俄勒冈州比佛顿，2005年2月9日，泰克公司(NYSE：TEK)——全球领先的视频测试、测量和监视设备的供应商，今天发布消息：亚洲规模最大的体育电视广播商ESPN STAR Spots已决定订购泰克公司的WVR600系列监测仪以控制他们的播出质量。泰克...俄勒冈州比佛顿，2005年2月9日，泰克公司(NYSE：TEK)——全球领先的视频测试、测量和监视设备的供应商，今天发布消息：亚洲规模最大的体育电视广播商ESPN STAR Spots已决定订购泰克公司的WVR600系列监测仪以控制他们的播出质量。泰克公司在设计WVR600系列时，就是将它们用来监视模拟和数字视音频信号，以在最合理的价位上提供最优异的质量。展开更多
In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sit...In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sites, including 260 belonging to the Crustal Movement Observation Network of China （CMONOC） and 692 belonging to the China Meteorological Administration GNSS network （CMAGN）. Additionally, GNSS observation collecting and data processing procedures are presented and PWV data quality control methods are investigated. PWV levels as determined by GNSS and radiosonde are compared. The results show that GNSS estimates are generally in good agreement with measurements of radio- sondes and water vapor radiometers （WVR）. The PWV retrieved by the national GNSS network is used in weather forecasting, assimilation of data into numerical weather prediction models, the validation of PWV estimates by radiosonde, and plum rain monitoring. The network is also used to monitor the total ionospheric electron content.展开更多
文摘俄勒冈州比佛顿，2005年2月9日，泰克公司(NYSE：TEK)——全球领先的视频测试、测量和监视设备的供应商，今天发布消息：亚洲规模最大的体育电视广播商ESPN STAR Spots已决定订购泰克公司的WVR600系列监测仪以控制他们的播出质量。泰克公司在设计WVR600系列时，就是将它们用来监视模拟和数字视音频信号，以在最合理的价位上提供最优异的质量。
基金financially supported by the Special Fund for Meteorological Scientific Research in the Public Interest(GYHY201406012)the National Natural Science Foundation of China(41275114)a construction fund for CMONOC
文摘In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sites, including 260 belonging to the Crustal Movement Observation Network of China （CMONOC） and 692 belonging to the China Meteorological Administration GNSS network （CMAGN）. Additionally, GNSS observation collecting and data processing procedures are presented and PWV data quality control methods are investigated. PWV levels as determined by GNSS and radiosonde are compared. The results show that GNSS estimates are generally in good agreement with measurements of radio- sondes and water vapor radiometers （WVR）. The PWV retrieved by the national GNSS network is used in weather forecasting, assimilation of data into numerical weather prediction models, the validation of PWV estimates by radiosonde, and plum rain monitoring. The network is also used to monitor the total ionospheric electron content.
