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ITU-R Recommendation SM.2039 (08/2013) “Spectrum monitoring evolution”
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ITU-R Report SM.2356-1 (06/2017) “Procedures for planning and optimization of spectrum-monitoring networks in the VHF/UHF frequency range”
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ITU-R Report SM.2211-2 (06/2018) “Comparison of time-difference-of-arrival and angle-of-arrival methods of signal geolocation”