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This study reports the development and characterization of an efficient portable X-ray imaging device built from Raspberry Pi components, including a high-quality 12.3-megapixel camera configured for indirect detection with a Gd2O2S:Tb…

A system using a personal computer, speaker, and a microphone is used to detect objects, and make crude measurements using a carrier modulated by a pseudorandom noise (PN) code. This system can be constructed using a personal computer and…

物理教育 · 物理学 2012-01-09 Joel F. Campbell , Michael A. Flood , Narasimha S. Prasad , Wade D. Hodson

This article describes the design of a flexible and low-cost platform for monitoring environmental variables applied to agriculture. For the construction of this platform, technologies based on the communication protocol, Wi-Fi, Bluetooth,…

网络与互联网体系结构 · 计算机科学 2021-01-15 Harold Pinilla , Jose Macias , Emmanuel Lescano , Jose David Alvarado , Wilder Castellanos

Space observatories for gravitational radiation such as LISA are equipped with dedicated on-board instrumentation capable of measuring magnetic fields with low-noise conditions at millihertz frequencies. The reason is that the core…

天体物理仪器与方法 · 物理学 2018-06-18 Ignacio Mateos , Rubén Sánchez-Mínguez , Juan Ramos-Castro

This article describes the design, assembly and characterization of a portable cosmic ray detector, developed by the INSULAB group and suitable for teaching activities aimed at high school students. It consists of a compact aluminum…

Satellite Laser Ranging (SLR) is an established technique providing very accurate position measurements of satellites in Earth orbit. However, despite decades of development, it remains a complex and expensive technology, which impedes its…

仪器与探测器 · 物理学 2024-01-31 Daniel Hampf , Felicitas Niebler , Tristan Meyer , Wolfgang Riede

Due to the advancement of nano-satellite technology, CubeSats and fleets of CubeSats can form an alternative to high-cost large-size satellite missions with the advantage of extended spatial coverage. One of these initiatives is the…

天体物理仪器与方法 · 物理学 2021-05-05 Kornél Kapás , Tamás Bozóki , Gergely Dálya , János Takátsy , László Mészáros , András Pál

Monitoring behaviour in smart homes using sensors can offer insights into changes in the independent ability and long-term health of residents. Passive Infrared motion sensors (PIRs) are standard, however may not accurately track the full…

计算机视觉与模式识别 · 计算机科学 2021-11-18 Glenn Forbes , Stewart Massie , Susan Craw , Christopher Clare

The detection of small exoplanets with the radial velocity (RV) technique is limited by various poorly known noise sources of instrumental and stellar origin. As a consequence, current detection techniques often fail to provide reliable…

地球与行星天体物理 · 物理学 2022-11-16 S. Sulis , D. Mary , L. Bigot , M. Deleuil

Much of biology (and, indeed, all of science) is becoming increasingly computational. We tend to think of this in regards to algorithmic approaches and software tools, as well as increased computing power. There has also been a shift…

计算机与社会 · 计算机科学 2019-06-19 Anthony C Fletcher , Cameron Mura

The observation of the low-energy $\gamma$-ray (0.1-30 MeV) sky has been significantly limited since the COMPTEL instrument was decommissioned aboard the Compton Gamma-ray Observer (CGRO) satellite in 2000. The exploration of $\gamma$-ray…

天体物理仪器与方法 · 物理学 2024-12-25 Rishank Diwan , Kees de Kuijper , Partha Sarathi Pal , Andreas Ritter , Pablo Saz Parkinson , Andy C. T. Kong , Quentin Parker

CubeSats and small satellites are emerging as low-cost tools for performing science and exploration in deep space. These new classes of satellite exploit the latest advancement in miniaturization of electronics, power systems, and…

天体物理仪器与方法 · 物理学 2017-01-31 Stephen R. Schwartz , Shota Ichikawa , Pranay Gankidi , Nalik Kenia , Graham Dektorand Jekan Thangavelautham

Pose estimation of an uncooperative space resident object is a key asset towards autonomy in close proximity operations. In this context monocular cameras are a valuable solution because of their low system requirements. However, the…

计算机视觉与模式识别 · 计算机科学 2022-06-24 Alessandro Lotti , Dario Modenini , Paolo Tortora , Massimiliano Saponara , Maria A. Perino

A NASA sounding rocket for high contrast imaging with a visible nulling coronagraph, the Planet Imaging Coronagraphic Technology Using a Reconfigurable Experimental Base (PICTURE-B) payload has made two suborbital attempts to observe the…

天体物理仪器与方法 · 物理学 2017-07-04 Ewan S. Douglas , Christopher B. Mendillo , Timothy A. Cook , Kerri L. Cahoy , Supriya Chakrabarti

Using the high-resolution OLED screen of a smartphone to project arbitrary scenes and patterns can open a complete new dimension for testing sensors in the visible. Based on an original concept from JPL (Jet Propulsion Laboratory), this…

Large networks of Low Earth Orbit (LEO) satellites are being built using inter-satellite lasers. These networks promise to offer low-latency wide-area connectivity, but reliably routing such traffic is difficult, as satellites are very…

网络与互联网体系结构 · 计算机科学 2024-01-23 Stefano Vissicchio , Mark Handley

Of late, Software Defined Radio (SDR) approach has become an effective means to design high data rate wireless systems for a range of applications. There are methods with which low cost SDR based 4th generation (4G) or long term evolution…

网络与互联网体系结构 · 计算机科学 2021-11-24 Nupur Choudhury , Chinmoy Kalita , Kandarpa Kumar Sarma

Jitter degrades a spacecraft's fine-pointing ability required for optical communication, earth observation, and space domain awareness. Development of jitter estimation and compensation algorithms requires high-fidelity sensor observations…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Samya Bagchi , Peter Anastasiou , Matthew Tetlow , Tat-Jun Chin , Yasir Latif

The paper proposes a low-cost system to capture spatial vehicle headway data and process the raw data by filtering outliers using a novel filtering process. Multiple sensors and modules are integrated to form the system. The sensors used…

信号处理 · 电气工程与系统科学 2019-08-14 Azhagan Avr , Shams Tanvir , Nagui M. Rouphail , Rachana Gupta

We present our ongoing work building a Raspberry Pi cluster consisting of 300 nodes. The unique characteristics of this single board computer pose several challenges, but also offer a number of interesting opportunities. On the one hand, a…