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Space Surveillance with High-Frequency Radar [PDF]

open access: yesSensors
High-Frequency (HF) radar is well suited to the surveillance of low-earth-orbit space. For large targets, a small deployable HF radar is able to match the detection performance of much larger space surveillance radar systems operating at higher ...
Brendan Hennessy   +8 more
doaj   +7 more sources

Establishing the Capabilities of the Murchison Widefield Array as a Passive Radar for the Surveillance of Space

open access: yesRemote Sensing, 2022
This paper describes the use of the Murchison Widefield Array, a low-frequency radio telescope at a radio-quiet Western Australian site, as a radar receiver forming part of a continent-spanning multistatic radar network for the surveillance of space ...
Brendan Hennessy   +7 more
doaj   +3 more sources

Are schools panoptic? [PDF]

open access: yes, 2010
Schools are often understood by social researchers as panoptic spaces, where power is exercised through constant surveillance and monitoring. In this paper, I use Foucault’s notorious account of the Panopticon as a point of departure for a detailed ...
Gallagher, M.
core   +8 more sources

Design of Space Target Surveillance Constellation Based on Simulation Comparison Method

open access: yesSensors
Aiming at the requirement of space situational awareness on the full-domain and all-time coverage capability of low Earth orbit space targets and focusing on the design of a space-based space target awareness system, a space target awareness ...
Qinying Hu, Desheng Liu, Ziwei Dong
doaj   +3 more sources

Effect of Observation Geometry on Short-Arc Angles-Only Initial Orbit Determination

open access: yesApplied Sciences, 2022
Space-based optical sensors are attracting increasing research attention as they can measure the angle of space targets over large areas, facilitating low-cost, wide-area space target surveillance. Studying the effect of observation geometry on short-arc
Zhao Feng   +4 more
doaj   +1 more source

Social Media, Peer Surveillance, Spiritual Formation, and Mission: Practising Christian Faith in a Surveilled Public Space [PDF]

open access: yes, 2018
Social media has become a part of everyday life, including the faith lives of many. It is a space that assumes an observing gaze. Engaging with Foucauldian notions of surveillance, self-regulation, and normalisation, this paper considers what it is about
Lewis, RM
core   +3 more sources

Nonuniform Background Correction for Wide-Field Surveillance Camera

open access: yesApplied Sciences, 2023
Space environment surveillance is very important for space security, which is easy to be disturbed by stray light and hot pixels, and the image background presents a certain degree of nonuniformity.
Dali Zhou, Xiaodong Wang
doaj   +1 more source

Conceptual Design of the NISS onboard NEXTSat-1 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2014
The NISS onboard NEXTSat-1 is being developed by Korea astronomy and space science institute (KASI). For the study of the cosmic star formation history, the NISS performs the imaging spectroscopic observation in the near-infrared range for nearby ...
Woong-Seob Jeong   +17 more
doaj   +1 more source

Capability of a Ground-Based Passive Surveillance System to Detect and Track Spaceborne SAR in LEO Orbits

open access: yesRemote Sensing, 2022
Monitoring the Earth’s surface from the low Earth orbit (LEO) by synthetic aperture radar (SAR) provides meaningful information about a number of human activities such as the ecosystem, agriculture, and of course security matters. During its operation in
David Novák   +2 more
doaj   +1 more source

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