多波束XTF格式数据航向信息重写入实例  

A case study for rewriting gyro data in multibeam XTF file

作　　者：丁维凤[1] 冯霞[2] 傅晓明[1] 叶连春[1] 杨根新[1] 

机构地区：[1]国家海洋局第二海洋研究所,浙江杭州310012 [2]杭州职业技术学院信息电子系,浙江杭州310018

出　　处：《海洋通报》2011年第1期1-6,共6页Marine Science Bulletin

基　　金：国家海洋局第二海洋研究所基本科研业务费专项资助项目(SZ0812);中国海洋大学海底科学与探测技术教育部重点实验室资助项目(2008-05)

摘　　要：以多波束实际调查数据为例,分析与讨论无航向角的RESON SeaBat 8101er系统XTF格式多波束数据处理问题,提出从Hypack导航软件输出的RAW文本数据中提取电罗经航向与时间数据,经时间匹配与插值处理后重新写进XTF数据文件内。实现时在没有明确的XTF数据格式说明的情况下,通过二进制数据位的系统分析,确定罗经航向数据的位置和结构,使用自编程序实现航向数据重新写入原始XTF数据内,再经Caris软件精细处理后很好地解决了无航向数据处水深空白带的问题。Based on the long time field multibeam surveying,it is very possible for communicating line breaking off which connecting different devices,just as the gryo communicating line.As it was not found at time,the gyro heading data wasn＇t inputted to the multibeam XTF file.Generally it need to survey the no heading line again at spot,but it was not convenient when the working ship and device were whithdrawn from the spot,so processor must deal with the no heading XTF file using all potential methods.To the RESON Seabeat8101er outputting XTF file,the paper analyse the file＇s structure and search the heading variable bytes＇ location within the file＇s definition,and the paper discusses how to look for the heading data from another recording file and extract the heading data from Hypack navigation outputing RAW file,at last it studies the rewriting these heading data to the XTF file with flexible programming.All the methods are proved to be valid when processing XTF file of no heading data surveying line again and plotting the bathymetry.

关 键 词：多波束 航向数据 XTF 

分 类 号：P229.1[天文地球—大地测量学与测量工程] P209[天文地球—测绘科学与技术]