测量方法──一种顾及二次项的非线性拟稳平差法

A Nonlinear Quasi-Stable Adjustment Method with Consoderation for The Second-Order Terms.

本文在线性拟稳平差基础上，引入非线性曲率度量立体阵的概念，利用非线性最小二乘的精确正交性条件方程，提出一种顾及二阶偏导数的非线性拟稳平差的新的计算公式。最终算例分析说明该方法的有效性及实用性。

the basis of the linear quasi-stable adjustment,and through introducing the concept of 3D array of nonlinear curvature measurement,a new formula for caculating nonlinear quasi-stable adjustment with consideration for the second-order terms is proposed by using the precise orthogonality condition equation for nonlinear least squares.The typical example cited in the paper well demonstrates the validity and practicality of proposed method.