The satellite formation flying system is a collaborative system where multiple satellites cooperate in a formation to perform consensus mission in space LEO (Low-Earth-Orbit) through librations points. In recent years, this kind of formation flying systems are getting attention because of reduced cost of mission, failures and recovery and flexibility. If one big spacecraft is at a mission and i...

The Computer Aided Medical Diagnosis and Surgery System (CAMDASS) is a tool that is aimed at providing medical guidance and automated diagnostic support to non-experts for performing medical procedures, especially motivated by astronauts on long term spaceflights beyond Low Earth Orbit (LEO) where restricted communication makes tele-medicine solutions impractical. The paper introduces the motiv...

Delay/Disruption Tolerant Networking (DTN) “bundles” have been proposed for deep-space communication in the “Interplanetary Internet.” This paper describes the first DTN bundle protocol testing from space, using the United Kingdom Disaster Monitoring Constellation (UK-DMC) satellite in Low Earth Orbit (LEO). The mismatch problems between the different conditions of the private dedicated space-t...

During the last few decades, battery Depth-of-Discharge (DoD) problem has always been a challenging and limiting factor on satellite-mission duration. This paper, from a system engineering point of view, comprehensively describes the power-hungry phases of a typical Low-Earth Orbit (LEO) satellite mission. Theses phases, each by itself or in any combination(s), may lead to high DoD levels (main...

Satellite networks offer a number of desirable characteristics including wide area coverage, unique broadcast capabilities, the ability to communicate with hand-held devices, and low cost-per-minute access time, among others. Low Earth Orbit (LEO) satellites are expected to support multimedia traffic and to provide their users with the appropriate Quality of Service (QoS). However, the limited ...

Abstract The role of N 2 in the upper atmosphere on atomic oxygen (AO)-induced erosion polyimide low Earth orbit (LEO) and sub-LEO is investigated through ground-based experiments flight data. experiment performed by adding an Ar beam at same collision energy as undecomposed O component AO formed laser detonation to simulate physical effect simultaneous sub-LEO. added dual-pulsed supersonic val...

One of the unique traffic features of low earth orbit (LEO) satellite networks is time-variant and nonuniform load distribution. This feature results in a locally biased congestion problem for the LEO satellite systems. In this paper, we propose a traJjcic load balancing scheme to resolve the congestion problem in such traffic scenarios. The proposing scheme makes use of near-neighbor residual ...

Kapton polyimde is extensively used in solar arrays, spacecraft thermal blankets, and space inflatable structures. Upon exposure to atomic oxygen in low Earth orbit (LEO), Kapton is severely eroded. An effective approach to prevent this erosion is to incorporate polyhedral oligomeric silsesquioxane (POSS) into the polyimide matrix by copolymerizing POSS monomers with the polyimide precursor. Th...

Now a days Low earth orbit satellite networks are used to provide global coverage to users in remote areas. Since LEO’s are continuously revolving, they traverse their orbits and thus cause frequent user handovers. So for providing better service to the user and improving the LEO satellite network performance a Cross-layer design and Ant-colony optimization based Loadbalancing routing algorithm...