利用测高卫星评估深海压力仪测深精度的方法  

Method for accuracy evaluation of depth measurements of deep-sea bottom pressure recorder utilizing satellite altimetry data

作　　者：管斌 孙中苗[1,2] 翟振和 刘晓刚[1,2] 马健 GUAN Bin;SUN Zhongmiao;ZHAI Zhenhe;LIU Xiaogang;MA Jian(State Key Laboratory of Geo-information Engineering,Xi'an 710054,China;Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China)

机构地区：[1]地理信息工程国家重点实验室,陕西西安710054 [2]西安测绘研究所,陕西西安710054

出　　处：《海洋测绘》2022年第1期10-13,40,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(42174001,41774018)。

摘　　要：针对深海压力仪高质量精度评定的需求,研究了利用海洋测高卫星数据对此进行评估的方法。利用测高卫星对海面高高精度测量的特性,以测高卫星过顶深海压力仪所在海域为前提,给出了通过测高卫星数据评估深海压力仪相对测深精度的原理。使用Jason-3卫星151弧段前51周期的测量数据,对21419号DART测站所使用深海压力仪的测量精度进行了实例计算,分析了不同情况下该方法的适用性。计算结果表明,21419号DART测站采用的Paroscientific Digiquartz 410K型压力传感器在近6 km的深海布设时,其海深相对变化测量精度约为10.18 cm(1σ),该方法适用于深海压力仪的精度评定。According to the demand for high-quality accuracy evaluation of Deep-sea Bottom Pressure Recorder(DBPR),the evaluation method utilizing ocean altimetry satellite data is studied.Based on the advantage that the precision of sea surface height measured by altimetry satellite is relatively higher,given the precondition that altimetry satellite flys over the area where DBPR is deployed,the principle of evaluating the precision of the relative water height measured by DBPR using the synchronous observations of altimetry satellite is proposed.Using the first 51 cycles’data of pass 151 of Jason-3,the accuracy of DBPR from No.21419 of Deep ocean Assessment and Reporting of Tsunamis(DART)is calculated.Then,the applicability of this method is discussed under different conditions.The results show that,the relative accuracy of water height measurements from DBPR of type of Paroscientific Digiquartz 410 K which is set on DART No.21419 is about 10.18 cm(1σ),while it is settled at the depth of about 6 km.This method is suitable for the accuracy determination of BDPR.

关 键 词：卫星测高 海面高 深海压力仪 压力传感器 海啸深海评估与预警 

分 类 号：P228.3[天文地球—大地测量学与测量工程]