© Fraunhofer IIS GERMAN PARTICIPATION IN HF CHANNEL AVAILABILITY MEASUREMENTS Wideband Channel...
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Transcript of © Fraunhofer IIS GERMAN PARTICIPATION IN HF CHANNEL AVAILABILITY MEASUREMENTS Wideband Channel...
© Fraunhofer IIS
GERMAN PARTICIPATION IN HFCHANNEL AVAILABILITY MEASUREMENTSWideband Channel Availability Working Group – [email protected]
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Agenda
Short overview on…
our funded study
the available German measurement sites
the data acquisition method and software
the planned data analysis metrics
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Overview of the study
Study is funded by German BAAINBw (Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support)
Official contact: Department I 6.1, [email protected]
Title for reference: “Nationale Breitband-Kanalverfügbarkeit”
Main goals:
Analyze appropriate availability metrics
Design and setup measurement hardware and campaign
Give hints for potential future frequency allocation schemes
Time frame: 05/2014 – 10/2014
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Available measurement sites within Germany
Eckernförde, WTD 71(very quiet, costal)
Ilmenau, University/FhG IIS(quiet urban, rural)
Erlangen, FhG IIS(urban)
Nürnberg/Nuremberg, FhG IIS(urban)
Greding, WTD 81(rural)
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Available measurement sites within GermanySite Erlangen, FhG IIS
Hardware: Perseus-SDR, R&S HE011 active antenna (roof top, 3 floors)
Specialty: DRM-Transmitter (15,785 MHz, 100 W avg.) of student radio „Bit-Express“ on tower directly on site (50 m distance)
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Available measurement sites within GermanySite Nürnberg/Nuremberg, FhG IIS
Hardware: Perseus-SDR, R&S HE010 active antenna (roof top, 3 floors)
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Available measurement sites within GermanySite Ilmenau, FhG IIS
Hardware: Perseus-SDR, DX10 active antenna (roof top)
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Available measurement sites within GermanySite Eckernförde/Schwedeneck, WTD 71
Hardware: Perseus-SDR, R&S HE010 active antenna (container, near sea)
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Available measurement sites within GermanySite Greding, WTD 81
Hardware: Perseus-SDR, stationary omni-directional antenna (on field)
Antennas temporarily available (except TX test periods)
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Method used for data acquisition and storage
Designed for compatibility with existing measurement setups within this working group
1 MHz signal bandwidth
4096 FFT for 488 Hz resolution bw.
Averaging for 1 second
Mean and max values stored (float)
Software written in Python for easy extension
Scientific exchange with University of Erlangen/Nuremberg working on channel measurement/modelling
Data acquisition(mostly „Perseus SDR“ receiver with active antennas)
Data collection(Continuos sweep 2-30 MHz in 1 MHz steps every 1 sec)
Data pre-processing(4k FFT, BW 1 MHz, RB 488 Hz, AVG 1 s)
storage
Data post-processing(Windowing to 3-24 kHz channels, time averaging, misc availability metrics)
Report generation
DEU NATO
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Planned data analysis metrics
2 Goals
Preparation of results for German frequency allocation requirements
Compatibility and comparability to this working group (resp. NATO)
TBD TBD
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End of presentation
Thanks for your attention!
Contact / questions / remarks to:
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