重力辅助导航高斯插值精化算法  

Gravity Aided Navigation Precise Algorithm with Gauss Spline Interpolation

作　　者：文超斌[1,2] 王跃钢[1] 郭志斌[1] 田琦[1] 左朝阳 蒋新磊 

机构地区：[1]第二炮兵工程大学 [2]中国人民解放军96124部队

出　　处：《测绘学报》2015年第1期13-18,共6页Acta Geodaetica et Cartographica Sinica

基　　金：国防预研基金(103030203)~~

摘　　要：为克服高精度的重力辅助导航传统模型的局限,必须考虑模型误差方程中的重力精化补偿问题.本文在研究二维高斯样条插值函数逼近局部重力异常场的基础上,提出了一种重力辅助导航精化模型构建算法.该精化模型补偿了重力扰动矢量、标准重力模型误差、厄特弗斯修正计算值对导航模型的影响.试验结果表明,利用本文的新型重力辅助导航模型构建算法可使辅助导航系统定位精度提高1倍左右,姿态、速度精度提高1-2倍,定位误差保持在100-200m.The gravity compensation of error equation thoroughly should be solved before the study on gravity aided navigation with high precision .A gravity aided navigation model construction algorithm based on research the algorithm to approximate local grid gravity anomaly filed with the 2D Gauss spline interpol ation is proposed .Gravity disturbance vector ,standard gravity value error and Eotvos effect are all compensated in this precision model .The experiment result shows that positioning accuracy is raised by 1 times ,the attitude and velocity accuracy is raised by 1~2 times and the positional error is maintained from 100~200 m .

关 键 词：重力辅助导航 高斯样条插值 重力误差补偿 导航模型 

分 类 号：P229[天文地球—大地测量学与测量工程]