Concept and design of a UAS-based platform for measurements of RF signal-in-space
Thorsten Schrader
CORRESPONDING AUTHOR
Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
Jochen Bredemeyer
FCS Flight Calibration Services GmbH, Braunschweig, Germany
Marius Mihalachi
Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
Jan Rohde
Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
Thomas Kleine-Ostmann
Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
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David Ulm, Thomas Kleine-Ostmann, and Thorsten Schrader
Adv. Radio Sci., 17, 35–44, https://doi.org/10.5194/ars-17-35-2019, https://doi.org/10.5194/ars-17-35-2019, 2019
Short summary
Short summary
In an intercomparison organized within the framework of the German Calibration Service (Deutscher Kalibrierdienst – DKD), seven different calibration laboratories participated in the measurement of the antenna factor for three different antennas according to different standards. Between August 2017 and April 2018, measurements have been performed on a hybrid antenna, a logarithmic-periodic antenna and on an Open Ended Waveguide.
Kai Baaske, Thomas Kleine-Ostmann, and Thorsten Schrader
Adv. Radio Sci., 17, 45–49, https://doi.org/10.5194/ars-17-45-2019, https://doi.org/10.5194/ars-17-45-2019, 2019
Short summary
Short summary
An intercomparison in the framework of the German Calibration Service (Deutscher Kalibrierdienst – DKD) was carried out. Two different travelling standards were used to measure the rise time of a pulse generator and the rise time, bandwidth and attenuation of an oscilloscope. Fourteen participants performed the measurements from September 2015 until May 2016. The overall results show that the measurements of the participating laboratories are in good agagreement with the reference values.
Thorsten Schrader, Jochen Bredemeyer, Marius Mihalachi, David Ulm, Thomas Kleine-Ostmann, Christoph Stupperich, Sergei Sandmann, and Heyno Garbe
Adv. Radio Sci., 17, 1–10, https://doi.org/10.5194/ars-17-1-2019, https://doi.org/10.5194/ars-17-1-2019, 2019
Short summary
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To investigate the possible interference of wind turbines with terrestrial navigation aids and Radar systems, the signals of these systems have to measured in the air space used by aircrafts or being under surveillance, respectively. From the measurements performed in areas with and without wind turbines the influence of these on the signals of terrestrial navigation and/or Radars can be derived. Drone-based and state-of-the-art electronics were used for the measurements.
Reiner Pape, Uwe Karsten, Frank-Michael Lindner, Frank Rittmann, Joachim von Freeden, Thomas Kleine-Ostmann, and Thorsten Schrader
Adv. Radio Sci., 15, 243–248, https://doi.org/10.5194/ars-15-243-2017, https://doi.org/10.5194/ars-15-243-2017, 2017
Short summary
Short summary
We discuss the results of an intercomparison for electric field strength measurements within the DKD. The comparison has been carried out on the field strength value required to reach a display reading of 20 V m−1 of the field probes. While the results agree well for the small field probe and when the larger commercial 3-axis field probe is oriented in the direction of the magnetic field, larger deviations occur, when the larger 3-axis field probe is oriented into the direction propagation.
Martina Rohland, Kai Baaske, Katharina Gläser, Henning Hintzsche, Helga Stopper, Thomas Kleine-Ostmann, and Thorsten Schrader
Adv. Radio Sci., 15, 207–213, https://doi.org/10.5194/ars-15-207-2017, https://doi.org/10.5194/ars-15-207-2017, 2017
Short summary
Short summary
We describe the design of an exposure setup used to study possible non-thermal effects due to the exposure of human hematopoietic stem cells to GSM, UMTS and LTE mobile communication signals. The experiments are performed under fully blinded conditions in a TEM waveguide located inside an incubator to achieve defined environmental conditions as required for the living cells.
Thomas Kleine-Ostmann, Frank Huncke, Dieter Schwarzbeck, Otto Martetschläger, Jürgen Gaßner, Andreas Guserle, Christian Römer, Thomas Hufnagel, Mario Lehmann, Uwe Karsten, and Thorsten Schrader
Adv. Radio Sci., 14, 11–16, https://doi.org/10.5194/ars-14-11-2016, https://doi.org/10.5194/ars-14-11-2016, 2016
Short summary
Short summary
In this paper we discuss the results of an intercomparison for free space antenna factor measurements. Three different types of antennas covering the frequency range from 30 MHz to 26.5 GHz have been calibrated in five different laboratories using different methods and calibration sites. The results agree well within the uncertainties specified by the laboratories suggesting that different approaches and different measurement sites to obtain the free space antenna factor are well compatible.
Cited articles
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Mihalachi, M., Schrader, T., Rohde, J., and Kleine-Ostmann, T.: UAV-Based Measurement Platform for Precision Electromagnetic Field Measurements, 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), WS14 Unmanned Aircraft Systems – EMC and Applications, Dresden, Germany, 16–22 August, 2015.
Morgan-Owen, G. J. and Johnston, G. T.: Differential GPS positioning, Electron. Commun. Eng., 7, 11–21, 1995.
NovAtel: Positioning Modes of Operation, Application Note, Rev. 1, http://www.novatel.com/assets/Documents/Bulletins/apn051.pdf, 24 October 2013.
Pozar, D. M.: Radio Receiver Architectures, in: Microwave Engineering, 3rd Edn., John Wiley & Sons Inc., 2005.
Schrader, T., Bredemeyer, J., Stupperich, C., and Garbe, H.: WERAN – Interaction of Wind Turbines with Terrestrial Navigation/Radar Systems, 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), WS14 Unmanned Aircraft Systems – EMC and Applications, Dresden, Germany, 16–22 August, 2015.
Shao, M. and Sui, X.: Study on Differential GPS Positioning Methods, 2015 International Conference on Computer Science and Mechanical Automation (CSMA), 23–25 October 2015, 223–225, 2015.
Zumbahlen, H. (Ed.): Linear Circuit Design Handbook, Analog Devices, 2008.
Short summary
With the availability of unmanned aerial systems (UAS) such as octocopters a new versatile platform for signal-in-space measurements is deployable. This paper describes concept and design of an octocopter and its instrumentation, being used to investigate the possible interaction of terrestrial navigation systems such as DVORs and radars with single wind turbines (WT) or wind power plants.
With the availability of unmanned aerial systems (UAS) such as octocopters a new versatile...