| 新一代天气雷达负仰角探测能力分析 |
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| 引用本文： | 张扬成,游文华,高翔宇,陈汇,刘翔.新一代天气雷达负仰角探测能力分析[J].气象科技,2013,41(1):15-19. |
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| 作者姓名： | 张扬成 游文华 高翔宇 陈汇 刘翔 |
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| 作者单位： | 1. 福建省气象台,福州350001;南京信息工程大学,南京210044
2. 福建省气象台,福州,350001 |
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| 摘 要： | 由于地球曲率的影响,当CINRAD.SA新一代天气雷达使用目前最低仰角同定为0.5°的模式探测时,探测肓区较大,对低层降水回波的探测能力严重不足.在实地展开试验的基础上,推导了负仰角探测时雷达最低探测高度计算公式,计算出仰角为0.5°、0°、-0.3°、-0.5°时不同探测距离上的雷达最低探测高度,对比分析不同仰角观测模式的主要雷达产品特点,探讨新一代天气雷达使用负仰角观测模式的局限性,提出了新一代天气雷达使用负仰角观测的建议.
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| 关 键 词： | 负仰角 最低探测高度 最大探测距离 多普勒天气雷达 |
| 收稿时间： | 2012/8/25 0:00:00 |
| 修稿时间： | 2012/11/24 0:00:00 |
Analysis of Detection Capability of CINRAD/SA Using Negative Elevation Angle |
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| Zhang Yangcheng,You Wenhu,Gao Xiangyu,Cheng Hui and Liu Xiang.Analysis of Detection Capability of CINRAD/SA Using Negative Elevation Angle[J].Meteorological Science and Technology,2013,41(1):15-19. |
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| Authors: | Zhang Yangcheng You Wenhu Gao Xiangyu Cheng Hui and Liu Xiang |
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| Institution: | 1(1 Fujian Meteorological Observatory,Fuzhou 350001;2 Nanjing University of Information Science & Technology,Nanjing 210044) |
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| Abstract: | Due to the influence of the curve Earth, the fixed detection mode of the CINRAD/SA weather radar uses the minimum elevation angle of 0.5 °, so the blind area is relatively big, and the detection capability for low level precipitation echoes is limited. On the basis of experiments, the calculation formulas of the minimum height applicable when CINRAD/SA detects with positive and negative elevation angles are devised. Then the minimum detecting heights of CINRAD/SA at different distances with different elevation angles (0.5°, 0°, -0.3°,-0.5°) are calculated. Through analyzing characteristics of radar products detected under different elevation angles, some suggestions on CINRAD/SA about using negative elevation angles are presented. |
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