Ehsan Mousivand; Sajjad Ghazanfarinia; Yaser Saffar; Masoud Khoshsima
Abstract
Satellite Constellations are the new approach to achieve the capabilities that were previously expected from large and complex satellites. This paper reviews activities and related satellite constellation of about 130 companies and research institutes in the world, with the aim of reviewing the approach ...
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Satellite Constellations are the new approach to achieve the capabilities that were previously expected from large and complex satellites. This paper reviews activities and related satellite constellation of about 130 companies and research institutes in the world, with the aim of reviewing the approach of missions carried out under the name of satellite constellation. Based on the investigations, the main missions performed by these constellations have been with the aim of providing communication services and include 27% of all missions ((Including internet of Things with a 16% and Machine to Machine Services with a 6%) Another important mission is Earth Observation (with 19%), which is carried out with the aim of continuous monitoring and beter management of the earth planet.The most favorite configuration in constellations is based on microsatellites with 42% of all configurations. In this article, by presenting the analysis and results of this studied sample, the tendency towards satellite constellations and the role of Cubesats in this category of space missions have been investigated. The aim of this reseach is to highlight the impact of theses space systems in the space industry and economy by providing Solutions based on constellations. Results discuss the Future of Constellations and Cubesats and their common effect on New Space both in Space Industry Level and Space Economy. This review may help researchers to work on similar studies with business approaches, too
mechanic
Sajjad Ghazanfarinia; Ehsan Mousivand; Masoud Khoshsima; Yaser Saffar
Abstract
This research is going to present design of a LEO Constellation for Navigation service with minimum number of Satellites. The goal is to achieve Dilution Of Precision (DOP) less than 6. This Requirement is going to be achieved using predefined launch vehicles limitation on orbit which is 500 km in circular ...
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This research is going to present design of a LEO Constellation for Navigation service with minimum number of Satellites. The goal is to achieve Dilution Of Precision (DOP) less than 6. This Requirement is going to be achieved using predefined launch vehicles limitation on orbit which is 500 km in circular orbit altitude and 55 degrees for orbit inclination. Design has been done based on Analyses resulting in Optimization for least number of Satellites in this orbit, to satisfy all requirements for Navigation Performance and in conformance with the constraints related to launch and orbit. Multiple analyses have been done resulted in Constellation with 324 satellites, formed in 18 Orbits with 18 Satellites in each. This design shows the performance of 4.7 in DOP for a User located in Tehran, however, the distribution of DOP over the target area shows that the requirement has been passed through the whole region
