Shuttle communications and tracking systems modeling and TDRSS link simulations studies



Publisher: Lincom Corp. in Los Angeles, Calif

Written in English
Published: Downloads: 66
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Subjects:

  • Data transmission systems.,
  • Space shuttles.

Edition Notes

Statementprepared by C.M. Chie ... [et al.].
SeriesNASA-CR -- 171861., NASA contractor report -- NASA CR-171861.
ContributionsChie, C. M., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15282980M

Communications Via Satellite. Though not yet in full operation for SL-1, a new communication facility called the Tracking and Data Relay Satellite System (TDRSS) will eventually provide coverage a large part of the time for Spacelab and all other Shuttle flights wherever they are in Earth orbit. LINKS Simulation Inputs: Transportation. The committee believes that modeling of the air transportation system is best accomplished by a suite of system models. 1 This chapter describes the committee’s understanding of system models and how they can be used to design and analyze evolutionary and revolutionary operational concepts, technologies, and other changes to the air transportation system. to six months, Orion engineers developed a state-of-the-art spacecraft with unique life support, propulsion, thermal protection and avionics systems. Building upon the best of Apollo and shuttle-era design, the Orion spacecraft includes both crew and service modules, a spacecraft adaptor, and a .

Shuttle-based compact systems are new automated multi-deep unit-load storage systems with lifts that can potentially achieve both low operational cost and large volume flexibility. In this paper, we develop novel queuing network models to estimate the performance of both single-tier and multi-tier shuttle-based compact systems. the model road network. Computer Simulation Modeling of Visitor Use Computer simulation models of visitor use were developed for the Glacier Gorge Trail to Alberta Falls and the Dream Lake Trail to Emerald Lake with discrete-event systems simulation software (7). These two sites were selected for visitor use modeling because theyFile Size: 1MB. To bridge these methodological gaps, this paper proposes a CA model for the joint design of dispatch headway and capacity for a one-to-one shuttle system under oversaturated traffic, which has been frequently observed in real UMTS traffic (Niu and Zhou, ). The major challenge of this problem is to deal with a series of passenger queue Cited by: 2. assessment s of tracking system s commonly involve time -consuming Monte Carlo simulations. A simple performance model allow s for fast computation s while employing approximations and simplified assumptions of the tracking system. In this thesis, a simulation model and a simple performance model of a tracking system are compared.

The Space Shuttle was a partially reusable low Earth orbital spacecraft system that was operated from to by the National Aeronautics and Space Administration (NASA) as part of the Space Shuttle official program name was Space Transportation System (STS), taken from a plan for a system of reusable spacecraft of which it was the only item funded for per launch: US$ million () to billion (). Simulation of Warehousing and Distribution Systems. Simulation of Trucking Operations. Simulation of Truck Dock Operations. Simulation of Ramp Operations in an Overnight Air Cargo Hub. L&T Simulation Software. Conclusions. ReferencesCited by: System trade off studies. The basic system figure of merit is the carrier to noise ratio C/N. If we calculate the C/N for each of the individual impairments, then the overall C/N of the system is given by, Figure 7 shows the results of combining the above equation with individual simulations used to compute the individual terms. fic simulation systems. Then, we propose a four-layered design methodology for the transportation modeling and followedbytwocasestudies— ATIS: The Next Generation and the I3D2 Transportation Simulation System. 2. Background onTraffic Simulation Systems Traffic modeling in the simulation environment is adopted.

Shuttle communications and tracking systems modeling and TDRSS link simulations studies Download PDF EPUB FB2

Various supporting studies, analyses, model development and link simulations to ensure that elements of the Shuttle C&T Systems meet Space Shuttle Program (SSP) requirements. The results of these efforts are documented inAppendices A-N­File Size: 7MB.

Get this from a library. Shuttle communications and tracking systems modeling and TDRSS link simulations studies. [C M Chie; United States. National Aeronautics and Space Administration.;]. An analytical simulation package (LinCsim) which allows the analytical verification of data transmission performance through TDRSS satellites was modified.

The work involved the modeling of the user transponder, TDRS, TDRS ground terminal, and link dynamics for forward and return links based on the TDRSS performance specifications (4) and the critical design reviews.

A SLAM simulation model of the system is employed to study various working patterns in the multiple-station multiple-queue service centers that provide licenses. There are two important telecommunications system interfaces: (1) between the spacecraft and the space shuttle, and (2) between the spacecraft and the Tracking and Data Relay Satellite System (TDRSS).

Since the shuttle and TDRSS are new, an introductory discussion of their basic telecommunication interface properties is : James C.

Springett, Peter W. Kinman. In order to evaluate the technical and operational problem areas and provide a recommendation, the enhancements to the Tracking and Data Delay Satellite System (TDRSS) and Shuttle must be evaluated through simulation and : W.

Lindsey, C. Chie, R. Cideciyan, K. Dessouky, Y. Su, C. Tsang. The Shuttle forward and return link models and the main features of the simulation are described. Sample results of the computer runs are provided for current power budgets and system design parameters. Typically, as in other systems, we are unable to experiment on the real urban traffic system and we need to develop models (analytic, simulations, prototypes, 3D visualizations, etc.) to gain a better understanding of the system behavior (the actual process of building the model provides awareness of the real system).

Space Shuttle/TDRSS communication and tracking systems analysis. By R. Cideciyan, K. Dessouky, C. Chie, the enhancements to the Tracking and Data Delay Satellite System (TDRSS) and Shuttle must be evaluated through simulation and analysis.

These enhancement techniques must first be characterized, then modeled mathematically, and finally. The existing Shuttle/TDRSS link simulation program Shuttle communications and tracking systems modeling and TDRSS link simulations studies book modified and refined to model the post-radio frequency interference TDRS hardware and to evaluate the performance degradation due to RFI effects.

The refined link models were then used to determine, evaluate and assess expected S-band and Ku-band link performance. Introduces an inter- and multi-modal transportation systems analysis, modeling and simulation based on the continuous-time, discrete-time, and mixed mode modeling and simulation paradigms; Presents research-oriented use cases from granted projects showing how to solve real-world transportation systems sector problems.

Solar Power Satellite antenna phase control system hardware simulation, phase 4. Volume 2: Analytical simulation of SPS system performance.

Shuttle-based compact systems are new automated multi-deep unit-load storage systems with lifts that promise both low operational cost and large volume flexibility. In this paper, we develop novel queuing network models to estimate the performance of both single-tier and multi-tier shuttle-based compact by:   This paper reports on a study of modelling a shuttle transportation system.

There were three objectives, the first was to consider alternative ways of modelling traffic streams approaching the shuttle system, the second to develop a simulation model using various parameters to help explain the behaviour of shuttle systems and the third was to conduct sensitivity studies to observe how such a Author: Haluk Bekiroglu, Keith L.

McRoberts. Shuttle Ku-Band Return Link Performance Study 5 Shuttle/TDRSS Ground Station Synchronfzation Performance 5 RFI Effects on Shuttle/TDRSS Links ESTL Hardware RFI Testing 2, LinCsim PREDICTIONS OF SHUTTLE/TDRSS RETURN LINK BER PERFORMANCE 10 Introduction 10 Performance Prediction for Shuttle S- Band Return Link   Some theoretical considerations about modeling and simulation (M&S) of SoSs appear in this chapter, including lexicon and taxonomy to describe or categorize different types of SoSs.

A discussion of some methodologies used for air transportation SoS follows the theoretical : William Crossley, Daniel DeLaurentis. The state of the art of this field is presented in a technically rigorous yet clear manner.

After introducing the fundamentals of modeling and the necessary mathematical background, the book surveys the most interesting simulation systems at the language and logic level, describing their use though a variety of case studies.

Topics and features:Brand: Dietmar P.F. Moller. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

TRANSMISSION LINE MODELING FOR REAL-TIME SIMULATIONS Maria Isabel Silva Lafaia Simões Instituto Superior Técnico Av. Rovisco Pais, Lisboa, Portugal Email: @ Abstract—Real-time simulation of power systems transients is an important tool when there is File Size: 1MB.

For developing multi-shuttle analytical models, presented in this paper, the same assumptions as for single-shuttle systems were considered. The assumptions and notation which are used in this research include the following, ().

The storage rack is considered to be a continuous rectangular pick face, where the I/O point is located at the lower left-hand corner of the storage by: Int j simul model 14 () 1, ISSN Original scientific paper.

Beth Kulick, Senior Analyst at TransSystems takes a comprehensive look at transportation simulation modeling.

Including Port of Long Beach Pier B. Category. Streamline your operations and reduce costs with Samsaras all-in-one platform for fleet management. Live-to-the-second GPS tracking shows your vehicles in real time and pairs with rich reports so you can plan better routes, dispatch drivers at the last minute, and share accurate ETAs with customers.

Human Space Vehicle Systems—Spacecraft Communications Communication Systems Simulation Laboratory (CSSL) The CSSL consists of state-of-the-art computer-aided design and analysis tools used to model and simulate the performance of both proposed and actual spacecraft communication systems, subsystems, components, and parts.

Shuttle Communication Systems Compatibility and Performance Testing Abstract: The Shuttle communications system consists of major space and ground elements. The space elements include the Orbiter, Tracking and Data Relay Satellite, payload and extravehicular astronaut communications Cited by: 3.

Trends of Transportation Simulation and Modeling Based on a Selection of Exploratory Advanced Research Projects: Workshop Summary Report 5 Report Date July 6 Performing Organization Code 7. Author(s) C.Y. David Yang and Tom Morton 8 Performing Organization Report No.

9 Performing Organization Name and Address Woodward Communications, Inc. Another COMSAT is the Tracking and Data Relay Satellite System (TDRSS). The TDRSS consists of nine active satellites and provides a simultaneous full-time cov-erage for the Space Shuttle and other NASA low-Earth-orbiting spacecraft.

This system relays data and communications between the satellites and Earth. NASA established a Deep Space Net-File Size: 2MB. TDRSS. Any model of space-to-space and space-to-ground communications links must know the positions of the endpoints in order to calculate light-time delays and simulate link errors, among other things.

Early versions of the communications and tracking simulation used tabulated TDRSS satellite positions from an input file. Call for papers for the Special Issue: Dynamic Transportation Network Modeling: Emerging Technologies, Data Analytics and Methodology Innovations Dynamic transportation network modeling is essential to understand the dynamics of vehicular/passenger flow and transportation system performance and to support decision making of system-level.

A simulation is an approximate imitation of the operation of a process or system; that represents its operation over time. Simulation is used in many contexts, such as simulation of technology for performance tuning or optimizing, safety engineering, testing, training, education, and videocomputer experiments are used to study simulation models.

This book studies the simulation of wireless networking in the domain of Intelligent Transportation Systems (ITS) involving aircraft, railway and vehicular communication. On this subject, particular focus is placed on effective communication channels, mobility modeling, multi-technology simulation and global ITS simulation frameworks.The TSSM begins with an introduction to transportation system simulation, walking users through the analytical benefits, requirements, and underpinnings of simulation.

The manual then helps users decide which traffic analysis model to use. Simulation might not always be the best option based on limitations and project stakeholder expectations.Shuttle-based compact systems are new automated multideep unit-load storage systems with lifts that can potentially achieve both low operational cost and large volume flexibility.

In this paper, we develop novel queuing network models to estimate the performance of both single-tier and multitier shuttle-based compact by: