摘要
本文分析了罗兰C单台链双曲线位置线的GDOP的几何运算过程,运用MATLAB工具仿真南海(15°N,108°E)到(23°N,116°E)区域几何精度因子分布。仿真结果表明:"长河二号"系统在南海大部分海区定位误差较小,但是在(15°N,108°E)到(23°N,110°E)附近海区GDOP值较大,说明了在近海岸线区域由于台链几何分布导致不能定位的原因。
This paper analyzes the GDOP＇s geometric operations process of Loran C single-chain hyperbola line of position.Using MATLAB,it simulates GDOP distribution in the South China Sea from region 15 ° N,108 ° E to region 23 ° N,116 ° E.Simulation results show that ＂Chang He-II＂ system in the South China Sea positioning error is small,but in the region from（15 ° N,108° E） to（23 ° N,110 ° E） near the sea GDOP value larger.This explains the reason that chains geometry distribution in the region near the coastline could lead to positioning failure.
出处
《船电技术》
2011年第1期30-33,共4页
Marine Electric & Electronic Engineering
