共查询到20条相似文献，搜索用时 78 毫秒
1.
本文通过动力海洋学的典型空间尺度与ＧＥＯ－３，ＳＥＡＳＡＴ，ＧＥＯＳＡＴ和ＴＯＰＥＸ／Ｐｏｓｅｉｄｏｎ等卫星高度计测量高度的精度作比较，将星载高度计应用对测轨精度的要求作了总结。对大多数海洋学研究来说，应用卫星高度计数据要求测轨精度达到数十厘米。 相似文献
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卫星高度计可获取有关海南流浪和粗糙度的信息，并可给出较高精度的海浪有效流高值。以１９８８年ＧＥＯＳＡＴ高度计资料为依据，研究了分析南海北部海域的有效波高特征，并与常规断面调查所得结论作了比较分析。 相似文献
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用GEOSAT卫星高度计资料估计热带西太平洋赤道纬向地转流 总被引：1，自引：0，他引：1
卫星高度计资料在海洋动力学中的应用主要是进行涨平面及海流变化的研究。在物理海洋学中，海流速度的测定是非常重要的，所以用高度资料推算地转流有重要意义。本文用２年多的ＧＥＯＳＡＴ卫星高度计资料，根据地转平衡方程，计算了赤道１６５°Ｅ的纬向地转流速度，并且将推算值与实测资料进行了比较，其相关系数为０．８５，达到了令人满意的。实践证明只要对高度计资料的质量控制、误差订正等处理方法得当，滤波方法及尺度选择合 相似文献
4.
本文是挪威ＯＣＥＡＮＯＲ公司１９９５年５月２日编写的《ＳＥＡＷＡＴＣＨ气象／海洋资料浮标》（ＴｈｅＳＥＡＷＡＴＣＨＭｅｔｏｃｅａｎＤａｔａＢｕｏｙ）中的两节。文章详细介绍了最近十年国外测波浮标试验的若干情况，对我国测波浮标的研制和使用有所启发。现译出，供参考。文章标题系译者所加。 相似文献
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《海洋地质与第四纪地质》1998,(2)
珍惜自然资源保护地球环境——纪念世界地球日２８周年ＣＨＥＲＩＳＨＮＡＴＵＲＡＬＲＥＳＯＵＲＣＥＳＡＮＤＰＲＯＴＥＣＴＴＨＥＥＡＲＴＨＥＮＶＩＲＯＮＭＥＮＴ——ＤＥＤＩＣＡＴＥＤＴＯＴＨＥ２８ＴＨＡＮＮＩＶＥＲＳＡＲＹＯＦＴＨＥＷＯＲＬＤＥＡＲＴＨＤＡ... 相似文献
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李绍全 《海洋地质与第四纪地质》1997,17(2):8-8,28
中韩合作南黄海第四纪地质对比研究之进展ＰＲＯＧＲＥＳＳＯＦＳＩＮＯ－ＫＯＲＥＡＱＵＡＴＥＲＮＡＲＹＧＥＯＬＯＧＩＣＣＯＲＲＥＬＡＴＩＯＮＳＴＵＤＹＯＦＴＨＥＳＯＵＴＨＹＥＬＬＯＷＳＥＡ黄海是典型的冰后期的边缘海，中韩两国共享南黄海陆架。黄海及其陆架对... 相似文献
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ＴＲＡＮＳＧＲＥＳＳＩＯＮＳＯＦＬＡＴＥＣＲＥＴＡＣＥＯＵＳＴＯＥＡＲＬＹＴＥＲＴＩＡＲＹＩＮＥＡＳＴＥＲＮＣＨＩＮＡＱｉｕＳｏｎｇｙｕ，ＬｕＢｉｎｇｌｉ，ＣｈｅｎＹｏｎｇｃｈｅｎｇ（ＪｉｌｉｎＨｅａｄｑｕａｒｔｅｒｓＯｆＰｅｔｒｏｌｅｕｍＰｒｏｓｐ... 相似文献
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《海洋地质与第四纪地质》1994,(2)
攀登海洋地质科学高峰──记李四光地质科学野外地质工作奖获得者王光宇教授的科学事迹ＡＭＡＮＤＥＶＯＴＥＤＨＩＭＳＥＬＦＴＯＭＡＲＩＮＥＧＥＯＬＯＧＩＣＡＬＳＸＩＥＮＣＥ地矿部广州海洋地质调查局王光宇教授，１９９３年１０月喜获第三届李四光地质科学野外地质... 相似文献
10.
Study on detection of coastal water environment of China by ocean color remote sensing 总被引：11，自引：1，他引：11
ＳＡＴＥＬＬＩＴＥＰＲＯＧＲＡＭＳＦＯＲＣＯＡＳＴＡＬＷＡＴＥＲＤＥＴＥＣＴＩＯＮＳｉｎｃｅｔｈｅ 1 980ｓ,ｇｒｅａｔａｔｔｅｎｔｉｏｎｈａｓｂｅｅｎｐａｉｄｔｏｔｈｅａｄｖａｎｃｅｄｒｅｍｏｔｅｓｅｎｓｉｎｇｔｅｃｈｎｉｑｕｅｉｎＣｈｉｎａ ,ｅｓｐｅｃｉａｌｌｙｔｏｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｓａｔｅｌｌｉｔｅｐｒｏｇｒａｍｓｆｏｒｃｏａｓｔａｌｗａｔｅｒｅｎｖｉｒｏｎｍｅｎｔ.Ｔｗｏｏｃｅａｎｃｏｌｏｒｃｈａｎｎｅｌｓａｄｄｅｄｔｏｔｈｅｆｉｒｓｔｒｅｍｏｔｅｓｅｎｓｉｎｇｓａｔｅｌｌｉｔ… 相似文献
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《Marine Geodesy》2013,36(3-4):399-421
The Jason-1 radar altimeter satellite, launched on December 7, 2001 is the follow on to the highly successful TOPEX/Poseidon (T/P) mission and will continue the time series of centimeter level ocean topography measurements. Orbit error is a major component in the overall error budget of all altimeter satellite missions. Jason-1 is no exception and has set a 1-cm radial orbit accuracy goal, which represents a factor of two improvement over what is currently being achieved for T/P. The challenge to precision orbit determination (POD) is both achieving the 1-cm radial orbit accuracy and evaluating the performance of the 1-cm orbit. There is reason to hope such an improvement is possible. The early years of T/P showed that GPS tracking data collected by an on-board receiver holds great promise for precise orbit determination. In the years following the T/P launch there have been several enhancements to GPS, improving its POD capability. In addition, Jason-1 carries aboard an enhanced GPS receiver and significantly improved SLR and DORIS tracking systems along with the altimeter itself. In this article we demonstrate the 1-cm radial orbit accuracy goal has been achieved using GPS data alone in a reduced dynamic solution. It is also shown that adding SLR data to the GPS-based solutions improves the orbits even further. In order to assess the performance of these orbits it is necessary to process all of the available tracking data (GPS, SLR, DORIS, and altimeter crossover differences) as either dependent or independent of the orbit solutions. It was also necessary to compute orbit solutions using various combinations of the four available tracking data in order to independently assess the orbit performance. Towards this end, we have greatly improved orbits determined solely from SLR+DORIS data by applying the reduced dynamic solution strategy. In addition, we have computed reduced dynamic orbits based on SLR, DORIS, and crossover data that are a significant improvement over the SLR- and DORIS-based dynamic solutions. These solutions provide the best performing orbits for independent validation of the GPS-based reduced dynamic orbits. The application of the 1-cm orbit will significantly improve the resolution of the altimeter measurement, making possible further strides in radar altimeter remote sensing. 相似文献
12.
The 1-Centimeter Orbit: Jason-1 Precision Orbit Determination Using GPS, SLR, DORIS, and Altimeter Data 总被引：1，自引：0，他引：1
S. B. Luthcke N. P. Zelensky D. D. Rowlands F. G. Lemoine T. A. Williams 《Marine Geodesy》2003,26(3):399-421
The Jason-1 radar altimeter satellite, launched on December 7, 2001 is the follow on to the highly successful TOPEX/Poseidon (T/P) mission and will continue the time series of centimeter level ocean topography measurements. Orbit error is a major component in the overall error budget of all altimeter satellite missions. Jason-1 is no exception and has set a 1-cm radial orbit accuracy goal, which represents a factor of two improvement over what is currently being achieved for T/P. The challenge to precision orbit determination (POD) is both achieving the 1-cm radial orbit accuracy and evaluating the performance of the 1-cm orbit. There is reason to hope such an improvement is possible. The early years of T/P showed that GPS tracking data collected by an on-board receiver holds great promise for precise orbit determination. In the years following the T/P launch there have been several enhancements to GPS, improving its POD capability. In addition, Jason-1 carries aboard an enhanced GPS receiver and significantly improved SLR and DORIS tracking systems along with the altimeter itself. In this article we demonstrate the 1-cm radial orbit accuracy goal has been achieved using GPS data alone in a reduced dynamic solution. It is also shown that adding SLR data to the GPS-based solutions improves the orbits even further. In order to assess the performance of these orbits it is necessary to process all of the available tracking data (GPS, SLR, DORIS, and altimeter crossover differences) as either dependent or independent of the orbit solutions. It was also necessary to compute orbit solutions using various combinations of the four available tracking data in order to independently assess the orbit performance. Towards this end, we have greatly improved orbits determined solely from SLR+DORIS data by applying the reduced dynamic solution strategy. In addition, we have computed reduced dynamic orbits based on SLR, DORIS, and crossover data that are a significant improvement over the SLR- and DORIS-based dynamic solutions. These solutions provide the best performing orbits for independent validation of the GPS-based reduced dynamic orbits. The application of the 1-cm orbit will significantly improve the resolution of the altimeter measurement, making possible further strides in radar altimeter remote sensing. 相似文献
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AbstractHY-2A, which was launched on 16 August 2011, is the Chinese first microwave ocean dynamics environment satellite. Analyses of HY-2A daily sea-level anomaly data and HY-2A–Jason-2 (H-J) dual crossover sea-level anomaly differences show that HY-2A has measurement differences that mainly refer to an orbit error. H-J crossover differences and HY-2A–HY-2A (H-H) crossover differences give an estimate of the HY-2A orbit error. Smoothing cubic-spline functions are then used to obtain a continuous estimation of the HY-2A orbit error over time. On the basis of the simultaneous global minimization of H-J dual crossover differences and H-H crossover differences, the HY-2A observation error is efficiently reduced and height measurement data that are more precise are obtained. Specifically, the range bias/trend of the HY-2A altimeter is removed effectively and the root mean square of H-J crossover sea-level anomaly differences decrease from above 60?cm to 5.64?cm, and the standard deviation of H-J crossover differences decreases from 6.68 to 5.64?cm. Furthermore, the rms and standard deviations of H-H crossover differences both decrease from 7.46 to 6.55?cm. The results show that HY-2A after correction has a measurement accuracy and precision that are comparable to those of Jason-2. 相似文献
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Robert E. Cheney Bruce C. Douglas David T. Sandwell James G. Marsh Thomas V. Martin John J. McCarthy 《Marine Geophysical Researches》1984,7(1-2):17-32
Satellite-borne altimeters have had a profound impact on geodesy, geophysics, and physical oceanography. To first order approximation,
profiles of sea surface height are equivalent to the geoid and are highly correlated with seafloor topography for wavelengths
less than 1000 km. Using all available Geos-3 and Seasat altimeter data, mean sea surfaces and geoid gradient maps have been
computed for the Bering Sea and the South Pacific. When enhanced using hill-shading techniques, these images reveal in graphic
detail the surface expression of seamounts, ridges, trenches, and fracture zones. Such maps are invaluable in oceanic regions
where bathymetric data are sparse. Superimposed on the static geoid topography is dynamic topography due to ocean circulation.
Temporal variability of dynamic height due to oceanic eddies can be determined from time series of repeated altimeter profiles.
Maps of sea height variability and eddy kinetic energy derived from Geos-3 and Seasat altimetry in some cases represent improvements
over those derived from standard oceanographic observations. Measurement of absolute dynamic height imposes stringent requirements
on geoid and orbit accuracies, although existing models and data have been used to derive surprisingly realistic global circulation
solutions. Further improvement will only be made when advances are made in geoid modeling and precision orbit determination.
In contrast, it appears that use of altimeter data to correct satellite orbits will enable observation of basin-scale sea
level variations of the type associated with climatic phenomena. 相似文献
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YOKE T. YOON STEVEN R. NEREM MICHAEL M. WATKINS BRUCE J. HAINES GERHARD L. KRUIZINGA 《Marine Geodesy》2013,36(3-4):773-787
We have used GPS carrier phase integer ambiguity resolution to investigate improvements in the orbit determination for the Jason-1 satellite altimeter mission. The technique has been implemented in the GIPSY orbit determination software developed by JPL. The radial accuracy of the Jason-1 orbits is already near 1 cm, and thus it is difficult to detect the improvements gained when the carrier phase ambiguities are resolved. Nevertheless, each of the metrics we use to evaluate the orbit accuracy (orbit overlaps, orbit comparisons, satellite laser ranging residuals, altimeter crossover residuals, orbit centering) show modest improvement when the ambiguities are resolved. We conservatively estimate the improvement in the radial orbit accuracy is at the 10–20% level. 相似文献
20.
海洋二号卫星厘米级定轨的实施建议 总被引：1，自引：0，他引：1
针对海洋二号（HY-2）卫星如何实现厘米级定轨问题,提出下列建议：海洋二号卫星不必采用DORIS定轨;给海洋二号卫星装备无电功耗需求的激光后向反射镜阵列,以便对它进行多个SRL测站观测的激光厘米级定轨;给海洋二号卫星装备具有双频载波相位测量能力的GPS信号接收机,实现高精度的星载GPS测量定轨. 相似文献