基于RTS的海上实时精密单点定位精度分析  

Accuracy Analysis of Marine Real-time Precise Point Positioning with RTS Products

作　　者：范士杰 华亮 臧建飞 陈冠旭[2] 秦学彬 

机构地区：[1]中国石油大学地球科学与技术学院,山东青岛266580 [2]武汉大学测绘学院,湖北武汉430072 [3]东方地球物理公司大港物探处测量设备服务中心,天津300280

出　　处：《海洋测绘》2017年第3期21-24,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41274011)

摘　　要：组织实施了连续一周的渤海湾船载动态GPS定位试验,对BNC软件客户端接收的IGS实时数据流4种综合产品(IGC01、IGS01、IGS02和IGS03)的数据可用性和精度进行了验证;对基于RTS改正的船载实时精密单点定位的精度进行了分析。结果表明,4种RTS产品的数据可用率均在90%以上,其中IGS01的数据可用率最高为97.68%;以IGS最终精密星历和钟差产品为参考,4种RTS轨道产品在X、Y、Z方向的精度(RMS)均优于4cm,钟差产品的精度(STD)优于0.2ns;以采用IGS最终精密星历和钟差产品的事后PPP结果为参考,基于RTS的船载RTPPP的水平方向精度优于7cm,高程方向精度为12cm,三维位置精度约为15cm。In this paper,an experiment is conducted to perform the ship-borne kinematic GPS positioning in the Chinese Bohai gulf for one week. We verify the data availability and accuracy of four IGS real-time service( RTS) products,i.e.IGC01,IGS01,IGS02 and IGS03,received by BNC software.The precision of ship-borne GPS real-time precise point positioning( RT-PPP) with RTS products is analyzed. The results showthat: the availability of four RTS products is all above 90% and IGS01 product has the highest availability of 97.68%.Comparison with IGS final precise orbit and clock products proves the root mean square( RMS) of four RTS orbit products is all better than 4 cm in X,Y and Z directions,and the standard deviation( STD) of four RTS clock products is 0.2ns. Contrasting to the result of post-processing precise point positioning( PPP) with IGS final products,the RMS of the aforementioned RT-PPP is no more than 7 cm for the horizontal coordinate component,12 cm for the geodetic height and 15 cm for three-dimensional position.

关 键 词：IGS 实时数据流 精密卫星星历和钟差 实时精密单点定位 数据可用率 精度分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]