Download or read book Design Development and Testing of the Command and Data Handling Subsystem for Microsatellite Missions written by Ji Eun (Christine) Lee and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A spacecraft is composed of multiple subsystems that work together to accomplish the mission objectives. One of the most vital subsystems is termed the "brain" of the spacecraft, more formally known as the command and data handling subsystem, which is responsible for commanding all other subsystems and managing all data sent and received by the spacecraft. This thesis describes the author's contributions to the various aspects of the command and data handling subsystem for two microsatellite missions, with focus on work that can be extended for use and implemented on future space missions at the Space Flight Laboratory. Particular emphasis is given to the author's work on design of a new serial interface board, optimization of both ground and satellite software related to payload data handling, and development of various application threads on satellite on-board computers and ground control interfaces.

Download or read book Design Analysis and Testing of the NorSat 3 Microsatellite Mission Communications Subsystem written by Massimo Mancini and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NorSat-3 microsatellite will use a combination of Automatic Identification System data and civilian navigation radar to track cooperative and non-cooperative maritime targets. NorSat-3 leverages a Space Flight Laboratory designed and built spacecraft bus, and extends the performance provided by the communications subsystem offered on previous missions. A design for the communications subsystem is proposed which maximizes the use of heritage components, consisting of an uplink system, high speed uplink system, and downlink system. Spacecraft antennas are positioned to optimize performance for all payload and bus antennas during the navigation radar detector payload operations. Analyses and testing performed on this design prove that the links meet requirements on link margin, data throughput, gain coverage, and incident power. The implementation of this design on NorSat-3 will demonstrate the capabilities of microsatellites and improve upon the spacecraft bus design.

Download or read book A Reusable Command and Data Handling System for University CubeSat Missions written by Shaina Ashley Mattu Johl and published by . This book was released on 2013 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Command and Data Handling (C&DH) system is being developed as part of a series of CubeSat missions being built at The University of Texas at Austin's Texas Spacecraft Laboratory (TSL). With concurrent development of four missions, and with more missions planned for the future, the C&DH team is developing a system architecture that can support many mission requirements. The presented research aims to establish itself as a reference for the development of the C&DH system architecture so that it can be reused for future university missions. The C&DH system is designed using a centralized architecture with one main flight computer controlling the actions and the state of the satellite. A Commercial Off-The-Shelf (COTS) system-on-module embedded computer running a Linux environment hosted on a custom interface board is used as the platform for the mission software. This design choice and the implementation details of the flight software are described in detail in this report. The design of the flight software and the associated hardware are integral components of the spacecraft for the current missions in the TSL which, when flown, will be some of the most operationally complex CubeSat missions attempted to date.

Download or read book Communication Subsystems for Satellite Design written by Hung H. Nguyen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this chapter is to provide a comprehensive end-to-end overview of existing communication subsystems residing on both the satellite bus and payloads. These subsystems include command and mission data handling, telemetry and tracking, and the antenna payloads for both command, telemetry and mission data. The function of each subsystem and the relationships to the others will be described in detail. In addition, the recent application of software defined radio (SDR) to advanced satellite communication system design will be looked at with applications to satellite development, and the impacts on how SDR will affect future satellite missions are briefly discussed.

Download or read book Development of a Testbed for Distributed Satellite Command and Control written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the Air Force Research Laboratory's Space Vehicles Directorate we are investigating and developing architectures for commanding and controlling a cluster of cooperating satellites through prototype development for the TechSat-21 program. The objective of this paper is to describe a distributed satellite testbed that is currently under development and to summarize near term prototypes being implemented for cluster command and control. To design, develop, and test our architecture we are using eight PowerPC 750 VME-based single board computers, representing eight satellites. Each of these computers is hosting the OSE(TM) real-time operating system from Enea Systems. At the core of our on-board cluster manager is ObjectAgent. ObjectAgent is an agent-based object-oriented framework for flight systems, which is particularly suitable for distributed applications. In order to handle communication with the ground as well as to assist with the cluster management we are using the Spacecraft Command Language (SCL). SCL is also at the centerpiece of our ground control station and handles cluster commanding, telemetry decommutation, state-of-health monitoring, and Fault Detection, Isolation, and Resolution (FDIR). For planning and scheduling activities we are currently using ASPEN from NASA/JPL. This paper will describe each of the above components in detail and then present the prototypes being implemented.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Role of Small Satellites in NASA and NOAA Earth Observation Programs written by National Research Council and published by National Academies Press. This book was released on 2000-05-12 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote observations of Earth from space serve an extraordinarily broad range of purposes, resulting in extraordinary demands on those at the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), and elsewhere who must decide how to execute them. In research, Earth observations promise large volumes of data to a variety of disciplines with differing needs for measurement type, simultaneity, continuity, and long-term instrument stability. Operational needs, such as weather forecasting, add a distinct set of requirements for continual and highly reliable monitoring of global conditions. The Role of Small Satellites in NASA and NOAA Earth Observation Programs confronts these diverse requirements and assesses how they might be met by small satellites. In the past, the preferred architecture for most NASA and NOAA missions was a single large spacecraft platform containing a sophisticated suite of instruments. But the recognition in other areas of space research that cost-effectiveness, flexibility, and robustness may be enhanced by using small spacecraft has raised questions about this philosophy of Earth observation. For example, NASA has already abandoned its original plan for a follow-on series of major platforms in its Earth Observing System. This study finds that small spacecraft can play an important role in Earth observation programs, providing to this field some of the expected benefits that are normally associated with such programs, such as rapid development and lower individual mission cost. It also identifies some of the programmatic and technical challenges associated with a mission composed of small spacecraft, as well as reasons why more traditional, larger platforms might still be preferred. The reasonable conclusion is that a systems-level examination is required to determine the optimum architecture for a given scientific and/or operational objective. The implied new challenge is for NASA and NOAA to find intra- and interagency planning mechanisms that can achieve the most appropriate and cost-effective balance among their various requirements.

Download or read book CubeSat Handbook written by Chantal Cappelletti and published by Academic Press. This book was released on 2020-09-25 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: CubeSat Handbook: From Mission Design to Operations is the first book solely devoted to the design, manufacturing, and in-orbit operations of CubeSats. Beginning with an historical overview from CubeSat co-inventors Robert Twiggs and Jordi Puig-Suari, the book is divided into 6 parts with contributions from international experts in the area of small satellites and CubeSats. It covers topics such as standard interfaces, on-board & ground software, industry standards in terms of control algorithms and sub-systems, systems engineering, standards for AITV (assembly, integration, testing and validation) activities, and launch regulations. This comprehensive resource provides all the information needed for engineers and developers in industry and academia to successfully design and launch a CubeSat mission. Provides an overview on all aspects that a CubeSat developer needs to analyze during mission design and its realization Features practical examples on how to design and deal with possible issues during a CubeSat mission Covers new developments and technologies, including ThinSats and PocketQubeSats

Download or read book The FLP Microsatellite Platform written by Jens Eickhoff and published by Springer. This book was released on 2019-03-27 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the Flight Operations Manual for a reusable microsatellite platform – the “Future Low-cost Platform” (FLP), developed at the University of Stuttgart, Germany. It provides a basic insight on the onboard software functions, the core data handling system and on the power, communications, attitude control and thermal subsystem of the platform. Onboard failure detection, isolation and recovery functions are treated in detail. The platform is suited for satellites in the 50-150 kg class and is baseline of the microsatellite “Flying Laptop” from the University. The book covers the essential information for ground operators to controls an FLP-based satellite applying international command and control standards (CCSDS and ECSS PUS). Furthermore it provides an overview on the Flight Control Center in Stuttgart and on the link to the German Space Agency DLR Ground Station which is used for early mission phases. Flight procedure and mission planning chapters complement the book.

Download or read book Smaller Satellites Bigger Business written by Michael J Rycroft and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Y. Fujimori, Symposium Programme Committee Chair, and Faculty Member, International Space University e-mail: [email protected] M.Rycroft, Faculty Member, International Space University e-mail: [email protected] N. Crosby, International Space University e-mail: [email protected] For the sixth annual ISU Symposium the theme was "Smaller Satellites: Bigger Business? Concepts, Applications and Markets for Micro/Nanosatellites in a New Information World". Thus, the Symposium addressed the crucial question: are small satellites the saviour of space programmes around the world It did this from the unique perspective of the International Space today? University - the interdisciplinary, international and intercultural perspective. This Symposium brought together a variety of people working on small satellites - engineers, scientists, planners, providers, operators, policy makers and business executives, together with representatives from regulatory bodies, from national and international organizations, and from the finance sector, and also entrepreneurs. Discussion and debate were encouraged, based on the papers presented and those published here.

Download or read book Reliable Design of Micro satellite Systems Using Combined Physics of Failure Reliability Estimation Models written by Cass Adam Hussmann and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Up until 2015 the rate at which cube satellite missions achieved full mission successwas only 44.1% for any organizations rst mission (academic or corporate), the successrate increases to only 62% for cube satellites launched as a second mission. Thisthesis suggests that there are two main sources for the high failure rate: improperveri cation, and the common use of COTS components and their reliability in aspace environment. The thesis provides a means of increasing mission assurancethrough the use of physics of failure reliability estimation models that incorporatethe intrinsic and extrinsic failures of thermal mechanical e ects as well as radiatione ects on EEE components, a design methodology is also presented that incorporatesreliability modeling as well as thorough software and hardware in loop testing toprevent failure due to improper veri cation. The environment and reliability modelsare calculated for the on board command and data handling system of the ECOSat-II cube satellite being developed by the University of Victoria ECOSat team usingNX Siemens for thermal FEA modelling, SPENVIS for radiation environment, andMATLAB for reliability calculation.

Download or read book Design Analysis Assembly Integration and Testing of Mechanical Systems for Micro Satellites and Micro satellite Separation Systems written by Jamie Fine and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Subsystem Development for the CanX 7 Nanosatellite the NEMO HD Microsatellite and the XPOD Mass Dummy written by Chi-Jen John Chung and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Onboard Computers Onboard Software and Satellite Operations written by Jens Eickhoff and published by Springer Science & Business Media. This book was released on 2011-11-16 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as a system engineer's compendium, explaining the dependencies and technical interactions between the onboard computer hardware, the onboard software and the spacecraft operations from ground. After a brief introduction on the subsequent development in all three fields over the spacecraft engineering phases each of the main topis is treated in depth in a separate part. The features of today’s onboard computers are explained at hand of their historic evolution over the decades from the early days of spaceflight up to today. Latest system-on-chip processor architectures are treated as well as all onboard computer major components. After the onboard computer hardware the corresponding software is treated in a separate part. Both the software static architecture as well as the dynamic architecture are covered, and development technologies as well as software verification approaches are included. Following these two parts on the onboard architecture, the last part covers the concepts of spacecraft operations from ground. This includes the nominal operations concepts, the redundancy concept and the topic of failure detection, isolation and recovery. The baseline examples in the book are taken from the domain of satellites and deep space probes. The principles and many cited standards on spacecraft commanding, hardware and software however also apply to other space applications like launchers. The book is equally applicable for students as well for system engineers in space industry.

Download or read book Spacecraft Systems Engineering written by Peter Fortescue and published by Wiley. This book was released on 2003 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following on from the hugely successful previous editions, the third edition of Spacecraft Systems Engineering incorporates the most recent technological advances in spacecraft and satellite engineering. With emphasis on recent developments in space activities, this new edition has been completely revised. Every chapter has been updated and rewritten by an expert engineer in the field, with emphasis on the bus rather than the payload. Encompassing the fundamentals of spacecraft engineering, the book begins with front-end system-level issues, such as environment, mission analysis and system engineering, and progresses to a detailed examination of subsystem elements which represent the core of spacecraft design - mechanical, electrical, propulsion, thermal, control etc. This quantitative treatment is supplemented by an appreciation of the interactions between the elements, which deeply influence the process of spacecraft systems design. In particular the revised text includes * A new chapter on small satellites engineering and applications which has been contributed by two internationally-recognised experts, with insights into small satellite systems engineering. * Additions to the mission analysis chapter, treating issues of aero-manouevring, constellation design and small body missions. In summary, this is an outstanding textbook for aerospace engineering and design students, and offers essential reading for spacecraft engineers, designers and research scientists. The comprehensive approach provides an invaluable resource to spacecraft manufacturers and agencies across the world.

Download or read book Observation of the Earth and its Environment written by Herbert J. Kramer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following listing represents a survey and a short description of 'Earth Observing Mis sions' in alphabetical order. The listing in Part A considers completed-, operational-as well as planned missions on an international scale (Earth observations from space know no na tional boundaries). A look into past activities is important for reasons of heritage, context and of perspective. The document is intended for all who want to keep track of missions and sensors in the fast -growing field of Earth observations. There cannot be any claim to com pleteness, although a considerable effort was made to collect and integrate all known mis sions and sensors into this book. Earth observation by remote sensing changes our view and perception of the world. We be gin to realize the global character of remote sensing, its multidimensional and complemen tary nature, its vast potential to many disciplines, its importance to mankind as a whole. Re mote sensing permits for the first time in history a total system view of the Earth. The view from space toward Earth has brought about sweeping revisions in the Earth sciences, in par ticular in such fields as meteorology, oceanology, hydrology, geology, geography, forestry, agriculture, geodynamics, solar-terrestrial interactions, and many others.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt: