Concept of
Longterm EMF-Monitoring
Contents
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Risk communication
Measurement criterias
Benefits of Automated Longterm Measurements
Measurement procedure and configuration
Experience made
Summary
Date | Title of presentation | 2
Example for an Successful Risk Communication
Key issue are credible, comprehensive results.
Different results and criteria apply for different
groups.
undefined
concerns
ambiguous
Otherwise the risk is growing concerns and
influence of others.
indifferent
Segmentation of EMF awareness
Date | Title of presentation | 3
Influence
Driving factor is fear and uncertainty of people.
Measurements can create a basis for discussion,
which people can understand and trust.
community of highly
concerned
Example for an Successful Risk Communication
Influence
Driving factor is fear and uncertainty of people.
Measurements can create a basis for discussion,
which people can understand and trust.
community of highly
concerned
Key issue are credible, comprehensive results.
Different results and criteria apply for different
groups.
undefined
concerns
Otherwise the risk is growing concerns and
influence of others.
ambiguous
Segmentation of EMF awareness
Date | Title of presentation | 4
unconcerned
Measurement Criterias
General
l Standardized measurement procedure for comparability
l Information on procedure and results
Undefined concerns
l Results easily accesible
l Results easily understandable and interpretable
l High density of measurements to cover represantative
configurations
l Trust in the responsible organization and measurement procedure
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Reliable information
Date | Title of presentation | 5
Measurement Criterias
Community of highly concerned
l Results must be traceable
l Detailed information on measurement conditions
l Results must endure comparison with third party measurements
l Results for different frequencies and services with evidence of
also smaller emissions must be available
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Proof of correct and traceable measurements
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Ability to show results for specific investigations
Date | Title of presentation | 6
Benefits of Automated Longterm Measurements
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Installation conditions
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Conditions for the results
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Ruggedized design and easy installation
No experts needed for putting into service
Easy to cover large areas
Surpassing repeatability and traceability of the results.
Possibility of central database with directly comparable data.
Measurement of the actual immission, no extrapolation
New 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.
Date | Title of presentation | 7
Necessary Requirements
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All relevant emitters can be covered
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Allocation of emission to the emitter
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Isotropic loop antenna 9 kHz to 130 MHz
Isotropic E-field antenna 130 MHz to 3 GHz / 6 GHz
High dynamic and sensitivity
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Frequency selective measurement
Jammers, pirate radios and unusual emissions are identified
Measurement independant from direction and polarization
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9 kHz to 3 GHz / 6 GHz
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
Date | Title of presentation | 8
Experience with Automatic Longterm Monitoring
Date | Title of presentation | 11
Measurement Sequence
Automatic
sensitivity detection
Measurement of frequency subranges
In case of no signal detected in subrange:
Improved sensitivity setting
Measurement of special services
(e.g. DVB, UMTS, DECT, Radar)
Remote configuration
Data transfer
(e.g. GPRS)
Evalualation and compression of results
Test report incl. environmental
/ GPS / Status data
Measurement of signal bandwidth
Check of plausibility
Date | Title of presentation | 14
Summary
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Automatic monitoring improves repeatability and traceability
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Detailed results for each service for transparancy
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Longterm results showing fieldstrength variation allow
correlation with complaints
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Versatile tool for special investigations
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