Browsing by Author "Ruiz de Azua, Joan Adria"
Now showing items 1-14 of 14
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A case study of an hybrid RF and optical inter-satellite link terminal to enhance optical pointing
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Conference report
Open AccessThe attitude determination and control system of a satellite plays a crucial role, especially in optical communication systems due to the narrow field-of-view of the laser. In the last years, the space ecosystem has shown ... -
Architecting CubeSat constellations for messaging service, Part I
(2024-10-01)
Article
Open AccessIn today’s modern and globalized world, connectivity is a key factor for businesses, production facilities, sensor networks, and ordinary people. However, there are still populated areas which are not covered by ground-based ... -
Contribución a un sistema de simulación para satélites federados mediante Hardware in the Loop
(Unión Científica Internacional de Radio (URSI), 2024)
Conference report
Open AccessFederated Satellite Systems arise as a solution to enhance the performance of Earth observation and telecommunications systems in response to the increasing demand and proliferation of small satellites in orbit. However, ... -
Deployment of NB-IoT NTN core network functions on Software Defined Radio (SDR) nanosatellites: approach and performance assessment
(International Astronautical Federation (IAF), 2023)
Conference report
Restricted access - publisher's policyAccording to forecasts, around 10 billion connected devices in the world will exchange data over the Internet by2028 and the significant connections increase threatens to congest terrestrial networks. These devices will ... -
Design and validation of a dual-band circular polarization patch antenna and stripline combiner for the FSSCat mission
(2023-07)
Article
Open AccessThe FMPL-2 payload on board the 3Cat-5/A 6 Unit CubeSat, part of the FSSCat CubeSat mission, includes a dual L-Band Microwave Radiometer and a Global Navigation Satellite System Reflectometer, in one instrument, implemented ... -
Design of a deployable helix antenna at L-Band for a 1-Unit CubeSat: from theoretical analysis to flight model results
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-05-01)
Article
Open AccessThe 3Cat-4 mission aims at demonstrating the capabilities of a CubeSat to perform Earth Observation (EO) by integrating a combined GNSS-R and Microwave Radiometer payload into a 1-Unit CubeSat. One of the greatest challenges ... -
Development of a simulator for coverage planning of a 6G/IoT constellation
(2023)
Conference report
Restricted access - publisher's policyThe uprising of 6G/IoT low-Earth orbit satellite constellations in the last decades has brought on challenges in designing an efficient way to handle its operation. The objective of this paper is to present a solution to ... -
Enhancing satellite non-terrestrial networks through advanced constellation management: optimizing in-orbit resources for NB-IoT
(Institute of Electrical and Electronics Engineers (IEEE), 2024-04-02)
Article
Open AccessThis paper presents a novel autonomous management system for satellite-based Non-Terrestrial Networks (NTN). It addresses the challenges of managing the operations of Low Earth Orbit (LEO) constellations for the Internet ... -
Evaluation method and case study of satellite quantum key distribution for terrestrial networks
(2024)
Conference report
Open AccessSecurity is a major concern of digital society, and quantum key distribution (QKD) can contribute with an unconditional secure mechanism for symmetric key distribution. Satellites have the opportunity to overcome the range ... -
Integrating satellite constellation and mobile operations for non-terrestrial networks: preliminary results of dynamic scheduling
(2024)
Conference report
Open AccessThe integration of terrestrial networks with Non-Terrestrial Networks requires a comprehensive management framework to address the mutual impact between satellite operations and network services. Past research by the authors ... -
On-demand satellite payload execution strategy for natural disasters monitoring using LoRa: observation requirements and optimum medium access layer mechanisms
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-01)
Article
Open AccessNatural disasters and catastrophes are responsible for numerous casualties and important economic losses. They can be monitored either with in-situ or spaceborne instruments. However, these monitoring systems are not ... -
Towards 6G non-terrestrial networks: an autonomous constellation management engine
(2023)
Conference report
Restricted access - publisher's policyThe mobile communications industry is nowadays trying to integrate satellite networks into its current and predominant architecture. One challenge is the management and operation of the non-terrestrial network, where ... -
Towards federated satellite systems and internet of satellites: the federation deployment control protocol
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-01)
Article
Open AccessPresently, the Earth Observation community is demanding applications that provide low latency and high downlink capabilities. An increase in downlink contacts becomes essential to meet these new requirements. The Federated ... -
Virtual Satellite Network Simulator (VSNeS): a simulation engine to virtualize non-terrestrial networks
(International Astronautical Federation (IAF), 2023)
Conference report
Restricted access - publisher's policyThe space has been populated by a wide range of satellite systems from governmental and private space entities. Monolithic satellites have been ruling the space by providing a custom design that accomplishes a specific ...
