Data Relay Satellite
266 resources related to Data Relay Satellite
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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
Everything to do with radar hardware, techniques, processing and systems.
ICC 2020 - 2020 IEEE International Conference on Communications
All topics relating to existing and emerging communications networking technologies.
To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
GeMiC 2019 is a scientific conference aiming to bring together academic and industrial researchers from Germany and from abroad, to discuss research progress and prospects in the area of microwave and millimeter-wave theory and techniques.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.
Covers topics in the scope of IEEE Transactions on Communications but in the form of very brief publication (maximum of 6column lengths, including all diagrams and tables.)
IEE Colloquium on Earth Resource Sensing and the Data Relay Satellite, 1990
2015 IEEE International Conference on Space Optical Systems and Applications (ICSOS), 2015
After 13 years successful operation of Japanese first data relay satellite “KODAMA,” JAXA has initiated a new data relay satellite programme which adapts optical communication in the inter-orbit link. The programme includes development of a data relay satellite and optical terminals both for GEO (i.e. the data relay satellite) and LEO, Ka feeder link system to communicate between the data ...
IEE Colloquium on Earth Resource Sensing and the Data Relay Satellite, 1990
The European Space Agency (ESA) is leading Europe in two major adventures in space, manned space flight and the exploration of the Earth. The manned space flight programme comprises Hermes, the European space plane, and Columbus, comprising both free-flying attached European elements of the International Space Station Freedom. The Earth exploration programme of the Agency will comprise a series of ...
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2012
This paper introduces the development works of low temperature co-fired ceramic (LTCC) for tracking and data relay satellite (TDRS) phased array antenna system. The evolution of the LTCC technology is presented. And several examples including passive and hybrid integrated devices are demonstrated which could be used for phased array antenna system. For the space environment, the challenges and issues of ...
2009 Second International Conference on Intelligent Computation Technology and Automation, 2009
Planning of Tracking and data relay satellite is a important problem which focuses much attention recently. Based on the analysis of operation planning for tracking and data relay satellite (TDRS), a new approach of modeling of operation planning based on state and action models is proposed, which has powerful representation capabilities compared with traditional planning approach. The domain knowledge of ...
The Full Spectrum: COSMIC Satellites Use GPS to Forecast Weather
'Father of GPS' Brad Parkinson: IEEE Medal of Honor 2018
MicroApps: Flexible Digital Modulation Testing for Satellite Regenerative Payloads (Agilent Technologies)
Control of a Fully-Actuated Airship for Satellite Emulation
Q-Band CMOS Transmitter System-on-Chip - Tim Larocca - RFIC Showcase 2018
The Full Spectrum: Travelogue of the Atomic Age
2015 IEEE Honors: IEEE Spectrum Emerging Technology Award
Brooklyn 5G Summit: Bringing Massive MIMO to reality
Synthetic Fuels to the Rescue?
Engineering the Big Bang
IEEE Day Milestone: HDTV
Visit to the Lightning Lab: Zapping Model Airplanes with Over 2 Million Volts
The 2010 IEEE Honors Ceremony
Facebook 10 Year Roadmap - Jin Bains - 5G World Forum Santa Clara 2018
Power: A Fundamental Ingredient of Advanced Science and Applied Technology - Adam Hamilton, APEC 2018
Explorations in BIG Data and sMall Data with a Fuzzy Perspective
Q&A with Dr. Sorel Reisman: IEEE Big Data Podcast, Episode 2
Laser Communication From Space Using Superconducting Detectors - ASC-2014 Plenary series - 12 of 13 - Friday 2014/8/15
2011 IEEE Awards James H. Mulligan, Jr. Education Medal - Raj Mittra
After 13 years successful operation of Japanese first data relay satellite “KODAMA,” JAXA has initiated a new data relay satellite programme which adapts optical communication in the inter-orbit link. The programme includes development of a data relay satellite and optical terminals both for GEO (i.e. the data relay satellite) and LEO, Ka feeder link system to communicate between the data relay satellite and ground stations and has data-relay service capability up to 1.8 Gbps. Targets launch year is 2019 in Japanese fiscal year. In the paper, the authors outline the plan of the programme and its technology.
The European Space Agency (ESA) is leading Europe in two major adventures in space, manned space flight and the exploration of the Earth. The manned space flight programme comprises Hermes, the European space plane, and Columbus, comprising both free-flying attached European elements of the International Space Station Freedom. The Earth exploration programme of the Agency will comprise a series of Polar Platforms In addition, European national space agencies plan to fly their own Earth exploration satellites. To support this In-Orbit Infrastructure, ESA has started development of a new space telecommunications network, based on the European Data Relay System, DRS.<<ETX>>
This paper introduces the development works of low temperature co-fired ceramic (LTCC) for tracking and data relay satellite (TDRS) phased array antenna system. The evolution of the LTCC technology is presented. And several examples including passive and hybrid integrated devices are demonstrated which could be used for phased array antenna system. For the space environment, the challenges and issues of the LTCC for the satellites application are also presented.
Planning of Tracking and data relay satellite is a important problem which focuses much attention recently. Based on the analysis of operation planning for tracking and data relay satellite (TDRS), a new approach of modeling of operation planning based on state and action models is proposed, which has powerful representation capabilities compared with traditional planning approach. The domain knowledge of TDRS is represented by using planning domain definition language(PDDL) ,which can represent duration constraints, resource constraints and exogenous events constraint. The domain model of operation planning for TDRS is constructed. By analyzing working mode of TDRS we can obtain useful domain knowledge which can be introduced to carry out decomposition of the operation plan into smaller sub-plans and give the corresponding selectable action set of each sub-plan, which can reduce the search space and improve the solving efficiency of operation planning problem.
The results of a study on the effect of mutual interference among S-band multiple access (SMA) system users of advanced tracking and data relay satellite system (ATDRSS) are presented. In the ATDRSS era, the SMA system is required to support data rates ranging from 10 kb/s to 3 Mb/s. The system will consist of four advanced tracking and data relay satellites (ATDRS) each supporting up to five telemetry links. All users have 10 MHz bandwidth with their carrier frequency equal to 2.2875 GHz. A hybrid SDMA/CDMA scheme is used to mitigate the effect of the interference among system users. SMA system interference probability is evaluated with CLASS software. User link margin degradation due to mutual interference between two users is evaluated. System interference probability is evaluated for the projected 1996 mission model, a reference mission model, and a modified reference mission model.<<ETX>>
The study of a data relay satellite which will be used for linking low-earth- orbiting (LEO) satellites with fixed earth terminals is presented. The authors describe the antenna subsystems presently based on large scannable reflector antennas for the interorbit links at S- (2 GHz) and Ka-bands (23/26 GHz) and on a fixed reconfigurable antenna for the feeder link with the earth stations located in Europe. Feasibility studies have been conducted in order to accommodate the antenna on different European spacecraft within the Ariane IV launcher constraints. A novel scanning technique is described which makes it possible to steer the reflector for up to 40 HPBWs with a loss of about 1 dB.<<ETX>>
A low complexity nonlinear equalizer for data relay satellite channel is presented. The nonlinear equalizer is base on the truncated third order Volterra filter, which is approximately implemented in low complexity form using the recently developed Correlation Subtraction Architecture of the Multistage Wiener Filter (CSA-MWF). CSA-MWF offers significantly faster convergence, as well as low sample support. After the Volterra kernels are estimated through CSA-MWF in training mode, a pipeline structure of the nonlinear equalizer is described, more than half of multipliers are saved. The proposed algorithm is verified by computer simulation. Results show that the nonlinear equalization outperforms linear equalization with more than 1dB gain for 16QAM, and only one to fifth of samples are needed comparing to Least Mean Square algorithm based.
The platform will provide a facility in low Earth, polar, Sun synchronous orbit offering standard resources such as power, data management, communications, pointing, to a wide variety of instruments and payload complements. It is modular in concept, comprising separately developed and integrated service and payload modules. Communications links are provided at S-band, at X-band for direct to ground transmission of payload data and at Ka- band via the European Data Relay Satellite (DRS) for commanding and for the transmission of instrument data. A brief description of the polar platform design is provided, focusing on some of the more critical areas which relate to challenging engineering or technology issues. An outline of the operational capabilities offered by the platform is also given showing the flexibility in operations afforded by the spacecraft design and the relationship with the DRS and ground segment infrastructures.<<ETX>>
In data relay satellite (DRS) systems, users compete for limited intersatellite link antenna beam (ILAB) resources of data relay satellites by submitting excessive service requests to the mission scheduling center (MSC), which leads to serious scheduling conflicts and considerably degrades the QoS (quality of service). Two key challenges, the effective mission scheduling, and the coordination of multiple users' behaviors in submitting service requests, are involved in this issue. Most of the previous works have only focused on the mission scheduling issue, while neglecting the impact of users' selfish behavior on the QoS. In this paper, we investigate the resource allocation problem in DRS systems from the perspective of users' behavior analysis, i.e., joint coordination of users' selfish behavior in submitting service requests and mission scheduling. Since those selfish users have no incentive to cooperate in the one-shot interaction, we construct a repeated game framework with a proper punishment and forgiveness strategy to maximize users' payoffs and meanwhile to reduce the resource conflicts through a cooperative way. Moreover, an efficient cheat-proof mechanism is proposed to make users self-enforced to submit his/her actual resource requirement. Simulation results confirm that the proposed scheme can significantly improve the system operational performance. Compared with the payoffs under the Nash equilibrium in the one-shot game which is the main method of the current coordination scheme for DRS systems, our proposed joint method based on the repeated game framework can acquire 1.36 to 3.46 times gain in respect to 2 to 10 users, and also effectively decrease the resource conflicts.
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