Jena Optronik GmbH

Jena, Germany

Jena Optronik GmbH

Jena, Germany
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Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC5-16-2014 | Award Amount: 4.98M | Year: 2015

The objective of the project SWOS is to develop a monitoring and information service focussing on wetland ecosystems. Globally wetlands are the ecosystems with the highest rate of loss. This is alarming, considering their significance as biodiversity hotspots and ecosystems with a central role in the water cycle, including improving water quality and reducing water scarcity, in climate regulation and the economic benefit gained from using their services. A key limitation to their more effective conservation, sustainable management and restoration is the missing knowledge underpinning the application of European policy by Member States. Under the Biodiversity Strategy, Member States have recently committed to the mapping and assessment of ecosystem services (MAES); this provides a key instrument for an improved integration of wetlands in policy. SWOS will take full advantage of the Sentinel satellites and integrate results from the ESA Globwetland projects. Status maps and indicators, as well as near real-time observations will allow the assessment of biodiversity and the monitoring of dynamic changes in an unmatched temporal and spatial resolution. The Service Portal will allow the integration and web-based analysis of new maps and in-situ measurements and provide a unique entry point to locate, access and connect existing information and databases. It follows a GEOSS compatible data-broker approach and adopts international standards. SWOS contributes to establishing a Global Wetland Observing System, as requested by Ramsar, it will facilitate local and EU monitoring tasks and input into international reporting obligations. SWOS will position Europe in a leading role for wetland activities within the GEO ecosystem, biodiversity, water, land cover tasks. The direct involvement of users working at different scales and support of key user organizations ensures the usability and acceptance of the service, the harmonization with related activities and a long-term impact.

Strietzel R.,Jena Optronik GmbH
European Control Conference, ECC 1999 - Conference Proceedings | Year: 2015

For the docking of spacecrafts a highly precise attitude and position control is necessary. This supposes an adequate measurement of the relative position and attitude of the docking spacecrafts. Here is presented, how a CCD camera can be used to measure the necessary data. Laser light coming from the direction of the camera illuminates a special target of retroreflectors. The reflected light produces light dots on the CCD plane of the camera. Their locations are used to calculate the values of relative position and attitude in a direct method. Essentially the accuracy of the position and attitude data depends on the measurement of the light points on the CCD. The obtained algorithm for the determination of position and attitude and the influences on the attainable accuracy are discussed and the results presented. © 1999 EUCA.

Wolf B.,Jena Optronik GmbH
2011 GEOSS Workshop XLI: Global Hydrology Interoperability and Field Applications, GEOSS XLI | Year: 2011

The primary objective of GlobWetland II is to facilitate the integration of remote sensing into the conservation and management of wetlands The GlobWetland II project contributes to the set up of a Global Wetlands Observing System (G-WOS) as per the strategy 1.2 of the Ramsar Strategic Plan 2009-2015 adopted at last Conference of the Parties, in Changwon, South Korea. Creation of standard and comparable geo-information products (principally based on EO technologies) from country to country about the status and trends in wetlands ecological character; Creation of a common framework/ infrastructure and methods based on remote sensing for harmonizing the implementation and reporting to the Ramsar Convention; © 2011 IEEE.

Pradarutti B.,University of Kaiserslautern | Pradarutti B.,Jena Optronik GmbH | Torosyan G.,Fraunhofer Institute for Physical Measurement Techniques | Theuer M.,University of Kaiserslautern | And 3 more authors.
Applied Physics Letters | Year: 2010

The transmission properties of broadband terahertz radiation through one-dimensional periodic metallic structures are investigated experimentally, and the obtained results are explained theoretically. Characteristic minima known as Wood's anomalies are observed in the transmission spectra. The measured line shapes, the so-called Fano profiles, are caused by the coupling between resonant surface plasmons excited on the metallic grating and nonresonant diffraction orders. Numerical simulations using classical electrodynamics are in good agreement with the experiments. © 2010 American Institute of Physics.

Strietzel R.,Wolfssteinweg 1 D | Michel K.,Jena Optronik GmbH
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2013

Star sensor systems are used, to increase the accuracy of attitude measurement and to enhance the reliability of the measurement system. For obtaining the output signal of the sensor system a data fusion of the measurements of the system components is necessary. Three fusion levels with different characteristics are proposed. The applied fusion level depends on the system structure and the redundancy concepts. Simulation results of the various possibilities are presented. © IFAC.

Mobius B.,Jena Optronik GmbH | Cavrois B.,Airbus | Mongrard O.,European Space Agency
Advances in the Astronautical Sciences | Year: 2016

The flight of the European supply vessel ATV-5 "Georges Lemaître" to the International Space Station included a demonstrator for a new set of optical sensors for non-cooperative rendezvous and docking, called "LIRIS" (Laser Infra- Red Imaging Sensors). As part of this project, a prototype for a new 3D Imaging LIDAR was developed, integrated and tested by Jena-Optronik for Airbus Defence and Space and ESA. This LIRIS LIDAR was based on technology from the DLR project "LiQuaRD" (LIDAR Qualification for Rendezvous and Docking) and allowed for the recording of high-resolution 3D images during the approach of ATV to the ISS. We will describe the design approach, properties and advantages of the LIRIS-2 sensor as well as the types of data returned by the sensor.

Jena Optronik GmbH | Date: 2013-01-10

A method for increasing the reliability of sensor systems for determining the position of flying objects. Since the position determination is very decisive for the execution of planned missions, it is especially important to increase the reliability of such systems. The star sensors of the star systems are preferably structured identically and connected to each other by a bidirectional bus system. Due to the presence of several identical modules in the sensor system, there is an inner redundancy that can be utilized via the bus system. The bus system allows the transmission of signals of different data processing levels, so that the transmission of the data of the data processing levels can be adapted to modules that may have failed.

Jena Optronik GmbH | Date: 2011-05-20

A camera (1), in particular in a space vehicle, having a housing (2) which contains at least one optically sensitive exposure surface (7), and a base lens (9), having a first fixed focal length, connected thereto in each case, and which projects on the at least one exposure surface (7) and which is situated on a first optical axis (10) for the exposure surface (7). To provide the camera with various fields of view, in particular for the approach of two satellites toward one another over large distances, at least two afocal supplementary lenses (11, 12) which are each parallel with respect to their optical axes (15, 16) and spaced at a distance from the first optical axis (10) are situated in the housing (2), whose optical paths are alternately coupleable with the aid of a pivotable prism (17), to form further fixed focal lengths in an optical path of the base lens (9).

Jena Optronik GmbH | Date: 2014-08-07

A hybrid network of kinematic sensors of an AOCS, made up of a star sensor including an optical camera head, and a processing unit provided as the central master processing unit, and additional kinematic sensors, each made up of a sensor element and a processing unit connected to the central processing unit via a first bus. An additional processing unit is equivalent to the processing unit and is a redundant central processing unit. The central processing units andare connected via an additional bus of a spacecraft provided with the hybrid network with the aid of a central computer. The particular active central processing units-provide all kinematic sensors with a uniform time pulse via a synchronization line, and supply the central computer with hybridized kinematic measuring data formed according to a method for hybridization based on the synchronous kinematic measuring data of the star sensor and the measuring data of the other sensors.

A method for the automatic correction of alignment errors in individual star trackers (R, S) of star tracker systems (1) is provided. The correction of orientation errors is necessary whenever it is not possible to mount the star trackers of the star tracker system on a shared stable block of a platform. Orientation errors can arise due to installation deviations and deformation of the platform, for instance, caused by mechanical loads or temperature fluctuations. A star tracker (R) that is attached in a very stable manner to the platform serves as the reference tracker. The orientation that it measures constitutes the reference information. An error signal and an orientation matrix are derived from the measured orientation of the other star trackers, thereby effectuating the correction of the coordinate systems of the star trackers that are to be corrected, and thus of their measured quantities. The resulting orientation as the starting quantity of the star tracker system is then calculated on the basis of the orientation information of the reference tracker and of the other star trackers. The linking of the measured results of the individual star trackers can take place on the level of the star vectors of a star catalog, on the level of preprocessed tracker signals or on the level of the quaternions and/or on the level Euler angles.

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