惯导GNSS-RTK可靠性及精度损失规律分析  

Analysis of the Law of Reliability and Precision Loss of Inertial Navigation GNSS-RTK

作　　者：任续超 姚睿 REN Xuchao;YAO Rui(Shaanxi Energy institute,Xianyang 712000,China)

机构地区：[1]陕西能源职业技术学院,陕西咸阳712000

出　　处：《城市勘测》2022年第4期108-112,共5页Urban Geotechnical Investigation & Surveying

摘　　要：基于探讨惯导RTK在实际测量工作中精度可靠性的目的,采用对比及线性回归分析方法,结合惯导RTK对已知控制点进行倾斜测量的实测数据,分别探讨倾斜角度、杆高以及倾斜方向对测点平面精度和高程精度的影响,得出了惯导RTK倾斜测量的精度主要受倾斜偏距的影响,且偏距对测点平面和高程精度均基本符合线性增长关系,但对高程精度的影响相比要小,且倾斜方向为正南或正北方向时测点精度才会符合一定的规律性,在实际测量中倾斜南北方向更有利于控制测点精度的结论。Based on the purpose of discussing the accuracy and reliability of the inertial navigation RTK in actual measurement work,the method of comparison and linear regression analysis is used,combined with the measured data of the inertial navigation RTK’s tilt measurement of known control points,and the tilt angle,pole height and tilt direction are discussed separately on the influence of the plane accuracy and elevation accuracy of the measurement point,it is concluded that the accuracy of the inertial navigation RTK tilt measurement is mainly affected by the tilt offset,and the offset has a linear growth relationship for the plane and elevation accuracy of the measurement point,but it has a linear increase in the elevation accuracy.The influence of the measurement point is relatively small,and the accuracy of the measurement point will conform to a certain regularity when the tilt direction is true south or true north.In actual measurement,tilting the north-south direction is more conducive to the conclusion that the accuracy of the measurement point is controlled.

关 键 词：惯导RTK 倾斜测量 倾斜偏距 点位精度 

分 类 号：P228[天文地球—大地测量学与测量工程]