海洋测绘2017，Vol.37Issue(5)：48-51,4.DOI:10.3969/j.issn.1671-3044.2017.05.010
利用高程基准模型实时获取海拔高技术研究
Research of High-precision Altitude Real-time Acquisition Technology Using Digital Elevation Reference Model
摘要
Abstract
Elevation information is an important part of time and space position.Real-time acquisition of high-precision elevation is one of the key steps in mapping navigation information.The navigation terminal of Beidou Navigation Satellite System can quickly and efficiently determine the geodetic high,and also can obtain real-time precise elevation combing with high-precision digital elevation model.Based on the vertical deviation between the National Height Datum 1985 and the Global Height Datum,this paper constructs a regional digital elevation datum model unified into the CGCS 2000 ellipsoid using GOCE + EGM08 gravity field model.The model range corresponds to the BDS service area,namely 55 degrees south latitude to 55 degrees north latitude and 55 degrees east longitude to 180 degrees east longitude.The model accuracy is better than meter level,which meets the requirement of using BDS navigation terminal on application of high altitude requirements.Based on real-time SQLITE database technology,and digital height datum model,a real-time elevation access system using BDS navigation terminal is built to achieve real-time precise elevation at any point.关键词
海拔高程/高程基准模型/重力场模型/实时SQLITE数据库嵌入技术/北斗导航终端Key words
elevation/digital elevation reference model/gravity field model/real-time SQLITE database embedding technology/Beidou navigation terminal分类
天文与地球科学引用本文复制引用
王伟平,秦宇博,邓凯亮,黄辰虎,李凯锋,陈欣..利用高程基准模型实时获取海拔高技术研究[J].海洋测绘,2017,37(5):48-51,4.基金项目
国家重点研发计划(2016YFC0303007,2016YFB0501704) （2016YFC0303007,2016YFB0501704）
国家自然科学基金(41706111、41474012,41174062,41374018):国家重大科学仪器设备开发专项(2011YQ12004503) （41706111、41474012,41174062,41374018）
国防973计划(613219). （613219）
