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- 2017
船载GNSS探测海洋水汽信息的影响因子分析
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Abstract:
利用船载全球卫星导航系统（global navigation satellite system，GNSS）方式探测海洋水汽含量，可丰富海洋水汽观测量和观测密度。利用印度洋航次试验实测数据，基于精密单点定位技术对海洋上空可降水份探测的精度问题进行了研究，主要分析了GNSS高程与可降水份之间存在的耦合关系，标定了动态GNSS的高程精度，分析了不同算法对可降水份估值的影响。结果显示：①固定解与浮点解、多系统与单系统对可降水份估算的影响不大，而不同软件、不同卫星星历和钟差产品对可降水份估算的影响较大，量级为2~4 mm；②高程与可降水份之间存在耦合关系，经初步估算，高程的均方根误差每增加24mm，则可降水份估值的均方根误差相应增加约1mm；③惯性测量单元垂荡值与精密单点定位高程结果之间的相关系数高达99%，二者的互差优于30mm，满足动态GNSS海洋水汽估计对高程精度的要求
| [1] | Fan Shijie, Liu Yanxiong, Gao Xingguo, et al. Retrieval Method of Marine Kinematic GPS Precipitable Water Vapor[J]. Journal of China University of Petroleum, 2012, 36(3):84-87(范士杰, 刘焱雄, 高兴国, 等. 海上动态GPS大气可降水量信息反演[J]. 中国石油大学学报:自然科学版, 2012, 36(3):84-87) |
| [2] | Li Li, Kuang Cuilin, Zhu Jianjun, et al. Near Real Time Acquisition of Tropospheric Delay Based on the GPS Un-differenced Technology[J]. Science of Surveying and Mapping, 2012, 37(2):22-25(李黎, 匡翠林, 朱建军, 等. 基于GPS非差技术近实时获取对流层延迟[J]. 测绘科学, 2012, 37(2):22-25) |
| [3] | Gao Xingguo, Liu Yanxiong, Feng Yikai, et al. Anlysis of Influence of Mapping Function on GNSS Tropospheric Delay[J]. Geomatics and Information Science of Wuhan University, 2010, 35(12):1401-1404(高兴国, 刘焱雄, 冯义楷,等. GNSS对流层延时映射函数影响分析比较研究[J]. 武汉大学学报·信息科学版, 2010, 35(12):1401-1404) |
| [4] | Fan Shijie, Liu Yanxiong, Gao Xingguo, et al. Estimate of GPS Slant-path Water Vapor Based on Singel-differenced Residuals Between Satellites[J]. Geomatics and Information Science of Wuhan University, 2012, 37(7):834-838(范士杰, 刘焱雄, 高兴国,等. 顾及星间单差残差的GPS斜路径水汽含量估计[J]. 武汉大学学报·信息科学版, 2012, 37(7):834-838) |
| [5] | Rocken C, Johnson J, Van Hove T, et al. Atmospheric Water Vapor and Geoid Measurements in the Open Ocean with GPS[J]. Geophysical Research Letters, 2005, 32(12) L12813.1-L12813.3 |
| [6] | Fujita M, Kimura F, Yoneyama K, et al. Verification of Precipitable Water Vapor Estimated from Shipborne GPS Measurements[J]. Geophysical Research Letters, 2008, 35(13) L13803.1-L13803.5 |
| [7] | Kealy J, Foster J, Businger S. GPS Meteorology:An Investigation of Ocean-based Precipitable Water Estimates[J]. Journal of Geophysical Research:Atmospherees, 2012, 117(17) D17303.1-D17303.11 |
| [8] | Fan Shijie. Research on GPS Marine Water Vapor Inversion and Three Dimensional Water Vapor Tomography[D]. Wuhan:Wuhan University, 2013(范士杰. GPS海洋水汽信息反演及三维层析研究[D]. 武汉:武汉大学, 2013) |
| [9] | Chen Yongqi, Liu Yanxiong, Wang Xiaoya, et al. GPS Real-time Estimation of Precipitable Water Vapor Hong Kong Experiences[J]. Acta Geodaetica et Cartographica Sinica, 2007, 36(1):9-13(陈永奇, 刘焱雄, 王晓亚,等. 香港实时GPS水汽监测系统的若干关键技术[J]. 测绘学报, 2007, 36(1):9-12) |
| [10] | Adams D K, Fernandes R M S, Maia J M F. GNSS Precipitable Water Vapor from an Amazonian Rain Forest Flux Tower[J]. Journal of Atmospheric and Oceanic Technology, 2011, 28(10):1192-1198 |
| [11] | Boniface K, Champollion C, Chery J, et al. Potential of Shipborne GPS Atmospheric Delay Data for Prediction of Mediterranean Intense Weather Events[J]. Atmospheric Science Letters, 2012, 13(4):250-256 |
| [12] | Liu Yanxiong, H B IZ, Chen Yongqi. Precise Determination of Dry Zenith Delay for GPS Meteorology Applications[J]. Acta Geodaetica et Cartographica Sinica, 2000, 29(2):172-180(刘焱雄, H B IZ, 陈永奇. GPS气象学中垂直干分量延时的精确确定[J]. 测绘学报, 2000, 29(2):172-180) |
| [13] | Chadwell C D, Bock Y. Direct Estimation of Absolute Precipitable Water in Oceanic Regions by GPS Tracking of a Coastal Buoy[J]. Geophysical Research Letters, 2001, 28(19):3701-3704 |
| [14] | Liu Yanxiong, H B IZ, Chen Yongqi. Monitoring the Water Vapor Content in the Atmosphere in Hong Kong Through Ground-based GPS Technique[J]. Journal of Wuhan Technical University of Surveying and Mapping, 1999, 24(3):245-248(刘焱雄, H B IZ, 陈永奇. 地基GPS技术遥感香港地区大气水汽含量[J]. 武汉测绘科技大学学报, 1999, 24(3):245-248) |
| [15] | Liu Yanxiong, Chen Yongqi, H B IZ. The Effect of Approximation Error and Observation Error on Precipitable Water Vapor[J]. Journal of Wuhan Technical University of Surveying and Mapping, 2000, 25(2):105-107(刘焱雄, 陈永奇, H B IZ. 可降水份的误差分析[J]. 武汉测绘科技大学学报, 2000, 25(2):105-107) |
| [16] | Webb S R, Penna N T, Clarke P J, et al. Kinematic GNSS Estimation of Zenith Wet Delay over a Range of Altitudes[J]. Journal of Atmospheric and Oceanic Technology, 2016, 33(1):3-15 |
