scholarly journals Effects of Staged Deployment on the Economics of Global Broadband Internet Satellite Constellations

2021 ◽  
Author(s):  
Stephen Bosomworth ◽  
Paul T. Grogan
Keyword(s):  
Opportunity Cost ◽  
New Technologies ◽  
Low Earth Orbit ◽  
Satellite Constellations ◽  
Broadband Internet ◽  
Satellite Constellation ◽  
New Methods ◽  
Constellation Design ◽  
Global Demand ◽  
Average Activity

Historically constellations of communication satellites were designed to function optimally for a specific expected global demand. This estimation is based on assumptions of the number of users and the average activity per user, both of which are highly uncertain. This uncertainty can cause deployed constellations having a capacity far lower than demand, lowering performance and creating opportunity cost, or far higher than demand, potentially bankrupting the company that owns the system as income cannot recoup the initial investment. An approach has previously been proposed wherein a satellite constellation is deployed in stages with each stage increasing the capacity of the constellation through reconfiguration of on-orbit satellites and launch of new satellites. This method has been previously demonstrated to significantly reduce the lifecycle cost of low-earth orbit communication satellite constellations. Recent proposals for satellite constellations to support global broadband internet providers have introduced new technologies as well as new methods of constellation design resulting in far larger constellations than previously envisioned (mega-constellations). Renewed interest and investment in the development global broadband networks demand a return to this topic to investigate its impact in this space.

scholarly journals Design Coverage Optimization Based on Position of Constellations and Cost of the Launch Vehicle

2021 ◽  
Vol 17 ◽  
pp. 1160-1190
Author(s):  
Saeid Kohani ◽  
Peng Zong ◽  
Fengfan Yang
Keyword(s):  
Genetic Algorithms ◽  
Optimal Design ◽  
Launch Vehicle ◽  
Multiple Objective ◽  
Satellite Constellations ◽  
Coverage Optimization ◽  
Satellite Constellation ◽  
Constellation Design ◽  
Global Coverage ◽  
Simulation Results

This research will analyze the tradeoffs between coverage optimization based on Position dilution of precision (PDOP) and cost of the launch vehicle. It adopts MATLAB and STK tools along with multiple objective genetic algorithms (MOGA) to explore the trade space for the constellation designs at different orbital altitudes. The objective of optimal design solutions is inferred to determine the economic and efficient LEO, MEO, HEO or hybrid constellations and simulation results are presented to optimize the design of satellite constellations. The benefits of this research are the optimization of satellite constellation design, which reduces costs and increases regional and global coverage with the least number of satellites. The result of this project is the optimization of the number of constellation satellites in several orbital planes in LEO orbit. Validations are based on reviewing the results of several simulations. The results of graphs and tables are presented in the last two sections and are taken from the results of several simulations.

Design of a Low Earth Orbit Satellite Constellation Network for Air Traffic Surveillance

2020 ◽  
Vol 73 (6) ◽  
pp. 1263-1283
Author(s):  
Jianming Guo ◽  
Lei Yang ◽  
Quan Chen ◽  
Sunquan Yu ◽  
Xiaoqian Chen ◽  
...  
Keyword(s):  
Evaluation Model ◽  
Low Earth Orbit ◽  
Air Traffic ◽  
Earth Orbit ◽  
Traffic Surveillance ◽  
Satellite Constellation ◽  
Constellation Design ◽  
Orbit Satellite ◽  
Satellite Links ◽  
Low Earth Orbit Satellite

The satellite constellation with automatic dependent surveillance-broadcast on-board is of great importance for air traffic surveillance due to its multiple advantages compared with traditional methods. Although some research has been conducted on satellite constellation design based on coverage performance, the findings cannot entirely satisfy all the requirements of air traffic surveillance owing to the lack of analysis on inter-satellite links and network transmission. This paper presents a novel design of a low earth orbit satellite constellation network to solve this problem. Based on the requirements of space-based surveillance, an evaluation model of constellation performance is proposed concerning coverage, link and transmission. The simulation results show that the evaluation model can reflect the performance of a satellite constellation network designed for a space-based surveillance system, and a 55-satellite constellation design scheme with fairly good performance can fulfil the function of global real-time air traffic surveillance.

ТЕЛЕВІЗІЙНА КОМУНІКАЦІЯ В КОНТЕКСТІ РОЗВИТКУ СУСПІЛЬСТВА

2020 ◽  
pp. 68
Author(s):  
O. Yatchuk ◽  
N. Kodatska
Keyword(s):  
Public Opinion ◽  
Mobile Communications ◽  
Mass Communication ◽  
New Technologies ◽  
Modern World ◽  
Digital Television ◽  
Broadband Internet ◽  
Television Content ◽  
The Usa ◽  
Traditional Technologies

<div><p><em>The article presents the dynamics of the main factors for the development of modern television, the transition from traditional technologies of television broadcasting to the latest technologies. The process of developing digital television and broadband has been technically determined to address the challenge of integrating new technologies into traditional TV content. Ways of expanding the possibilities of interaction between the viewer and the television producer in the context of overcoming the crisis of traditional technologies are analyzed. It is determined that integration, development of mobile communications and Internet technologies are a hallmark of the modern world media space and have a significant influence on the formation of public opinion. The analysis of actual media researches concerning problems of the theory of mass communication is carried out. The phenomenon of «social television», which combines watching TV with simultaneous communication in social networks, is considered. The author draws attention to the disclosure of the determining factors of media communication, the study of the process of feedback from viewers on television. It is stated that the development of modern technologies, namely digital broadcasting and introduction of broadband Internet access to create a multimedia platform that combines Internet communication services and television content, contributes to improving the mechanism of interaction between the TV and the viewer. The theory of the conceptualization of journalism based on identity construction is examined: journalists understand their audience and, as members of that audience, connect with their communities. An analysis of integrated journalistic activity is conducted, which consists of three stages: gathering, editing and disseminating information. It is determined that the influence of the Internet allows the consumer to play his or her role at each stage, thus helping the journalist determine the degree of relevance of the story to himself and to the potential audience. The common features of modern telecontent were singled out and a comparative analysis of the trend of development of interactive TV programs of the USA, UK and Ukraine was made.</em></p></div><p><strong><em>Key words:</em></strong><em> public opinion, two-vector communication, feedback, communication methods, television audience, country telephony.</em></p>

Satellite constellation design with genetic algorithms based on system performance

2016 ◽  
Vol 27 (2) ◽  
pp. 379-385 ◽  
Author(s):  
Xueying Wang ◽  
Jun Li ◽  
Tiebing Wang ◽  
Wei An ◽  
Weidong Sheng
Keyword(s):  
Genetic Algorithms ◽  
System Performance ◽  
Satellite Constellation ◽  
Constellation Design

Radio Frequency Support for Space Systems Based on Multi-Satellite Constellations Taking into Account the ITU-R Requirements and the WRC-19 Results

2021 ◽  
Vol 8 (4) ◽  
pp. 72-76
Author(s):  
А. А. Talanov ◽  
◽  
S. А. Fedotov ◽  
А. М. Stepanov ◽  
◽  
...  
Keyword(s):  
Radio Frequency ◽  
Frequency Spectrum ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Satellite Communication ◽  
Space Systems ◽  
Satellite Constellations ◽  
Broadband Internet ◽  
State Commission ◽  
Radio Frequency Spectrum

Deployment of space systems based on multi-satellite constellations to provide broadband Internet access and communication services acutely raises the question of their radio frequency support including issues of electromagnetic compatibility (EMC) between competing space systems using multi-satellite constellations (StarLink, OneWeb, Kuiper, etc.), their EMC with traditional space systems (satellite communication systems that employ spacecraft in geostationary and non-geostationary orbits, space systems of other services), as well as regulatory issues of entering into service and staged deployment of space systems. The article formulates the problematic issues of radio frequency support of modern space systems taking into account the trends of satellite constellations deployment and proposes the solutions with consideration to international and national requirements in the regulation of radio frequency spectrum including the ITU requirements and the requirements of Russian State Commission for Radio Frequencies. The paper shows the ways to share the radio frequency spectrum to meet new requirements of the World Radiocommunication Conference 2019 (WRC-19).

Satellite constellation design algorithm for remote sensing of diurnal cycles phenomena

2018 ◽  
Vol 62 (9) ◽  
pp. 2529-2550 ◽  
Author(s):  
Sung Wook Paek ◽  
Luzius G. Kronig ◽  
Anton B. Ivanov ◽  
Olivier L. de Weck
Keyword(s):  
Remote Sensing ◽  
Design Algorithm ◽  
Diurnal Cycles ◽  
Satellite Constellation ◽  
Constellation Design
Sign in / Sign up

Export Citation Format

Share Document