Concept
Communications satellite
Related publications (131)
VDMNav: Software Architecture for Aerodynamically Constrained Navigation on Small Fixed-Wing Drones
Jan Skaloud, Gabriel François Laupré
Navigation of drones is predominantly based on sensor fusion algorithms. Most of these algorithms make use of some form of Bayesian filtering with a majority employing an Extended Kalman Filter (EKF), wherein inertial measurements are fused with a Global N ...
2024Design Methodology for Wideband Bowtie Patch Antenna for 5G mmWave Applications
Anja Skrivervik, Abolfazl Azari
Millimeter wave (mmWave) frequencies has become a research area of interest in recent years because of providing broad available bandwidth and thus higher data rates. Wideband mmWave antenna is one of the important development areas in wireless communicati ...
IEEE2023Toward Metantennas: Metamaterial-Based Antennas for Wireless Communications
Antennas have historically been the most common electromagnetic (EM) technology for wireless communication systems. Antenna as hardware is entirely dependent on the EM properties of the materials used, mostly related to the permittivity and permeability. I ...
Piscataway2023Microstrip patch antennas with broad beamwidth
Microstrip antennas offer a broad set of advantages such as low profile, light weight, easy fabrication and low cost. As these are desirable or even critical for a broad range of applications, there has been a large interest for these antennas in the anten ...
EPFL2023Lightning Nowcasting Using Solely Lightning Data
Marcos Rubinstein, Amirhossein Mostajabi
Lightning is directly or indirectly responsible for significant human casualties and property damage worldwide. A timely prediction of its occurrence can enable authorities and the public to take necessary precautionary actions resulting in diminishing the ...
Basel2023Ion temperature spectroscopic measurements in high rotation discharges by means of X-ray diagnostic at JET
Measurement of the X-ray spectra of the He-like Ni ions (Ni26+) and their dielectronic satellites (Ni25+, Ni24+, and Ni23+) plays a crucial role in determination of electronic and ion temperature of plasma in the JET device. Because n >= 3 satellites of Ni ...
IOP Publishing Ltd2022High Performance Low cost Transition Connectors for 5G mmWave Applications
Anja Skrivervik, Abolfazl Azari
Millimeter wave (mmWave) is an interesting research area in recent years. Transition connectors are key components of mmWave passive systems. The commercially available cable connectors are lossy and expensive in mmWave frequencies. In this paper, various ...
IEEE2022GNSS/INS Kalman Filter Integrity Monitoring with Uncertain Time Correlated Error Processes
Safety-critical navigation applications require that estimation errors be reliably quantified and bounded. Over the last decade, significant effort has been put to guarantee a bounded position estimation by using Global Navigation Satellite Systems (GNSS) ...
EPFL2022Towards reliable retrievals of cloud droplet number for non-precipitating planetary boundary layer clouds and their susceptibility to aerosol
Athanasios Nenes, Paraskevi Georgakaki, Romanos Foskinis
Remote sensing has been a key resource for developing extensive and detailed datasets for studying and constraining aerosol-cloud-climate interactions. However, aerosol-cloud collocation challenges, algorithm limitations, as well as difficulties in unravel ...
FRONTIERS MEDIA SA2022Intensifying space activity calls for increased scrutiny of risks
As the pace of space activities accelerates and societies become more reliant on space-based systems, the associated risks deserve more attention. Satellites form a critical infrastructure on which military, civil and commercial entities rely. The services ...
International Risk Governance Center2021