Results 71 to 80 of about 37,809 (196)

Formation Flight in Low-Earth-Orbit at 150m Distance; AOCS In-Orbit Experience

open access: yes, 2012
AOCS operations for two satellites flying at ~514 km altitude with unprecedented small separation of 150 m upwards pose various new challenges and require creative solutions.
Schulze, Daniel   +2 more
core   +1 more source

Performance Assessment using ACM in DVB-S2/Advanced DVB-RCS Satellite Systems

open access: yes, 2009
This paper presents the benefits of using adaptive coding and modulation in DVB-S2/advanced DVB-RCS satellite systems. The results are based on a satellite system simulator which was developed during an ESA study.
Boussemart, Vincent   +3 more
core   +1 more source

MicroEnterprise Americas: Fall, 2006

open access: yes, 2006
This issue of MicroEnterprise Americas explores the various issues and challenges of extending economic opportunities to all. The Special Section of the magazine focuses on access to markets, which most microenterprises characterize as the single most ...
Inter-American Development Bank
core   +1 more source

Housing Finance in Chile: The Experience in Primary and Secondary Mortgage Financing [PDF]

open access: yes, 2000
This paper presents the experiences of the housing finance market in Chile. It was first presented at a regional conference on the development of mortgage securitization held at the Inter-American Development Bank.
Inter-American Development Bank
core   +1 more source

Solar Irradiance Mitigation in LEO Optical Inter-Satellite Links via Inter-Shell Based Path Optimization

open access: yesApplied Sciences
Solar irradiance is a critical factor influencing the reliability of optical inter-satellite links (O-ISLs). Despite its significance, limited research has focused on addressing this challenge.
Jae Seong Hwang   +2 more
doaj   +1 more source

E-SSA Satellite Messaging Return Channel: Performance Analysis and Field Trials Results

open access: yes, 2012
An open ITS platform combining interactive satellite services with other communication channels is being developed and evaluated in field trials within the SafeTRIP project [1]. Prototyping and in-field validation of a novel waveform for messaging return
M. Andrenacci   +17 more
core   +1 more source

Stratospheric Optical Inter-Platform Links for High Altitude Platforms

open access: yes, 2002
Optical propagation simulations for the case of a laser optical link between two stratospheric High Altitude Platforms have been performed. The simulations, together with communications link budget calculations, show that high data rate communications ...
Giggenbach, Dirk   +7 more
core   +1 more source

Horizontal Link Demonstration Over 143 km With CubeISL: The World's Smallest Commercial Optical Communication Payload for Inter-Satellite Links [PDF]

open access: yes
New developments in the field of free-space optical (FSO) communications are enabling a breakthrough in satellite miniaturization and data rates. The CubeISL laser communication terminal (LCT), developed by the German Aerospace Center (DLR), shall ...
Rödiger, Benjamin   +5 more
core  

A Tool for Satellite Communications: Advanced DVB-RCS / DVB-S2 System and Protocol Simulator

open access: yes, 2008
A tool has been designed to simulate broadband satellite communication systems and techniques: a system and protocol simulator based on advanced DVB-RCS and DVB-S2 standards.
Boussemart, Vincent   +3 more
core   +1 more source

Experimental Demonstration of a Unidirectional Integrated Ranging and Communication Scheme for Space-Based Gravitational Wave Detection

open access: yesApplied Sciences
The detection of space-based gravitational waves imposes stringent requirements on inter-satellite absolute distance measurement and communication capabilities.
Chenying Sun   +3 more
doaj   +1 more source

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