Measure of chaos and adaptive synchronization of chaotic satellite systems
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Dynamics and Control"
DOI: 10.1007/s40435-018-0481-4
Abstract: In this paper, we analyze the chaotic behaviour of satellite system through the dissipative, equilibrium points, bifurcation diagrams, Poincare section maps, Lyapunov exponents and Kaplan–Yorke dimension. We observe the qualitative behaviour of satellite systems through… read more here.
Keywords: satellite; chaotic satellite; system; adaptive synchronization ... See more keywords
Towards the automated operations of large distributed satellite systems. Part 2: Classifications and tools
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Space Research"
DOI: 10.1016/j.asr.2020.08.018
Abstract: Abstract Recent developments have seen a trend towards larger constellations of spacecraft, with some proposals featuring constellations of more than 10.000 satellites. While similar concepts for large constellations already existed in the past, traditional satellite… read more here.
Keywords: operations large; space; distributed satellite; satellite systems ... See more keywords
Low-cost positioning with rotating antenna in constrained environment for global navigation satellite systems
Sign Up to like & getrecommendations! Published in 2018 at "Electronics Letters"
DOI: 10.1049/el.2017.3381
Abstract: In high-precision relative positioning applications of global navigation satellite systems, multipath and phase centre offset/variation remain as the major coupled error sources, as they cannot be eliminated by the differential operation. A circular rotating low-cost… read more here.
Keywords: antenna; low cost; navigation satellite; global navigation ... See more keywords
Drones and global navigation satellite systems: current evidence from polar scientists
Sign Up to like & getrecommendations! Published in 2020 at "Royal Society Open Science"
DOI: 10.1098/rsos.191494
Abstract: Aerial unmanned vehicles, so-called drones, present a paradigm shift away from the long-term use by scientists of manned aeroplanes and helicopters. This is evident from the number of research articles that focus on data obtained… read more here.
Keywords: gnss; navigation; navigation satellite; global navigation ... See more keywords
Beam Coverage Comparison of LEO Satellite Systems Based on User Diversification
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2959824
Abstract: To achieve global network coverage and the need for high-speed communication, the idea of providing Internet access from space has made a strong comeback in recent years. The low earth orbit (LEO) communication satellite constellation… read more here.
Keywords: user diversification; satellite systems; beam coverage; model ... See more keywords
A Novel Dissemination Protocol to Deploy Opportunistic Services in Federated Satellite Systems
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3013655
Abstract: Earth Observation applications are demanding higher spatial resolution and shorter revisit times than existing systems, which can be met by ad-hoc constellations of Federated Satellite Systems. These systems are distributed satellite architectures which rely on… read more here.
Keywords: dissemination protocol; services federated; satellite systems; federated satellite ... See more keywords
Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3169499
Abstract: Cohesive Distributed Satellite Systems (CDSSs) is a key enabling technology for the future of remote sensing and communication missions. However, they have to meet strict synchronization requirements before their use is generalized. When clock or… read more here.
Keywords: satellite systems; techniques distributed; survey; synchronization techniques ... See more keywords
Joint estimation of carrier frequency and phase offset based on pilot symbols in quasi-constant envelope OFDM satellite systems
Sign Up to like & getrecommendations! Published in 2017 at "China Communications"
DOI: 10.1109/cc.2017.8019135
Abstract: Spectral efficiency and energy efficiency are two important performance indicators of satellite systems. The Quasi-Constant Envelope Orthogonal Frequency Division Multiplexing (QCE-OFDM) technique can achieve both high spectral efficiency and low peak-to-average power ratio (PAPR). Therefore,… read more here.
Keywords: quasi constant; frequency; pilot; carrier ... See more keywords
Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal on Selected Areas in Communications"
DOI: 10.1109/jsac.2022.3196114
Abstract: The space-air-ground-sea integrated network (SAGSIN) plays an important role in offering global coverage. To improve the efficient utilization of spectral and hardware resources in the SAGSIN, integrated sensing and communications (ISAC) has drawn extensive attention.… read more here.
Keywords: leo satellite; beam squint; satellite systems;
Progress and Challenges in Intelligent Remote Sensing Satellite Systems
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2022.3148139
Abstract: Due to advances in remote sensing satellite imaging and image processing technologies and their wide applications, intelligent remote sensing satellites are facing an opportunity for rapid development. The key technologies, standards, and laws of intelligent… read more here.
Keywords: remote; sensing satellite; remote sensing; sensing satellites ... See more keywords
Capacity Allocation Mechanisms in High-Throughput Satellite Systems: One-to-Many Pairings
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Systems Journal"
DOI: 10.1109/jsyst.2021.3128211
Abstract: In this article, one-to-many suboptimal assignments, for various capacity allocation metrics, in high-throughput multibeam satellite systems, under the smart gateway diversity concept, are studied. Furthermore, in the analysis both the offered and requested capacities in… read more here.
Keywords: capacity allocation; high throughput; satellite systems; one many ... See more keywords