|
|||||
|
|
| 阵列天气雷达设计与初步实现 | |
| 引用本文： | 马舒庆,陈洪滨,王国荣,甄小琼,许晓平,李思腾.阵列天气雷达设计与初步实现[J].应用气象学报,2019,30(1):1-12. |
| 作者姓名： | 马舒庆 陈洪滨 王国荣 甄小琼 许晓平 李思腾 |
| 作者单位： | 1.中国气象局气象探测中心, 北京 100081 |
| 基金项目： | 国家自然科学基金国家重大科研仪器研制（部委推荐）项目（31727901） |
| 摘 要： | 阵列天气雷达是分布式、高度协同的相控阵天气雷达。阵列天气雷达至少包括3个相控阵收发子阵（简称收发子阵），通过增加收发子阵而扩大探测区域。每3个相邻的收发子阵一组协同扫描，保证3个相邻收发子阵在同一个空间点的数据时差小于2 s，从而保证径向速度合成正确的流场。采用相控阵多波束扫描技术，4个发射波束和64个接收波束覆盖0°~90°仰角，机械扫描覆盖360°方位，整个体扫时间为12 s，为多普勒天气雷达整个体扫时间的1/30。阵列天气雷达通过金属球进行了强度、波束宽度、方位、仰角的定标。阵列天气雷达在长沙机场布设试验，成功获取了精细的风场和回波强度数据，可为更精细、更完整揭示小尺度天气系统变化规律提供新工具。 |
| 关 键 词： | 阵列天气雷达 相控阵天气雷达 风场 网络化天气雷达 回波强度 |
| 收稿时间： | 2018/9/7 0:00:00 |
| 修稿时间： | 2018/12/12 0:00:00 |
Design and Initial Implementation of Array Weather Radar |
|
| Ma Shuqing,Chen Hongbin,Wang Guorong,Zhen Xiaoqiong,Xu Xiaoping and Li Siteng.Design and Initial Implementation of Array Weather Radar[J].Quarterly Journal of Applied Meteorology,2019,30(1):1-12. | |
| Authors: | Ma Shuqing Chen Hongbin Wang Guorong Zhen Xiaoqiong Xu Xiaoping and Li Siteng |
| Affiliation: | 1.Meteorological Observation Center of CMA, Beijing 1000812.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000293.College of Electronic Engineering, Chengdu University of Information Technology, Chengdu 6102254.University of Chinese Academy of Sciences, Beijing 1000495.Eastone Washon Science and Technology Ltd, Changsha 4100006.Institute of Urban Meteorology, CMA, Beijing 100089 |
| Abstract: | With the development of phased array technology and networked radars, focusing on the requirement of small-scale weather fine detection, the array weather radar (AWR) is developed, which is a distributed and highly collaborative radar. The traditional Doppler weather radar can obtain radial velocity of cloud or precipitation targets. However, single radial velocity of a spatial point cannot reflect the movement information of precipitation and atmosphere. A multi-radar network can obtain a plurality of radial velocity values using a collaborative detection method, but disadvantages are that the time difference of the same single spatial point obtained by multiple radars is high, leading to composition error of the velocity or invalid observation. The AWR comprises at least three phased array transmit-receive subarrays (subarrays for short), and the detection region of the AWR can be enlarged by increasing the number of subarrays. The AWR employs a multi-beam phase array scanning technology, which has 4 transmission beams and 64 receiving beams covering an elevation angle between 0° and 90°. And meanwhile, a 360° azimuth is covered by mechanical scanning. One volume scanning time of the AWR is 12 s which are several tenths of the traditional Doppler weather radar. Each three adjacent subarrays work as a group, which performs collaborative scanning to ensure data time differences at the same spatial point from three adjacent subarrays are less than 2 s, and then correct flow fields can be synthesized by using radial velocity of the subarrays. This is a big progress in acquiring thermodynamic information and dynamic information of precipitation targets. One AWR consisting of three subarrays has been deployed at Changsha Airport and has acquired three-dimensional velocity and intensity (reflectivity factor) data, and more fine information of small-scale weather systems may be obtained by using data. There are still a lot of problems to be solved and a lot of works to be done in the field of the AWR technology and application. |
| Keywords: | array weather radar (AWR) phased array weather radar wind field networked weather radar reflectivity |
| 本文献已被 CNKI 等数据库收录！ | |
| 点击此处可从《应用气象学报》浏览原始摘要信息 | |
| 点击此处可从《应用气象学报》下载全文 | |
