Defense + Commercial Sensing最新文献_第9页

Label-free surface-enhanced Raman scattering (SERS) and machine learning for biological analysis 用于生物分析的无标签表面增强拉曼散射（SERS）和机器学习

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013981

Der Vang, Jonathan Pahren, Tom Cambron, Pietro Strobbia

引用次数: 0

Countering environmental effects in optical systems using Kapton tape 使用 Kapton 胶带消除光学系统中的环境影响

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013786

Joshua B. Bettinger, Steven Vogel, Andrew Dugrenier

引用次数: 0

Risk considerations for the department of defense's fielding of large language models 国防部部署大型语言模型的风险考虑因素

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3014424

Misty K. Blowers, Santos S. Salinas, Seth A. Bailey

引用次数: 0

Inconsistency-based active learning with adaptive pseudo-labeling for fish species identification 基于不一致性的主动学习与自适应伪标记用于鱼类物种识别

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013336

M. M. Nabi, Chiranjibi Shah, S. Y. Alaba, Ryan Caillouet, Jack H. Prior, Matthew Campbell, Farron Wallace, John E. Ball, Robert J. Moorhead

{"title":"Inconsistency-based active learning with adaptive pseudo-labeling for fish species identification","authors":"M. M. Nabi, Chiranjibi Shah, S. Y. Alaba, Ryan Caillouet, Jack H. Prior, Matthew Campbell, Farron Wallace, John E. Ball, Robert J. Moorhead","doi":"10.1117/12.3013336","DOIUrl":"https://doi.org/10.1117/12.3013336","url":null,"abstract":"The deep neural network has found widespread application in object detection due to its high accuracy. However, its performance typically depends on the availability of a substantial volume of accurately labeled data. Several active learning approaches have been proposed to reduce the labeling dependency based on the confidence of the detector. Nevertheless, these approaches tend to exhibit biases toward high-performing classes, resulting in datasets that do not adequately represent the testing data. In this study, we introduce a comprehensive framework for active learning that considers both the uncertainty and the robustness of the detector, ensuring superior performance across all classes. The robustness-based score for active learning is calculated using the consistency between an image and its augmented version. Additionally, we leverage pseudo-labeling to mitigate potential distribution drift and enhance model performance. To address the challenge of setting the pseudo-labeling threshold, we introduce an adaptive threshold mechanism. This adaptability is crucial, as a fixed threshold can negatively impact performance, particularly for low-performing classes or during the initial stages of training. For our experiment, we employ the Southeast Area Monitoring and Assessment Program Dataset 2021 (SEAMAPD21), comprising 130 fish species classes with 28,328 image samples. The results show that our model outperforms the state-of-the-art method and significantly reduces the annotation cost. Furthermore, we benchmark our model’s performance against a public dataset (PASCAL VOC07), showcasing its effectiveness in comparison to existing methods.","PeriodicalId":178341,"journal":{"name":"Defense + Commercial Sensing","volume":"33 S122","pages":"130610C - 130610C-12"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Terahertz sensing through the lens of the Kalman filter: a bibliometric exploration 卡尔曼滤波器透视下的太赫兹传感：文献计量学探索

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013848

Khaled Obaideen, Mohammad A. AlShabi, Talal Bonny

{"title":"Terahertz sensing through the lens of the Kalman filter: a bibliometric exploration","authors":"Khaled Obaideen, Mohammad A. AlShabi, Talal Bonny","doi":"10.1117/12.3013848","DOIUrl":"https://doi.org/10.1117/12.3013848","url":null,"abstract":"The Terahertz (THz) spectrum, situated between microwave and infrared frequencies, is utilized for applications such as imaging and chemical analysis. This project aims to combine THz sensing with the Kalman Filter estimator, a recursive algorithm typically utilized for estimating data with high levels of noise. Upon a thorough effort, we investigate the prospects and challenges in THz sensing using the Kalman filter for assistance. Upon examining this area, we found an increasing pattern in combining THz wavelength technologies that boosts the precision and effectiveness of Kalman Filter applications in THz sensing. The topic being talked about is the significance of this technology in improving the dependability of detecting and measuring data in difficult conditions. Moreover, this document outlines essential advancements and trends in the field of THz sensing, as well as the progress in various disciplines that contribute to the development of THz sensing. This paper presents details about the current planning and disadvantages of utilizing Kalman Filters in THz sensing. It has served as a broad guide for both scientists and professionals, laying the groundwork for future advancements in this field. Incorporating these directivity methods not only enhances detection capabilities but also produces novel contributions to the field of THz sensing that also facilitate knowledge sharing.","PeriodicalId":178341,"journal":{"name":"Defense + Commercial Sensing","volume":"159 2","pages":"130600I - 130600I-9"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141376228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enabling space-qualified opto-electronic systems through photonic wirebonding 通过光子线键合实现空间合格光电系统

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013559

J. Sherman, Victoria Rosborough, Ruby Gans, Juan Ramirez, D. Kebort, Geoffrey Sitwell, Juergen Musolf, Henry Garrett, Tom Liu, Caleb McEwen, Trevor Cooper, Amin Nehrir, Gordon Morrison, Leif Johansson, M. Mashanovitch

{"title":"Enabling space-qualified opto-electronic systems through photonic wirebonding","authors":"J. Sherman, Victoria Rosborough, Ruby Gans, Juan Ramirez, D. Kebort, Geoffrey Sitwell, Juergen Musolf, Henry Garrett, Tom Liu, Caleb McEwen, Trevor Cooper, Amin Nehrir, Gordon Morrison, Leif Johansson, M. Mashanovitch","doi":"10.1117/12.3013559","DOIUrl":"https://doi.org/10.1117/12.3013559","url":null,"abstract":"Applications such as LIDAR, ranging/ sensing, and optical communications all require photonic components, such as sources, detectors, and modulators, to be integrated into a single system. For spaceborne applications, SWaP (size, weight and power) is a key consideration: a monolithic indium phosphide (InP) Photonic Integrated Circuit (PIC) can integrate many components onto a chip with a footprint of a few square mm. Photonic Wirebonding (PWB) enables seamless integration of best-in-class optical devices from disparate materials. Connecting and mode-matching different photonic components enables versatility and functionality unachievable by other methods, facilitating co-packaging. PICs and PWBs do not yet have spaceflight heritage: demonstrating increased Technology Readiness Level (TRL) is a key step toward use in orbital and spaceborne missions. Freedom Photonics presents our first hermetic photonic wirebonded PIC package, alongside recent environmental testing results demonstrating that our PIC and PWB technologies are suitable for the harsh conditions of launch and spaceflight: shock, vibration, radiation, and temperature cycling.","PeriodicalId":178341,"journal":{"name":"Defense + Commercial Sensing","volume":"3 6","pages":"1306206 - 1306206-8"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141379504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral characteristics of generation after next satellite navigational sensors 新一代卫星导航传感器的光谱特性

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3012179

Jeremy Murray-Krezan, M. Bolden, Erin Griggs

{"title":"Spectral characteristics of generation after next satellite navigational sensors","authors":"Jeremy Murray-Krezan, M. Bolden, Erin Griggs","doi":"10.1117/12.3012179","DOIUrl":"https://doi.org/10.1117/12.3012179","url":null,"abstract":"Upcoming space missions are expected to go farther from Earth and be more autonomous and self-sufficient. Most man-made satellites are controlled from Earth-based ground stations that also perform guidance and navigation functions. Onboard star trackers and GPS units are commonplace on satellites and part of the guidance, navigation and control systems, permitting in situ measurement and update to the guidance solution. However, without an extension of the network, GPS units are not expected to operate in deep space, making them suitable for spaceflight in the near-Earth orbits only. Star trackers, which use an optical payload, permit accurate pointing of the satellite via the methods of astrometry, but do not provide a full guidance and navigation solution. In this paper we explore characteristics of a generation-after-next satellite navigational sensor concept where, using optical or infrared spectral measurements in addition to the typical techniques of astrometry for locating stars, onboard autonomous computation of a navigational solution is possible. Spectral measurements allow estimation of stellar velocities, in addition to relative locations. We hypothesize that recent space missions have generated the star catalogs, with both position and velocity measurements, necessary to anchor measurements of the new conceptual sensor.","PeriodicalId":178341,"journal":{"name":"Defense + Commercial Sensing","volume":"6 6","pages":"1306202 - 1306202-10"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uncovering deep-rooted cultural differences (UNCOVER) 发现根深蒂固的文化差异（UNCOVER）

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3012714

Aleksey Panasyuk, Bryan Li, Christopher Callison-Burch

引用次数: 0

CubeSat reaction wheel attitude control platform 立方体卫星反力轮姿态控制平台

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3014002

Justin Hartland, Dylan Ballback, Isaac Stitt, Ryan Taylor, Jacob Salazar, Ella Cheatham, Anuhya Suhas, Vishwam Rathod

{"title":"CubeSat reaction wheel attitude control platform","authors":"Justin Hartland, Dylan Ballback, Isaac Stitt, Ryan Taylor, Jacob Salazar, Ella Cheatham, Anuhya Suhas, Vishwam Rathod","doi":"10.1117/12.3014002","DOIUrl":"https://doi.org/10.1117/12.3014002","url":null,"abstract":"In traditional classroom settings, spacecraft attitude dynamics and controls are typically presented through 2-D illustrations of complex 3-D dynamics. This often results in students finding it challenging to bridge the gap between theoretical physics and its practical, real-world applications. To address this challenge, our project aims to design, develop, and manufacture CubeSat controls testbeds. These testbeds are equipped with reaction wheels to enable autonomous attitude control system applications. Notably, each testbed will incorporate three distinct reaction wheels, each mounted orthogonally. This arrangement ensures precise attitude control in all three degrees of freedom. The versatility of these CubeSat testbeds allows users to explore and implement a broad range of control systems. These can range from classical PID controllers, state-space control methods, adaptive controllers, sliding mode control, to more advanced techniques like model predictive control, and robust control methods. The platform can serve both as an educational tool for students and a research apparatus for professionals. The ultimate vision for the CubeSat Reaction Wheel Attitude Control Platform is its seamless integration into a dedicated website called Easy Controls. Here, users worldwide can upload their control algorithms. They can then view a live stream of their algorithm being tested and operationalized in real-time on the physical hardware. This platform not only demystifies spacecraft control dynamics for learners but also fosters a global community of innovators collaborating and refining their control algorithms.","PeriodicalId":178341,"journal":{"name":"Defense + Commercial Sensing","volume":"135 1‐2","pages":"130580X - 130580X-6"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141381383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Zero trust decision analysis for next generation networks 下一代网络的零信任决策分析

Defense + Commercial Sensing Pub Date : 2024-06-06 DOI: 10.1117/12.3013993

Joseph B. Kroculick

引用次数: 0