摘要
本文介绍了二次水声定位系统的系统构成、定位原理和整个系统控制流程,详细剖析了二次水声定位过程中产生的GPS测量系统误差、天线相位中心天顶坐标系下的三维改正、GPS系统和发射/接收换能器位置引起的误差、定位流程和时间延迟误差、声速计算中存在的误差等,从其大小和方向等方面进行定性和定量研究,给出了减小和消除各种误差,进而提高定位精度的方法。
The paper introduced the system construction,positioning principle and control flow of secondary acoustic positioning system,analyzed in detail the error of GPS measuring system produced in the process of secondary acoustic positioning and 3-D correlation in the zenith coordinate system of antenna phase center,the error resulted from GPS system and transmitting/receiving transducer position,positioning flow and time-delay error and error existed in computation of acoustic velocity,implemented qualitative and quantitative study on their size and direction and gave the methods reducing and eliminating various errors and thus further improving positioning precision.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2009年第2期136-139,共4页
Oil Geophysical Prospecting
