Jörg Friedrich Wagner

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• Prof. Dr.-Ing. habil.
• Professor at University of Stuttgart

During the last years integrated navigation systems based on gyros,accelerometers, and satellite navigation receivers became powerful,favourably priced devices for the guidance of aircraft and ships.Comparable equipment using especially wheel sensors exists for cars. Thekernel of such systems is a Kalman filter estimating the relevantvehicle motion...

The combination of inertial sensors and satellite navigation receivers like those of GPS (Global Positioning System) represents a very typical integrated navigation system. Integrated navigation is the most common example of integrated motion measurement determining the translational and angular position, velocity, and acceleration of a vehicle. Tr...

In 1965, the German Institute of Navigation founded the “Fachausschuss 8”, which was a committee with the task of bringing together scientists and users of gyro technology. From the beginning, the gatherings of this commission served to present and to discuss current research topics and typical applications of inertial systems. The first meeting to...

Das „Stratosphären-Observatorium für Infrarot-Astronomie“ (SOFIA) ist eine einzigartige, fliegende Sternwarte für die Beobachtung des Weltalls im infraroten Wellenlängenbereich. Den zentralen Teil des Observatoriums bildet ein Spiegelteleskop mit einem 2,7 m großen Hauptspiegel, das in einem offenen Schacht einer umgebauten Boeing 747SP untergebrac...

The satellite navigation system GPS has gradually gained a usability that was never expected during ist design 30 years ago. Similar statements can also be made for other central elements of modern navigation technology like gyroscopes and accelerometers as well as microprocessors for synchronizing and processing sensor signals. GPS receivers and o...

Over the last three decades, gyroscopes have become increasingly miniaturized and enabled the design of very small, light, and cost-effective inertial measurement units (IMUs). This allows new applications of inertial sensors. The motion measurement or motion capture of structures which, in contrast to classic inertial navigation, are no longer sin...

Eine Betrachtung der Arbeit von Walter Schröder als Ruderlehrexperte und Übungsleiterausbilder unter dem Aspekt der Biomechanik sowie Steuerungs- und Regelungsvorgängen. Die drei Ruderlehrweisen, orthodox, kybernetisch und natürlich, werden hierbei reflektiert, und das Erlernen der Ruderbewegung als komplexes kybernetisches System interpretiert.

Integrated Motion Measurement of flexible structures extends classical strapdown navigation with inertial sensors including conventional aiding techniques. The goal is to improve the navigation performance and to detect structural deformations during the navigation process for advanced motion measurement applications such as structural health monit...

The fundamental principle of integrated motion measurement (IMM) is integrated navigation with inertial sensors combined with, for example, a satellite navigation receiver. Accordingly, IMM makes use of the specific advantages of complementary sensors and blends them in a filter algorithm. To meet requirements in advanced motion measurements, for i...

In 2023, the 60th symposium of the conference series “Inertial Sensors and Applications” took place. During the preparation of the symposium, members of the programme committee suggested to complement the conference with a small exhibition to illustrate the history and tradition of the conference as well as the technical development of inertial sen...

The telescope structure of the Stratospheric Observatory for Infrared Astronomy (SOFIA) was subject to vibration excitation due to aircraft motions and airflow. To contribute to the efforts to meet pointing requirements and improve image stability, an active mass damping system for the primary mirror suspension has been designed and implemented dur...

Kurt Magnus (1912-2003) is one of the personalities who shaped research and teaching in applied mechanics during the 20th century. Through his work with his doctoral supervisor Max Schuler at the University of Göttingen, gyrodynamics became his most important field of work, which also led to his research in oscillations, multibody systems, and mech...

The year 2023 marks the 60th symposium “Inertial Sensors and Systems” (ISS) of the German Institute of Navigation (DGON). Having been originally founded as a national working group for presenting and discussing current research topics and typical applications of gyro technology, this series of annual conferences quickly obtained international inter...

Utilizing Micro-Electro-Mechanical-System (MEMS) Inertial-Measurement-Units (IMUs) for determining north is increasingly attractive due to their improving performance, availability, and low cost in comparison to, e.g., Fiber-Optic-Gyroscopes (FOGs). This option is particu-larly relevant for navigation applications employing less reliable north-find...

The Machine of Bohnenberger is the first gyro with cardanic suspension. It was invented at the University of Tübingen in 1810 by the Astronomer and Geodesist J.G.F. Bohnenberger. This apparatus served originally for illustrating the precession of the Earth rotation and was made especially popular by P.-S. Laplace and F. Arago in Paris. It was also...

During the last 10 to 15 years, pedestrian navigation based on zero velocity updates (ZUPT) has become very popular. One of the main reasons for this is the increasing availability of small, low-cost inertial measurement units. However, the processing of the data from these units for pedestrian navigation is almost exclusively based on algorithmic...

During the last 10 to 15 years, pedestrian navigation based on zero velocity updates (ZUPT) has become very popular. One of the main reasons for this is the increasing availability of small, low-cost inertial measurement units. However, the processing of the data from these units for pedestrian navigation is almost exclusively based on algorithmic...

MEMS IMUs are the most common units for data collection in the field of pedestrian inertial navigation, whereas on the data processing side a Kalman filter is a broadly used algorithm for the required pedestrian motion state estimation. The paper investigates the influence of several IMU-related parameters on the accuracy of this state estimation....

Zur Veranschaulichung der Wirkungsweise von Kreiselgeräten sowie für Forschungsarbeiten entstand ab 1961 am damaligen Institut für Mechanik (später Institut A für Mechanik) der Fakultät für Maschinenwesen der TH Stuttgart eine spezielle Instrumentensammlung. Sie wurde durch Prof. K. Magnus begründet, durch Prof. H. Sorg weitergeführt und befindet s...

Cultural heritage preservation via 3D digitization is becoming more and more important. Besides conventional buildings and landmarks, many technical instruments and artifacts, which belong to tech heritage (TH), are also of great importance, historically and didactically. Gyroscopes, which can be dated back for 200 years, are fascinating instrument...

Diese Vorlesung behandelt experimentelle Techniken, die im Bereich der Werkstoff- und Bauteilprüfung von Luft- und Raumfahrtkonstruktionen Anwendung finden. Zugleich soll auch eine Grundlage für die Versuchstechnik auf anderen Teildisziplinen geschaffen werden. Der angebotene Stoff ist, entsprechend der Vielfalt experimenteller Aufgaben und in Abst...

Die Vorlesungen Dynamik I und II dienen der Vertiefung des Teilgebiets Dynamik aus der Technischen Mechanik. Schwerpunkte des Teils Dynamik II sind die mathematische Behandlung von Modellen ungedämpfter Mehrkörpersysteme mit mehreren Freiheitsgraden, die Modellbildung und mathematische Behandlung schwingender Kontinua, und zwar besonders mit der Me...

In der Vorlesung Mechanische Systeme – Dynamik III werden einzelne Teilgebiete aus dem bisherigen Curriculum Dynamik I und II weiter vertieft. Ein wesentlicher Schwerpunkt der Veranstaltung ist dabei die Betrachtung der Dämpfungsmatrix in allgemeiner Form sowie weiterer, bisher nicht behandelter Bestandteile der linearen Schwingungsdifferentialglei...

Die Vorlesungen Dynamik I und II dienen der Vertiefung des Teilgebiets Dynamik aus der Technischen Mechanik. Schwerpunkte von Dynamik I sind dabei die Modellbildung für Mehr-körpersysteme, die Linearisierung der Bewegungsgleichungen sowie die Betrachtung von Schwingungen mit einem Freiheitsgrad: • Modellierung, Freiheitsgrade und Kinematik, • Prinz...

Die Vorlesung Tragwerksoptimierung behandelt die in der Luft- und Raumfahrttechnik sehr wichtige Teildisziplin der optimalen, d.h. bestmöglichen Gestaltung eines Entwurfs, und zwar speziell für die Fälle aus der Strukturmechanik. Optimierungskriterien betreffen dabei z.B. die Gewichts- oder Verformungsminimierung belasteter Bauteile, wobei Randbedi...

Ziele der Vorlesung: 1. Verstehen der wichtigsten theoretischen Grundlagen der Finite-Elemente-Methode. 2. Kennenlernen eindimensionaler Finiter Elemente (Zug-/Druckstab, Biegebalken). 3. Kennenlernen des Aufstellens einfacher Modelle aus eindimensionalen Finiten Elementen. 4. Verstehen der Nutzung von Koordinatentransformationen für Finite Elemen...

In this paper we propose a virtual control point based method for the registration of photogrammetry and computed tomography (CT) data. Because of the fundamentally different two data sources, conventional registration methods, such as manual control points registration or 3D local feature-based registration, are not suitable. The registration obje...

Zu den zentralen Elementen des kulturellen Erbes gehören technische Instrumente und Artefakte. Historisch und didaktisch aufgearbeitet erlauben sie Einsichten in Entwicklungen und Objekte, die die heutige Zivilisation weltweit prägen. Ziel von Gyrolog war es, in Gestalt der technischen Kreisel die unscheinbaren und doch hoch komplexen Objekte eine...

Data repository of the gyroscope collection situated at the University of Stuttgart. The data was collected within the Gyrolog Project (2017-2020) funded by the BMBF as a eHeritage digitisation task (funding no. 01UG1774X). The data repository is structured by Dataverses for each object located in the Stuttgart collection. Objects from affiliated...

The currently most widely used calibration method in geometric computer vision is based on Zhang’s method. This approach is easy to implement and delivers detailed result evaluations. One drawback, however, might be that the unexperienced user may obtain unstable and unrepeatable calibration results despite small re-projection errors. Therefore, th...

The preservation of cultural heritage assets of all kind is an important task for modern civilizations. This also includes tools and instruments that have been used in the previous decades and centuries. Along with the industrial revolution 200 years ago, mechanical and electrical technologies emerged, together with optical instruments. In the mean...

MICADO is the Multi-AO Imaging Camera for Deep Observations, a first light instrument for the Extremely Large Telescope (ELT). The instrument provides imaging, astrometric, spectroscopic and coronographic observing modes. MICADO will be assisted by a Single-Conjugate Adaptive Optics (SCAO) system and the Multi-conjugate Adaptive Optics RelaY (MAORY...

The preservation of cultural heritage assets of all kind is an important task for modern civilizations. This also includes tools and instruments that have been used in the previous decades and centuries. Along with the industrial revolution 200 years ago, mechanical and electrical technologies emerged, together with optical instruments. In the mean...

The Stratospheric Observatory for Infrared Astronomy (SOFIA) employs an airborne telescope with a 2.7m primary mirror. The telescope structure is composed of carbon fiber with major parts of steel for the suspension and balancing components. It is exposed to harsh environmental conditions and subject to vibration excitation due to aircraft motions...

Nowadays various methods and sensors are available for 3D reconstruction tasks; however, it is still necessary to integrate advantages of different technologies for optimizing the quality 3D models. Computed tomography (CT) is an imaging technique which takes a large number of radiographic measurements from different angles, in order to generate sl...

Die Zusammenarbeit zwischen Johann Gottlieb Friedrich Bohnenberger (1765 - 1831), Professor für Mathematik, Physik und Astronomie, und dem Instrumentenmacher Johann Wilhelm Gottlob Buzengeiger (1778 - 1836) ist ein interessantes Kapitel der Tübinger Universitätsgeschichte. Bohnenbergers wissenschaftliche Arbeit wäre ohne die Unterstützung Buzengeig...

The Multi Adaptive Optics Imaging Camera for Deep Observations (MICADO) is a first light instrument for the 39 m Extremely Large Telescope (ELT). The preliminary design of MICADO is based on a structural cryostat (2.1 m diameter and 2 m height) with part of a Wave Front Sensor (WFS) on top (cryostat + WFS ≈ 7.000 kg). The cryostat is mounted via it...

Gyro instruments represent a demanding technology, which became increasingly important during the 20 th century. Its significant influence on navigation and guidance of especially maritime and aerospace vehicles make them more and more interesting for historians of technology and museums. Furthermore, they form the essential background for understa...

In 2019, Helmut Sorg celebrated his 85th birthday. As he shaped the conference series “DGON (Deutsche Gesellschaft für Ortung und Navigation) Inertial Sensors and Systems”, previously known as “Symposium Gyro Technology”, for many years, this anniversary gives reason for honoring Helmut Sorg and dedicating to him this year’s proceedings.

Technical artefacts and instruments form an essential part of cultural heritage. If historically analysed and suitably explained, they provide insights into developments and objects that had and still have a significant influence upon our present civilization. Without any explanation and contextualization, however, these objects will remain stubbor...

Instruments for routing and navigation, such as gyroscopes of various designs, have been used to complement the Global Navigation Satellite Systems (GNSS) for more than three decades. Nowadays, Inertial Measurement Units (IMUs), also called Inertial Navigation Systems (INSs) can be used standalone or be integrated with GNSS and other sensors. For e...

Die Historie der Kreiseltechnik lässt sich in sechs Zeitabschnitte einteilen, vom schnell rotierenden Kegel als Spielzeug bis zum MEMS-Gyroskop als Massenprodukt. Das wissenschaftliche Werk von Kurt Magnus ist mit all diesen Epochen verbunden. An drei Beispielen wird vor diesem Hintergrund gezeigt, wie die wissenschaftliche Arbeit von Kurt Magnus b...

MICADO is the Multi-AO Imaging Camera for Deep Observations, a first light instrument for the Extremely Large Telescope (ELT). It will provide the ELT with diffraction limited imaging capacity over a ~53-arcsec field of view, while operating with the Multi-Conjugate Adaptive Optics (MCAO) module MAORY (0.8-2.5 μm). Here, we present the design statu...

The telescope structure of the Stratospheric Observatory for Infrared Astronomy (SOFIA) is subject to Vibration excitation due to aircraft motions and turbulence from the airflow coming into the telescope cavity. A proper understanding of the dynamical behavior of the telescope structure under operational loads is crucial for pointing control and m...

The Stratospheric Observatory for Infrared Astronomy (SOFIA) consists of a 2.7m infrared telescope integrated into a Boeing 747 SP. One of the most complex subsystems of the observatory is the secondary mirror assembly (SMA). This active steering mechanism is used for image stabilization and infrared chopping. Since its integration in 2002, the per...

The “Machine of Bohnenberger” is considered to be the first gyro with cardanic suspension. As this apparatus forms the precursor of Foucault’s Gyroscope of 1852, it rates as the ancestor of all gyroscopic instruments. Its inventor, Johann Gottlieb Friedrich Bohnenberger (1765-1831), was a professor of physics, mathematics, and astronomy at the Univ...

Inertial sensors are powerful motion measurement devices. They are well-known in vehicle guidance and enable a detailed capture of position, attitude, velocity, and acceleration. Due to modern technology, navigation systems based on these sensors became increasingly small, light, and inexpensive. So, they suggest themselves for motion analysis in s...

Inertialmesseinheiten (IMUs) aus Beschleunigungsmessern, Gyroskopen und Magnetometern sind wichtige Bewegungssensoren im Sport geworden. Möglich wurde dies durch die Mikrosystemtechnik, die solche Messgeber überaus klein, leicht und preisgünstig gemacht hat, so dass sie inzwischen zu den „Wearable Sensors“ gehören. Der technische Hintergrund solche...

Ideen für emmisionsarme Langstreckenflüge. Dokumentation der Berbliner Wettbewerbe 2013 und 2016. Albert Ludwig Berblinger hatte im Jahr 1811 die Vision, mit Hilfe seines Hängegleiters die Donau zu überqueren. Im Geiste Berblingers verfolgte die Stadt Ulm mit dem Berblinger Wettbewerben 2013 und 2016 das Ziel, Entwicklungen in der allgemeinen Luftf...

Classical applications of the Finite Element Method (FEM) in the aerospace industry use structural models to predict dynamical properties during all design and integration phases. During development, test results are used for the identification and updates of model parameters. In recent years, the availability of structures with electromechanical c...

The Multi-adaptive optics Imaging CAmera for Deep Observations (MICADO), a first light instrument for the 39 m Extremely Large Telescope (ELT), is being designed and optimized to work with Multi-Conjugate Adaptive Optics (MCAO). The current concept of the MICADO instrument consists of a structural cryostat (2.1 m diameter and 2 m height) with part...

The English version of this paper is published in: Gyroscopy and Navigation, vol. 9, no. 1 (January 2018), pp.1-18 ***** Инерциальные датчики являются эффективнейшими инструментами для измерения параметров движения. Они широко известны в транспортных приложениях и позволяют получать подробные данные о местоположении, ориентации, скорости и ускоре...

Basierend auf Titel, Abstract und Keywords von über 49.000 Beiträgen des Journal of Biomechanics, der ECSS-Tagungen und mehrerer Kongressreihen der Navigation seit 1968 wurde statistisch die Verbreitung von Inertialsensoren im Sport getrennt für die Sportwissenschaft und die Navigation nachverfolgt. Außerdem wurde eine Klassifizierung existierender...

The Multi-AO Imaging Camera for Deep Observations (MICADO), a first light instrument for the 39 m European Extremely Large Telescope (E-ELT), is being designed and optimized to work with the Multi-Conjugate Adaptive Optics (MCAO) module MAORY (0.8-2.5 μm). The current concept of the MICADO instrument consists of a structural cryostat (2.1 m diamete...

SOFIA has reached in the last two years its full operational capabilities and is producing now great science on typically three observing flights per week. The telescope is the backbone of the observatory and is working nearly perfectly. This may be the right time to have a look on the design history of the telescope and some of the major subsystem...

The Stratospheric Observatory for Infrared Astronomy (SOFIA) uses its compact and highly integrated Secondary Mirror Mechanism (SMM) to switch between target positions on the sky in a square wave pattern. This chopping motion excites eigenmodes of the mechanism structure, which limit controller and observatory performance. We present the setup and...

Für die quantitative Analyse der Gleichgewichts-Leistung ist eine gute, systematische messtechnische Erfassung der Bewegungsanteile, die für die jeweils betrachte Gleichgewichts-Aufgabe charakteristisch sind, erforderlich. Da es sich bei den betreffenden Bewegungen in der Regel um schnelle, räumlich ablaufende Vorgänge handelt, bietet es sich an, S...

Integrated navigation systems are powerful motion measurement devices. They are well established in vehicle guidance and allow a versatile determination of position, angular attitude, and velocities with high sampling rates and good accuracies. In former times such systems were large, heavy, and expensive. Modern technology, however, has led to sma...

Die Maschine von Bohnenberger gilt als erster Kreisel mit kardanischer Lagerung und bildet damit den Vorläufer von Foucaults Gyroskop sowie den danach entstandenen Kreiselgeräten zur Navigation, Vermessung und Fahrzeugstabilisierung. Der geschichtliche Hintergrund für diese Erfindung und für die anfängliche Verbreitung des Instruments konnte erst i...

Flexible structures with spatially distributed accelerometers are a central feature of the “experimental modal analysis” serving to characterize the vibration properties of elastic mechanical systems. In contrast to this frequency based offline procedure, real-time tasks like motion control or health monitoring of such structures typically rely lit...

In 1965, the German Institute of Navigation founded the “Fachausschuss 8”, which was a committee with the task of bringing together scientists and users of gyro technology. From the beginning, the gatherings of this commission served to present and to discuss current research topics and typical applications of inertial systems. The first meeting to...

LINC-NIRVANA (LN) is an advanced astronomical instrument that has been developed by a German-Italian consortium with the Max Planck Institute for Astronomy as leader (MPIA). It will be installed in 2016 at the Large Binocular Telescope (LBT), Arizona, USA. LN has high precision opto-mechanical components on top of its optical bench and is a huge in...

In 2004, a gyro with cardanic suspension was recovered in the physical collection of the Kepler-Gymnasium in Tübingen. Together with a second specimen meanwhile found, these instruments seem to be the only known original copies matching the first systematic description of such an apparatus. The author of this account from 1817 was J.G.F. Bohnenberg...

The Stratospheric Observatory for Infrared Astronomy SOFIA consists of a B747-SP aircraft, which carries aloft a 2.7-meter reflecting telescope. The image stability goal for SOFIA is 0.2 arc-seconds rms. The performance of the telescope structure is affected by elastic vibrations induced by aeroacoustic and suspension disturbances. Active compensat...

The original pointing accuracy requirement of the Stratospheric Observatory for Infrared Astronomy SOFIA was defined at the beginning of the program in the late 1980s as very challenging 0.2 arcsec rms. The early science flights of the observatory started in December 2010 and the observatory has reached in the mean time nearly 0.7 arcsec rms, which...

Johann Gottlieb Friedrich Bohnenberger (1765-1831) was a Professor of physics, mathematics, and astronomy at the University of Tübingen, Germany, as well as the scientific head surveying officer of the Kingdom of Württemberg. He made both major contributions to introducing modern geodesy in Germany and constructed various physical instruments. The...

Vibrations in large dynamic structures are often the source of undesired effects. Active compensation of such effects requires a fast way of estimating the structural motion. Integrated navigation systems (INS) are examples of such motion estimation systems used for vehicle guidance. However, they employ a rigid body assumption, which is only reaso...

Classical applications of the Finite Element Method (FEM) in the aerospace industry employ models of a structure throughout different design and integration phases. Finite Element models are used to predict structural and dynamical behavior during qualification and characterization tests, launch, and operation. During development, test results can...

Das Berblinger Jubiläumsjahr 2011 wurde mit einem internationalen Flugwettbewerb gefeiert. Das Preisgeld von 100.000 € wurde für umweltfreundliche und zugleich praxistaugliche Fluggeräte vergeben, die mit Blick auf Umweltverträglichkeit, Wirtschaftlichkeit, Sicherheit und/oder Bauweise besonders originell und innovativ konzipiert waren. Bereits im...

The Stratospheric Observatory for Infrared Astronomy SOFIA started in December 2010 with the first series of science flights, and has successfully completed about 38 science missions until fall 2011. The science instruments flown included HIPO, FORCAST, GREAT and FLITECAM. Beside their scientific results (see related papers in these proceedings) th...

Im Jahr 2004 wurde in der Physiksammlung des Kepler-Gymnasiums Tübingen ein kardanisch gelagerter Kreisel aufgefunden. Bis heute scheint dieses Instrument zusammen mit einem zweiten Exemplar, das inzwischen in einem Internetauktionshaus entdeckt wurde, das einzige Original zu sein, das explizit mit der ersten systematischen Beschreibung eines solch...

Johann Gottlieb Bohnenberger (1765-1831) was a Professor of physics, mathematics, and astronomy at the University of Tübingen, Germany, as well as the scientific head surveying officer of the Kingdom of Württemberg. He made not only significant contributions to introducing modern geodesy in Germany but also constructed various physical instruments....

In 2004, a gyro with cardanic suspension was recovered in the physical collection of a school in Tübingen, Germany. Up to now, this instrument seems to be the only original corresponding explicitly with the first systematic explanation of such an apparatus. This description dates back to 1817 and was written by the inventor J.G.F. Bohnenberger (176...

Willkommen zu „Orientierung im Raum – 200 Jahre Maschine von Bohnenberger“. Mit dieser Ausstellung möchten wir Ihnen die Erfindung eines kleinen Demonstrationsinstruments vorstellen, das im Lauf seiner späteren Rezeption neben seinem ursprünglichen Charakter als Vorführobjekt zu einem wichtigen Instrument der Navigation, Fahrzeugführung und Geodäsi...

Johann Gottlieb Bohnenberger (1765-1831) was a Professor of physics, mathematics, and astronomy at the University of Tübingen, Germany, as well as the scientific head surveying officer of the Kingdom of Württemberg. He made not only significant contributions to introducing modern geodesy in Germany but also constructed various physical instruments....

Die Maschine von Bohnenberger gilt als erster Kreisel mit kardanischer Lagerung und bildet damit den Vorläufer von Foucaults Gyroskop sowie den danach entstandenen Kreiselgeräten zur Navigation, Vermessung und Fahrzeugstabilisierung. Der geschichtliche Hintergrund für diese Erfindung und für die erste Verbreitung des Instruments war bis vor kurzem...

After 8 years of development, the telescope of the Stratospheric Observatory for Infrared Astronomy, SOFIA has been integrated into the aircraft and has just started with the first observation test flights. Due to its rather unique environment in the open port of a Boeing 747SP, the telescope optics of SOFIA is exposed to extreme aero-acoustic exci...

The NASA/DLR Stratospheric Observatory for Infrared Astronomy (SOFIA) employs a 2.5-meter reflector telescope in a Boeing 747SP. The telescope is housed in an open cavity and will be subjected to aeroacoustic and inertial disturbances. The image stability goal for SOFIA is 0.2 arc-seconds (RMS). Throughout the development phase of the project, anal...

SOFIA, das Stratosphären Observatorium für Infrarot-Astronomie, ist eine fliegende Sternwarte für die Beobachtung des Weltalls im infraroten Wellenlängenbereich, der von der Erde aus wegen dem Wasserdampf in der Atmosphäre nicht zugänglich ist. Es ist ein gemeinsames Projekt des DLR und der NASA, der Betrieb des Observatoriums wird durch das Scienc...

In navigation, instruments such as the directional gyroscope and artificial horizons with their rotors suspended in two gimbal rings are well known. It is now widely believed that the first device to show this kind of rotor support was an apparatus developed around 200 years ago at the University of Tübingen, Germany, by Prof. J.G.F. Bohnenberger....

Wir gehen davon aus, dass beim Bewegen-Lernen in einer Sportart keine Bewegungsmuster allein angeeignet, sondern dass das Bewältigen von komplexen, z. T. auch unbestimmten Situationen auf der Grundlage von bereits verfügbaren Erfahrungen optimiert wird. Innerhalb der jeweiligen funktionellen Anforderungen spielt die Regulation des dynamischen Syste...

Wir gehen davon aus, dass beim Bewegen-Lernen in einer Sportart keine Bewegungsmuster allein angeeignet, sondern dass das Bewältigen von komplexen, z. T. auch unbestimmten Situationen auf der Grundlage von bereits verfügbaren Erfahrungen optimiert wird. Innerhalb der jeweiligen funktionellen Anforderungen spielt die Regulation des dynamischen Syste...

Integrated navigation for vehicle guidance is a well-known application of integrated motion measurement systems. For this, the vehicle is modeled as a single rigid body with six degrees of freedom to be determined. Stability problems with these systems occur, but can be avoided by distributing sensors over the vehicle structure. However, in this ca...

SOFIA, the Stratospheric Observatory for Infrared Astronomy, is an airborne observatory that will study the universe in the infrared spectrum: A Boeing 747-SP aircraft carries a 2.5 m telescope designed to make sensitive infrared measurements of a wide range of astronomical objects. During science observations, three low-noise fiber optic gyroscope...

„Wenn von Braun der Kolumbus des 20. Jahrhunderts gewesen ist, dann war Ernst Stuhlinger sein Navigator und Vertrauter.“ Mit Worten wie diesen haben Freunde und ehemalige NASA-Kollegen Abschied von einem Wissenschaftler genommen, der zu den ganz großen Pionieren der Raumfahrt gehört. Ernst Stuhlinger, ehemaliger Wissenschaftsdirektor Wernher von Br...

Integrated motion measurement systems combine different sensor signals to estimate an unknown motion state. Hereof, integrated navigation devices for vehicle guidance are the most common example. They typically use signals from an inertial measurement unit (three accelerometers, three gyros) and a GPS receiver with a single antenna. Traditionally,...

Integrated navigation systems are typically a special case of integrated motion measurement systems. Up to now, such systems model the vehicle as a single rigid body reflecting mainly classical navigation requirements. However, this does not fix coercively the concept of integrated navigation. Furthermore, systems based on classical rigid body mode...

J.G.F. Bohnenberger (1765–1831) war Professor für Mathematik und Astronomie an der Universität Tübingen sowie wissenschaftlicher Leiter der Vermessung Württembergs. Neben den Grundlagen der Geodäsie befasste er sich auch mit der Konstruktion physikalischer Apparate. Die „Maschine von Bohnenberger“ gilt als Vorläufer von Foucaults um 1852 entwickelt...

Directional gyros and artificial horizons with their rotors suspended in two gimbals are well-known instruments in navigation. It is widely accepted that the first device showing already this kind of rotor support is an apparatus developed about 200 years ago at the University of Tubingen, Germany, by Prof. J.G.F. Bohnenberger. The original version...

Integrated navigation devices for vehicle guidance are the most common example of an integrated motion measurement system combining the signals from an inertial measurement unit (IMU consisting of three accelerometers and three gyros) and a GPS receiver with a single antenna. For this, the vehicle is traditionally assumed to be a single rigid body...

In order to test numerical models describing the dynamics of a wave excited vessel a laboratory model setup for investigating roll motions at zero or small forward speeds was designed. A position and attitude measurement system consisting of an inertial measurement unit and a stereo–camera using an extended Kalman–filter was developed. (© 2008 WILE...

Combining inertial sensors and GPS receivers has led to integrated navigation systems of a performance surpassing classical navigation requirements. Therefore, utilizing this technology for unconventional applications suggests itself. One candidate for such an extended use is structural health monitoring (SHM). In essence, integrated navigation sys...

Kein Zeitraum in der Menschheitsgeschichte wurde durch Natur- und Ingenieurwissenschaften mehr geprägt als das 20. Jahrhundert. Diese Feststellung gilt dabei keineswegs nur für die allzu ersichtlichen technischen Veränderungen, sondern ebenso für die weltweiten, nachhaltigen gesellschaftlichen Umwälzungen. Auf der Suche nach den wissenschaftlichen...

Integrated navigation, as an example of integrated motion measurement systems, is typically based on inertial sensors (accelerometers, gyros) and GPS and is commonly used for vehicle guidance. Traditionally, the vehicle of integrated navigation systems is assumed to be a rigid body. However, extending these integrated systems to elas-tic structures...

Integrated navigation systems like a combination of a GPS receiver with accelerometers and gyros are powerful motion measurement devices, too. They are well established in vehicle guidance and allow a versatile determination of vehicle position and angular attitude including the respective velocities with high sampling rates and good accuracies. Wh...

Die Sensoren in Inertial Measurement Units (IMU) weisen Lagefehler auf. Werden diese Lagefehler nicht identifiziert und rechnerisch kompensiert, können erhebliche systematische Messfehler entstehen. Im vorliegenden Beitrag werden die Kompensationsgleichung sowie die erforderliche Genauigkeit bei der Identifikation der Lagefehler hergeleitet. (© 200...

Validation of numerical methods for describing the motion of a ship in sea conditions by adequate experiments is a major research field in ocean engineering. For the development of a method for the systematic determination of critical and safe operational conditions and for the classification of capsize scenarios bifurcation analyses are performed....

Integrated navigation systems based on gyros and accelerometers are well established devices for vehicle guidance. The system design is traditionally based on the assumption that the vehicle is a rigid body. However, generalizing such integrated systems to flexible structures is possible. The example of the motion of a simple beam being considered...

This article discusses the possibility of integrating a high altitude platform (HAP) as a pseudolite into satellite navigation systems to improve the system visibility and accuracy in urban areas. The high altitude platform will be considered stationary at a height of 20 km above ground and operates as an additional satellite to either GPS, Galileo...

Integrated navigation systems based on inertial sensors and GPS are well-established devices for vehicle guidance. The system design is traditionally based on the assumption that the vehicle is a rigid body. However, generalizing such integrated systems to rigid multibody or even more to flexible structures is possible. It is based on distributed s...