Results 41 to 50 of about 279 (122)

Wideband DVB-S/DVB-S2 Passive Bistatic Radar for Resident Space Object detection

, 2022
This paper deals with the design of a DVB-S/DVB-S2 passive bistatic radar for the detection of Resident Space Objects (RSOs) in the Low Earth Orbit (LEO) focussing on the advantages of broadband operation.
Capria, Amerigo, Saverino, Anna Lisa, Martorella, Marco; id_orcid   +2 more
core   +1 more source

COSST: A tool to facilitate seed provenancing for climate‐smart ecosystem restoration

Journal of Applied Ecology, Volume 62, Issue 3, Page 677-688, March 2025.
Our tool can guide where to source seeds for species lacking range‐wide information on genetic structure, which is the case for a substantial proportion of the tropical flora, where ecosystem restoration is of paramount importance. Abstract Selecting the best seed sources is a key step in ecological restoration planning especially under climate change.
Mateus C. Silva, Peter Moonlight, Rafael S. Oliveira, Lucy Rowland, R. Toby Pennington   +4 more
wiley   +1 more source

YOLO v4 Based Algorithm for Resident Space Object Detection and Tracking

, 2023
Resident Space Objects (RSOs) detection and tracking are relevant challenges in the framework of Space Situational Awareness (SSA). The growing number of active and inactive platforms and the incoming era of mega constellations is increasing the traffic ...
Curti F., Goracci G., Agostinelli I., Mastrofini M.   +3 more
core   +1 more source

Light-Curve Classification of Resident Space Objects for Space Situational Awareness: A Scoping Review

Aerospace
The proliferation of Resident Space Objects (RSOs), including satellites, rocket bodies, and debris, poses escalating challenges for Space Situational Awareness (SSA). Optical light curves capture temporal brightness variations influenced by factors such
Minyoung Hwang, Vithurshan Suthakar, Randa Qashoa, Regina S. K. Lee, Gunho Sohn   +4 more
doaj   +1 more source

Characterisation of Resident Space Objects and Synchronisation Error Compensation in Multistatic Interferometric Inverse Synthetic Aperture Radar Imaging

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
This article presents a study on interferometric inverse synthetic aperture radar (ISAR) for three‐dimensional imaging and rotational velocity estimation. The study focuses on synchronisation error compensation in a multistatic setup with three ground‐based radars and non‐orthogonal baselines.
Manjunath Thindlu Rudrappa, Martin Käske, Marcus Albrecht, Peter Knott   +3 more
wiley   +1 more source

A Petri net model for Time‐Delay Attack detection in Precision Time Protocol‐based networks

IET Cyber-Physical Systems: Theory &Applications, Volume 9, Issue 4, Page 407-423, December 2024.
The authors propose a Petri net model as a formal validation tool to evaluate the robustness of the Precision Time Protocol (PTP) algorithm in a network and to assess the accuracy and capabilities of Time Delay Attack and detection algorithms. The proposed model is applicable to implement the synchronisation process in different network topologies ...
Mohsen Moradi, Amir Hossein Jahangir
wiley   +1 more source

Concept of Operations of Cislunar Mirror Satellites to Provide Augmented Lighting of Dim Space-Based Objects

, 2023
The imaging and inspection of Resident Space Objects (RSOs) is an increasingly important mission as space-faring nations and commercial enterprises alike seek to develop means to repair and refuel spacecraft, as well as de-orbit RSOs to reduce orbital ...
Cook, Alec E.
core  

Inverse Radon transform scaling via spin rate estimation for resident space object size assessment

, 2019
The population of resident space objects (RSOs) has increased drastically during the past years. These objects became a great threat for active satellites.
Martorella M., Ghio S.
core   +2 more sources

Direct Action at Home: Performative Spaces of Tenant Resistance in Los Angeles

Antipode, Volume 56, Issue 6, Page 2253-2272, November 2024.
Abstract Given the rising number of evictions in the United States, self‐organised and housing‐insecure tenants actively fight back against their harassment and displacement. Because of the high rate of informal evictions, housing struggles between tenants and landlords are not only fought in courts; they often take place at the homes that they ...
Faiza Moatasim
wiley   +1 more source

DVB-S2 passive bistatic radar for resident space object detection: Preliminary results

, 2020
The observation of objects residing at Earth orbit is of fundamental importance from the military and civil point of view. This paper investigates the feasibility of a DVBS2 passive bistatic radar for detection of resident space objects (RSOs) in Low ...
Saverino A. L., Capria A., Martorella M., Hajdaraj Z., Gentile L.   +4 more
core   +2 more sources