Inter-Satellite Location Measurement of the Formation Flight Satellite System Using UWB Signal

This paper is committed to the relative navigation of Unmanned Aerial Vehicles (UAVs) flying in formation flight. The concept and methods of swarm UAVs technology and architecture have been explained. The relative state estimation models of unmanned aerial vehicles which are based on separate systems as Inertial Navigation Systems (INS)&Global Navigation Satellite System (GNSS), Laser&INS and Vision based techniques have been compared via various approaches. The sensors are used individually or integrated each other via sensor integration for solving relative navigation problems. The UAV relative navigation models are varied as stated in operation area, type of platform and environment. The aim of this article is to understand the correlation between relative navigation systems and potency of state estimation algorithms as well during formation flight of UAV.

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Review On Relative Navigation Methods of Space Vehicles

Current Chinese Science ◽

10.2174/2666001601999201210205418 ◽

2020 ◽

Vol 01 ◽

Author(s):

T. Y. Erkec ◽

C. Hajiyev

Keyword(s):

Satellite System ◽

Low Earth Orbit ◽

Formation Flight ◽

Space Vehicles ◽

Navigation Satellite ◽

Navigation Systems ◽

Relative Navigation ◽

Inertial Navigation Systems ◽

Global Navigation Satellite ◽

Usage Area

Abstract:: This paper is devoted to understand relative navigation models which are used for space vehicles. The relative navigations models and aproaches which are based on different sytems (Inertial Navigation Systems (INS)& Global Navigation Satellite System (GNSS) , Laser&INS, Vision Based, etc.) are compared. These models and aproaches can be used individually or combined with each other for solving the relative navigation problems. Advantages and disadvanteges of the models vary according to the usage area, platform type and environment. Different methods and aproaches exist in addition to different estimation and optimization algoritms for adaptation, control and sensor fusion. Most of the models assume perfect attitude conditions. This study consideres satellites position estimates according to eachother within formation on the Low Earth Orbit (LEO). Also the aim of this article is to understand corelation between the relative navigation systems and effectiveness of the algorithms which are used for the estimating states during constellation or formation flight.

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Applying GA Algorithm to the Modular Division for Distributed Reconfigurable Satellite System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.482.292 ◽

2013 ◽

Vol 482 ◽

pp. 292-296

Author(s):

Shuo Zhang ◽

Guo Qiang Wu ◽

Xiu Li Han ◽

Rong Bo Cao ◽

Yong Li ◽

...

Keyword(s):

Development Strategy ◽

High Reliability ◽

Satellite System ◽

Formation Flight ◽

Satellite Systems ◽

Systems Planning ◽

System A ◽

Ga Algorithm ◽

Function Module ◽

Set Up

For the problem of module division for distributed reconfigurable satellite system. A satellite function tree top-down is set up in this paper. And the genetic algorithm was applied in the module division. Finally the entire satellite was decomposed into various standard parts. In practice, users only need to combine those standard parts into a specific function module according to the requirements. Then send those modules into their orbit. And those modules through the way of formation flight, wireless connection to fulfill the task. Considering China's space development strategy, satellite systems long life and high reliability, upgrading, expansibility, satellite systems planning, running, production all kinds of uncertainty factors. Finally the satellite system was divided into 15 standard parts.

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