Satellite Systems for Personal Applications

Richharia, M.; Westbrook, L.D.

doi:10.1002/9780470665619

Cited by 24 publications

(13 citation statements)

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“…The BGAN fixed infrastructure consists of three BGAN gateways located in Italy, the Netherlands and Hawaii. The radio frequency system feeds the information received from the user equipment to a radio network controller, which interfaces with the core network in order to route calls to the public or private network.…”

Section: State‐of‐the‐art Reviewmentioning

confidence: 99%

“…The BGAN fixed infrastructure consists of three BGAN gateways [37] located in Italy, the Netherlands and Hawaii. The radio frequency system feeds the information received from the user equipment to a radio network controller, which interfaces with the core network in order to route The BGAN system is compatible with terrestrial UMTS services, enabling users equipped with BGAN terminals to access these services over the near-global terrestrial coverage provided by this system.…”

Section: Global Satellite Phone Service the Global Satellite Phone Smentioning

confidence: 99%

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A survey of architectures and scenarios in satellite‐based wireless sensor networks: system design aspects

Celandroni

Ferro

Gotta

et al. 2012

Satell Commun Network

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This paper is not a survey related to generic wireless sensor networks (WSNs), which have been largely treated in a number of survey papers addressing more focused issues; rather, it specifically addresses architectural aspects related to WSNs in some way connected with a satellite link, a topic that presents challenging interworking aspects. The main objective is to provide an overview of the potential role of a satellite segment in future WSNs. In this perspective, requirements of the most meaningful WSN applications have been drawn and matched to characteristics of various satellite/space systems in order to identify suitable integrated configurations. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: State‐of‐the‐art Reviewmentioning

confidence: 99%

Section: Global Satellite Phone Service the Global Satellite Phone Smentioning

confidence: 99%

A survey of architectures and scenarios in satellite‐based wireless sensor networks: system design aspects

Celandroni

Ferro

Gotta

et al. 2012

Satell Commun Network

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“…Reference axis Figure 3. Circular movement of a communication satellite model (Richharia & Westbrook 2011).…”

Section: Mathematical Modelmentioning

confidence: 99%

Implementation of a Communication Satellite Orbit Controller Design Using State Space Techniques

Hla

Lae

Kyaw

et al. 2012

AJSTD

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This research is of great importance for controlling the altitude of a satellite, especially one used for global communications in a geo-stationary orbit. The objective of this research was to advance a design based on the modelling of an orbit controller for a satellite orbiting into a circular orbit. This encompasses a good understanding of the system’s dynamics. Once a satellite is launchedinto a desired orbit, it never remains in this ideal orbit. The external forces present in space cause perturbations to the ideal orbit. To bring the satellite back into the desired orbit, on-board thrusters provide the in-orbit propulsion. In this research, the altitude of the satellite was controlled by a thruster fashioned by the on-board thrusters installed in the radial and tangential directions. However,dictated by the controllable prerequisite, we achieved dynamic system stabilization with the aid of two thrusters as well as one thruster. Thus, the feedback dynamic control system responded to both the two-input and the single-input cases. The model developed was effectively a linearized, normalizedand state-space model. The simulation of this model was based on the MATLAB environment. The design evolved accordingly was used to revise the effect of pole placement on the controlling parameters, such as settling time, peak time, overshoot, and damping ratio of the closed-loop system. This enabled us to make predictions on the stability requirements for several dynamic systems ofthe type considered. The design tool thus developed was applied to an actual current communication satellite design. The design results were evaluated and recommendations completed.

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“…In order to meet the demands of the latest generation of portable satellite terminals, it is needed to design hybrid systems able to receive and process both communication and navigation signals [1,2], allowing the creation of aggregated location and navigation services to be offered to network users [3,4].…”

Section: Introductionmentioning

confidence: 99%

Unified Processing Structure for Communication and Navigation signals in modems for lightweight satellite stations

Vélez

Percybrooks

Antonov-Antipov³

2012

JART

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The present article shows the design and test of a unified-processing device for detection and demodulation of narrowand broadband communication signals, as well as navigation signals from GLONASS and GPS systems. The specificprocessing for each type of signal is described within the general framework of the proposed device. Performanceindicators, such as symbol error probability (SEP) and energy losses, were computed using simulations of the deviceand the corresponding results are presented for discussion.

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Satellite Systems for Personal Applications

Cited by 24 publications

References 0 publications

A survey of architectures and scenarios in satellite‐based wireless sensor networks: system design aspects

A survey of architectures and scenarios in satellite‐based wireless sensor networks: system design aspects

Implementation of a Communication Satellite Orbit Controller Design Using State Space Techniques

Unified Processing Structure for Communication and Navigation signals in modems for lightweight satellite stations

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