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首页> 外文期刊>Radiation Protection Dosimetry >EXPOSURE OF THE GENERAL PUBLIC TO DIGITAL BROADCAST TRANSMITTERS COMPARED TO ANALOGUE ONES
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EXPOSURE OF THE GENERAL PUBLIC TO DIGITAL BROADCAST TRANSMITTERS COMPARED TO ANALOGUE ONES

机译：与模拟音频相比，通用的数字广播广播发射机的曝光

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摘要

The terrestrial digital video and audio broadcast are supposed to replace the existing analogue broadcast systems. To determine possible changes of this switchover on the public exposure situation to radio frequency electromagnetic fields, extensive measurements at more than 300 identical points were performed 'before' and accordingly 'after' the switchover. At the point with the highest sum-exposure, only 0.3% of the ICNIRP reference levels for general public exposure (power flux density) was reached. The statistical analysis of both measurement campaigns ('before-after') shows an increase in mean exposure in the centre of the DVB-T starting areas around Nuremberg and Munich, which is mainly based on the increase in the radiated power at the transmitter stations. After developing a simple calculation program based on the ITU-RE 1546, the measured exposure values were compared to calculations. Optimising the results leads to mean deviations of ± 3 dB at about 80% of all points.
机译：地面数字视频和音频广播应该取代现有的模拟广播系统。为了确定这种转换在公众暴露于射频电磁场的情况下可能发生的变化，在转换之前和之后分别在300多个相同点进行了广泛的测量。在最高总暴露量的点上，仅达到ICNIRP普通公众暴露（功率通量密度）参考水平的0.3％。对两个测量活动的统计分析（“前后”）表明，在纽伦堡和慕尼黑附近的DVB-T起始区域中心的平均暴露量有所增加，这主要是基于发射站辐射功率的增加。在根据ITU-RE 1546开发了简单的计算程序后，将测得的曝光值与计算结果进行了比较。优化结果会导致所有点约80％的平均偏差为±3 dB。

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