Home
→
Browsing by Subject

Browsing by Subject "Antennas"

Now showing items 1-20 of 44

3D manufacturing using laser direct structuring and the application on the development of antenna systems

Friedrich, Aline (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

The development of radio systems is subject to constantly increasing demands. These concern the function to be implemented as well as the geometric dimensions of the RF devices in decreasing installation spaces. One resulting ...
Accuracy analysis of digital orthophotos from very high resolution imagery

Passini, Ricardo; Jacobsen, Karsten (Göttingen : Copernicus GmbH, 2004)

The generation of digital Orthophotos now days can be done with aerial, but also very high resolution space imagery. For a real competition the geometric and radiometric quality has to be on the same level. Different ...
Analysis of UAV-acquired wetland orthomosaics using GIS, computer vision, computational topology and deep learning

Kentsch, Sarah; Cabezas, Mariano; Tomhave, Luca; Groß, Jens; Burkhard, Benjamin; Caceres, Maximo Larry Lopez; Waki, Katsushi; Diez, Yago (Basel : MDPI AG, 2021)

Invasive blueberry species endanger the sensitive environment of wetlands and protection laws call for management measures. Therefore, methods are needed to identify blueberry bushes, locate them, and characterise their ...
Antenna de-embedding for on-body communications with wearables and implants

Berkelmann, Lukas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2022)

The particular challenge for modeling wearable and implantable wireless systems for on-body communications lies in the near-field coupling of the antenna and the dissipative tissue. Hence, so far, the antennas could not ...
Automated parametrical antenna modelling for ambient assisted living applications

Kazemzadeh, Reza; John, Werner; Mathis, Wolfgang (Göttingen : Copernicus GmbH, 2012)

In this paper a parametric modeling technique for a fast polynomial extraction of the physically relevant parameters of inductively coupled RFID/NFC (radio frequency identification/near field communication) antennas is ...
Automatic classification of aerial imagery for urban hydrological applications

Paul, A.; Yang, C.; Breitkopf, U.; Liu, Y.; Wang, Z.; Rottensteiner, F.; Wallner, M.; Verworn, A.; Heipke, C. (Göttingen : Copernicus GmbH, 2018)

In this paper we investigate the potential of automatic supervised classification for urban hydrological applications. In particular, we contribute to runoff simulations using hydrodynamic urban drainage models. In order ...
Automatic measurement of sewer man-holes in large scale aerial images

Pollak, Bernd; Jacobsen, Karsten ([Wechselnde Verlagsorte] : ISPRS, 2000)

The geometric changes of the surface (subsidence and horizontal displacement) caused by coal mining can be determined by photogrammetry with a sufficient accuracy. As long time stable targets sewer manholes can be used. ...
Characterisation of GNSS carrier phase data on a moving zero-baseline in urban and aerial navigation

Ruwisch, Fabian; Jain, Ankit; Schön, Steffen (Basel : MDPI AG, 2020)

We present analyses of Global Navigation Satellite System (GNSS) carrier phase observations in multiple kinematic scenarios for different receiver types. Multi-GNSS observations are recorded on high sensitivity and ...
Computation of antenna pattern correlation and MIMO performance by means of surface current distribution and spherical wave theory

Klemp, O.; Armbrecht, G.; Eul, H. (Göttingen : Copernicus GmbH, 2006)

In order to satisfy the stringent demand for an accurate prediction of MIMO channel capacity and diversity performance in wireless communications, more effective and suitable models that account for real antenna radiation ...
Considerations on radar localization in multi-target environments

Rabe, H.; Denicke, E.; Armbrecht, G.; Musch, T.; Rolfes, I. (Göttingen : Copernicus GmbH, 2009)

In a multitude of applications like e.g. in automotive radar systems a localization of multiple passive targets in the observed area is necessary. This contribution presents a robust approach based on trilateration to ...
Constructive and Destructive Processes During the 2018–2019 Eruption Episode at Shiveluch Volcano, Kamchatka, Studied From Satellite and Aerial Data

Shevchenko, Alina V.; Dvigalo, Viktor N.; Zorn, Edgar U.; Vassileva, Magdalena S.; Massimetti, Francesco; Walter, Thomas R.; Svirid, Ilya Yu.; Chirkov, Sergey A.; Ozerov, Alexey Yu.; Tsvetkov, Valefy A.; Borisov, Ilya A. (Lausanne : Frontiers Media, 2021)

Dome-building volcanoes often develop by intrusion and extrusion, recurrent destabilization and sector collapses, and renewed volcanic growth inside the collapse embayment. However, details of the structural architecture ...
The contribution of gis and remote sensing in urban land use negotiation in developing countries

Karanja, Faith; Lohmann, Peter ([Wechselnde Verlagsorte] : ISPRS, 2000)

Most of the studies related to urban environments in developing countries focus mainly on particular aspects e.g.communication, residential, vegetated areas, etc. However, planners who are concerned about urban space ...
Correlation properties of dual polarized antennas with finite pattern orthogonality in mobile fading channels

Armbrecht, G.; Klemp, O.; Rolfes, I. (Göttingen : Copernicus GmbH, 2007)

Starting from planar broadband log.-per. antenna design, offering the possibility of dual-polarized reception properties, in this article a generalized mathematical approach for rapidly estimating the resulting signal ...
Design of Sievenpiper HIS for use in planar broadband antennas by means of effective medium theory

Hampel, S.K.; Schmitz, O.; Klemp, O.; Eul, H. (Göttingen : Copernicus GmbH, 2007)

The claim for multistandard operating handsets of small physical size as well as the ever increasing demand for higher data rates require new broadband operating antennas. Because of the widespread use of especially planar ...
Detection of invasive species in Wetlands: Practical dl with heavily imbalanced data

Cabezas, Mariano; Kentsch, Sarah; Tomhave, Luca; Gross, Jens; Caceres, Maximo Larry Lopez; Diez, Yago (Basel : MDPI AG, 2020)

Deep Learning (DL) has become popular due to its ease of use and accuracy, with Transfer Learning (TL) effectively reducing the number of images needed to solve environmental problems. However, this approach has some ...
Determination of the input impedance of RFID transponder antennas with novel measurement procedure using a modified on-wafer-prober

Camp, M.; Herschmann, R.; Zelder, T.; Eul, H. (Göttingen : Copernicus GmbH, 2007)

This paper shows a new method to determine the input impedance of RFID transponder antennas with a combination of on-wafer-prober and network analyzer. It is shown that the results are in a good agreement with FEM simulations ...
Entwurfskonzept einer Car2Car-Multiband-Dachantenne

Wang, Yuanhao; Reit, Marco; Mathis, Wolfgang (Göttingen : Copernicus GmbH, 2012)

Due to the vastly increasing use of wireless services in the car, such as WiFi, Car2Car and LTE, the requirements on bandwidth and radiation pattern of the roof antenna systems become more challenging. In this work, a ...
Exploring ALS and DIM data for semantic segmentation using CNNs

Politz, F.; Sester, M. (Katlenburg-Lindau : Copernicus Publications, 2018)

Over the past years, the algorithms for dense image matching (DIM) to obtain point clouds from aerial images improved significantly. Consequently, DIM point clouds are now a good alternative to the established Airborne ...
Extended post processing for simulation results of FEM synthesized UHF-RFID transponder antennas

Herschmann, R.; Camp, M.; Eul, H. (Göttingen : Copernicus GmbH, 2007)

The computer aided design process of sophisticated UHF-RFID transponder antennas requires the application of reliable simulation software. This paper describes a Matlab implemented extension of the post processor capabilities ...
Fiber backscatter under increasing exposure to ionizing radiation

Rohr, Johann Max; Ast, Stefan; Gerberding, Oliver; Reiche, Jens; Heinzel, Gerhard (Washington, DC : OSA - The Optical Society, 2020)

The Laser Interferometer Space Antenna (LISA) will measure gravitational waves by utilizing inter-satellite laser links between three triangularly-arranged spacecraft in heliocentric orbits. Each spacecraft will house two ...

Now showing items 1-20 of 44

Submit new document to repository

Browse

All content
- Communities & Collections
- By Issue Date
- Authors
- Titles
- Subjects
- Subjects (GND)
- DDC
- License
- Type

My Account

Usage Statistics

of the Repository

Browsing by Subject "Antennas"

Browsing by Subject "Antennas"

Browse

All content

My Account

Usage Statistics