摘要
在传统卫星高度计定标途径之外,探索了远海孤岛验潮站和深海压力仪分别用于卫星高度计性能评估的可行性。采用Harvest石油平台验潮站、1890000号验潮站和21419号深海压力仪,计算了Jason-3测量海面高偏差以及Jason-2、Jason-3海面高之间的相对偏差。由3种设备得到的Jason-3海面高偏差序列的标准差分别为3.98、2.87、8.61 cm,Jason-2、Jason-3海面高之间的相对偏差(Jason-3—Jason-2)分别为-3.62±2.17、-2.58±1.97、-2.60±1.30 cm,与国外定标站计算结果相比较,结果表明:Jason-3海面高相比于Jason-2海面高低约3.0 cm;选用的深海压力仪适合用于Jason-2、Jason-3之间海面高相对偏差的计算,但不适用于单颗卫星的定标或性能评估;远海孤岛验潮站适用于两者。
Independent of traditional approach of satellite altimeter calibration, the feasibility of altimeter validation using tide gauge located on solitary island at open sea (TGSI) and deep-ocean bottom pressure recorder (BPR) separately is initially studied. Bias of Jason-3 sea surface height (SSH) and relative SSH bias (Δ bias ) between Jason-2 and Jason-3 is calculated using the data of tide gauge on Harvest oil platform, tide gauge No.1890000 and BPR No.21419. The standard deviations of calculated SSH bias sequence are 3.98 cm, 2.87 cm and 8.61 cm respectively, and Δ bias (Jason-3-Jason-2) is -3.62±2.17 cm,-2.58±1.97 cm and -2.60±1.30 cm respectively. Comparing to the results reported by foreign calibration sites, the results show that Jason-3 SSH is 3.0 cm lower than that of Jason-2. The selected BPR is appropriate to the calculation of relative SSH bias between Jason-2 and Jason-3, but it is not suitable for calibration or validation of single satellite. TGSI is appropriate to both.
作者
管斌
孙中苗
刘晓刚
翟振和
GUAN Bin;SUN Zhongmiao;LIU Xiaogang;ZHAI Zhenhe(State Key Laboratory of Geo-information Engineering,Xi’an 710054,China;Institute of Geography Spatial Information, Information Engineering University, Zhengzhou 450052,China;Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China)
出处
《测绘学报》
EI
CSCD
北大核心
2019年第2期161-168,共8页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(41774018
41674082)
地理信息工程国家重点实验室自主研究课题(SKLGIE2018-ZZ-4)~~
关键词
卫星测高
高度计定标
验潮站
海啸深海评估与预警
相对偏差
压力仪
satellite altimetry
altimeter calibration
tide gauge
deep-ocean assessment and reporting of Tsunamis
relative bias
pressure recorder
