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Concept of Longterm EMF-Monitoring

Concept of Longterm EMF-Monitoring. Contents. Risk communication Measurement criterias Benefits of Automated Longterm Measurements Measurement procedure and configuration Experience made Summary. community of highly concerned. undefined concerns. ambiguous. indifferent.

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Concept of Longterm EMF-Monitoring

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  1. Concept ofLongterm EMF-Monitoring

  2. Contents • Risk communication • Measurement criterias • Benefits of Automated Longterm Measurements • Measurement procedure and configuration • Experience made • Summary

  3. community of highly concerned undefined concerns ambiguous indifferent Example for an Successful Risk Communication Driving factor is fear and uncertainty of people. Measurements can create a basis for discussion, which people can understand and trust. Key issue are credible, comprehensive results. Different results and criteria apply for different groups. Otherwise the risk is growing concerns and influence of others. Influence Segmentation of EMF awareness

  4. undefined concerns ambiguous unconcerned Example for an Successful Risk Communication community of highly concerned Driving factor is fear and uncertainty of people. Measurements can create a basis for discussion, which people can understand and trust. Key issue are credible, comprehensive results. Different results and criteria apply for different groups. Otherwise the risk is growing concerns and influence of others. Influence Segmentation of EMF awareness

  5. Measurement Criterias General • Standardized measurement procedure for comparability • Information on procedure and results Undefined concerns • Results easily accesible • Results easily understandable and interpretable • High density of measurements to cover represantative configurations • Trust in the responsible organization and measurement procedure  Reliable information

  6. Measurement Criterias Community of highly concerned • Results must be traceable • Detailed information on measurement conditions • Results must endure comparison with third party measurements • Results for different frequencies and services with evidence of also smaller emissions must be available  Proof of correct and traceable measurements  Ability to show results for specific investigations

  7. Benefits of Automated Longterm Measurements • Installation conditions • Ruggedized design and easy installation • No experts needed for putting into service • Easy to cover large areas • Conditions for the results • Surpassing repeatability and traceability of the results. • Possibility of central database with directly comparable data. • Measurement of the actual immission, no extrapolationNew technologies (e.g. MIMO) make extrapolation difficult anyway. • Longterm evaluation allows correlation with public discomforts. • Longterm evaluation can prove any transmitter changes. • Realtime results prove authenticity. • The trustworthiness has to be proven only once.Measurement failures can be minimized.

  8. Necessary Requirements • All relevant emitters can be covered • 9 kHz to 3 GHz / 6 GHz • Allocation of emission to the emitter • Frequency selective measurement • Jammers, pirate radios and unusual emissions are identified • Measurement independant from direction and polarization • Isotropic loop antenna 9 kHz to 130 MHz • Isotropic E-field antenna 130 MHz to 3 GHz / 6 GHz • High dynamic and sensitivity • Emitters of interest (e.g. close-by base station) must be detectable in presence of stronger emitters (e.g. more distant TV station). • Evaluation according to different criteria (e.g. ICNIRP) • Outdoor capability • Transportable • Configuration possibility for special measurement tasks

  9. Experience with Automatic Longterm Monitoring

  10. Measurement Sequence Automatic sensitivity detection Measurement of frequency subranges In case of no signal detected in subrange: Improved sensitivity setting Remote configuration Measurement of special services (e.g. DVB, UMTS, DECT, Radar) Data transfer (e.g. GPRS) Evalualation and compression of results Test report incl. environmental / GPS / Status data Measurement of signal bandwidth Check of plausibility

  11. Summary • Automatic monitoring improves repeatability and traceability • Detailed results for each service for transparancy • Longterm results showing fieldstrength variation allow correlation with complaints • Versatile tool for special investigations

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