GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration
GNSS-R Derived Centimetric Sea Topography: An Airborne Experiment Demonstration
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DOI：
10.1109/jstars.2013.2257990
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发表时间：
2013-05
影响因子：
5.5
通讯作者：
H. Carreno-Luengo;Hyuk Park;Adriano Camps;F. Fabra;A. Rius
中科院分区：
文献类型：
--
作者：
H. Carreno-Luengo;Hyuk Park;Adriano Camps;F. Fabra;A. Rius
两个机载实验的结果进行测试的精度和相对精度的传统的全球导航卫星系统反射计（GNSS-R）技术只采用C/A码。第一次和第二次实验分别证明，在500米飞行高度下，精度为17厘米，沿航迹空间分辨率为8公里，在3000米飞行高度下，精度为6厘米，沿航迹空间分辨率为6.6公里。在这两种情况下，相对平均动态地形（RMDT）与Jason-2提供的传统雷达测高的结果进行了比较。两个测量系统之间的RMDT差的均方根（RMS）对于第一次飞行是48 cm，对于第二次飞行是198 cm。在第二次飞行中，所提出的技术来测量海坡的可行性证明了叠加在飞机地面跟踪测得的海面高度与大地水准面起伏，这是约1米。
The results of two airborne experiments performed to test the precision and the relative accuracy of the conventional Global Navigation Satellite Systems Reflectometry (GNSS-R) technique employing only the C/A code are presented. The first and the second experiments demonstrate, respectively, a 17 cm precision for a 500 m flight altitude with a 8 km along-track spatial resolution, and a 6 cm precision for a 3000 m flight altitude with a 6.6 km along-track spatial resolution. In both, the Relative Mean Dynamic Topography (RMDT) is compared with results derived from traditional radar altimetry provided by Jason-2. The Root Mean Square (RMS) of the RMDT difference between both measurement systems is 48 cm for the first flight, and 198 cm for the second flight. During the second flight, the feasibility of the proposed technique to measure the sea slopes is demonstrated by superposing over the aircraft ground track the measured sea surface height with the geoid undulations, which are about 1 meter.