西藏自治区阿里地区无线电噪声测量与分析

Measurement and analysis of radio noise in Ngari Prefecture of Tibet Autonomous Region

针对西藏自治区阿里地区夏季高频无线电噪声情况进行了为期一个月的测量。将实测数据进行了处理，并与ITU-R P.372-10建议书的预测值进行了比较和分析。结果表明，该地区的无线电噪声水平在2～8 MHz上昼夜变化较为明显，在8～30 MHz上昼夜变化不大，在白天大部分频段接近于ITU-R P.372-10建议书中农村级预测值。

HF radio noise in Ngari Prefecture of Tibet Autonomous Region was measured in a month in summer. The mea-sured data was processed and compared with the predicted value in Recommendation ITU-R P.372-10. The results show that the diurnal change of the radio noise in this area is obvious between 2 MHz and 8 MHz,but is not obvious between 8 MHz and 30 MHz,and the radio noise in the most HF bands during daytime is close to the rural predicted value in Recommendation ITU-R P.372-10.