摘要
GPS卫星定位技术,是开展海洋综合测绘的一种高效手段;如何在海洋测绘中充分发挥GPS技术精确快速定位的特长,是值得我们认真研究的重大课题。为此,本文较详细地论述了以下几个问题。1.根据边长和动静定位需要,选购适宜的GPS信号接收机;2.从海洋国土整体着眼,精心设计GPS海洋定位网的全网结构;为便于评定GPS数据质量,宜采用闭合环路式结构;3.正视SA技术对实时定位精度的损失,运用求差法削弱SA技术的影响。
GPS satellite positioning is an efficient way for accurately surveying and mapping at sea.How the advantage on precise and quick positioning by means of GPS receivers is wholly revealed at sea is worthy to be di- scussed in detail. Therefore, this paper has proposed the following opini- ons: ——to select suitably GPS receivers according to long interstation di- stances and requirements for static and/or kinematic positioning; ——to design elaborately the GPS network configuration, first planning out the network loop (NETL) that can cover the whole surveying distri- ct, secondly dividing NETL into some subloop (SUBL) , so as to survey one by one by means of GPS receivers; ——to use differential GPS technology to decrease an effect of selecti- ve availability technique on positioning accuracies.
出处
《海洋技术》
1992年第1期7-17,共11页
Ocean Technology
关键词
GPS卫星定位
海洋
测绘
GPS receiver
GPS Satellite Positioning
Selective availability technique