. In recent years navy had two flight crash cases probably due to in night maritime envirunment the .No doubt platform-landing and takeing off an effectiveness of flght safety educhtion training is still one of the most important elements in aviation safety. Once the flight accideats occurs, it may make irreparable severe consequence；thus to have a batter safety in night flight, it is a important subject to study every related error in night vision goggles flight environments.

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LUO, GUANG-HUA, and 羅光驊. "Imaging Yield Rate Analysis of Night-Vision Goggles Based on RGB Colors Separation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/42yu8r.

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碩士
國立金門大學
理工學院工程科技碩士在職專班資訊系統組
104
It's very important for a soldier to fight in battlefield at night. The only thing that we can rely on is the “night vision sight”. If the night vision sight image quality is bad, it might make us to hurt our teammate from enemy, what even worse is that it might to result in the failure of the war. So the quality of the night vision sight is a very important thing for every single soldier. The research is use 12 night vision sight, using a situations of simple plane figures and non-target to taken the blank green photo, the data produced is the histogram separation to resulting by RGB, and to analyzed the night vision sight after quality classification. The results of the test is there can be shown five best and complicated graphics by using binary and it’s recognition is the highest. In addition, the image of combined with night vision sight to shoot without a target, the data from the RGB color separation, after comparison of the artificial to identify the state of night vision sight, the data is match of the former color separation. The result of the test is that the image R and B get lower when the goggles are blank and without target. The G get higher the quality get better. The range of the R and B are wide but less concentrated and if the G get higher, the quality is worse than the previous two but still can do the job. Images R, G, B values are all low, image presented is the worst, it’s unable to perform combat missions at night and all kinds of night duty. Therefore the basis of the image intensifier can be told by suing the distribution of the RGB.

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Su, Yan-Hong, and 蘇彥宏. "Effects of Wearing Night Vision Goggles on Visual Abilities and Loads of Neck-shoulders Areas." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/33625941177447672955.

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碩士
聖約翰科技大學
工業工程與管理系碩士班
99
Use of night vision devices enabled military personnel to continue operations at night and in poor visibility conditions. The devices became indispensable for various civil and military operations at night. However, wearing night vision goggles will result in reduced visual field, but also cause shoulder and neck fatigue. In first stage of present study, questionnaire survey was conducted for status of night vision goggles, operation, and the body parts which may be uncomfortable, and to be improved the site. Results of analysis showed that eyes, nose and forehead were uncomfortable, and night vision equipment may still need improvement. In second stage, present study recruited 29 participants and then measured basic visual abilities involve visual field, depth perception, and VDT visual acuity. Results indicated the visual abilities decreased while wearing night vision goggles. In addition, pairs of Ag/AgCl surface electrodes separated by 20 mm were placed on the right upper neck and rapezius muscles. Three trials (standing, running with 2 mph and with 4 mph) were conducted. The order of each trial was randomly assigned to each subject to minimize sequencing effects. These were significant increase in EMG activities while wearing night vision goggles in running state. Thus, operators should take off the night vision goggles to reduce the workload of neck and shoulders areas when fast walking or running.

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Dissertations / Theses on the topic 'Night vision goggle'

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