引用本文: 唐炳燮. 独立模型法区域网平差FORTRAN程序系统[J]. 武汉大学学报 ( 信息科学版), 1985, 10(3): 69-76.
Tang Bingxie. FORTRAN Program System of Block Adjustment by Method of Independent Models[J]. Geomatics and Information Science of Wuhan University, 1985, 10(3): 69-76.
 Citation: Tang Bingxie. FORTRAN Program System of Block Adjustment by Method of Independent Models[J]. Geomatics and Information Science of Wuhan University, 1985, 10(3): 69-76.

## FORTRAN Program System of Block Adjustment by Method of Independent Models

• 摘要: 微机的发展与普及,为航测内业加密作业提供了价格低廉的先进电算手段。本文设计的"独立模型法区域网平差FORTRAN语言程序"已在68000、VICTOR9000、PDP-11/23、Z-80D系统、VAX-750等新型电子计算机上实现。程序设计中充分利用了航摄仪中心投影的内在几何关系及数据间多余观测值的校核,增强了对原始数据的找错能力,根据立体模型坐标变换的基本理论,"程序"中摄测坐标系的变换、航线的拼接与单元模型坐标变换的误差方程式,都使用了统一的公式;根据独立模型法区域网平差的基本理论,以及大法方程式解算中带状稀疏对称正定矩阵的特点与FORTRAN语言的优点,因而减少了"程序"的行数、缩短了电算时间与减少反复平差迭代的次数;整个程序分六个程序段执行,可在小容量的微型机上增大平差区域的单元模型数。

Abstract: In this program system,the interior geometrical relationship of central projection and the abundance of observations are adequately ultilized so that its ability to detect primary data errors has been enhanced.Based on the fundamental principle of stereo-model coordinate transformation,unified formulas are used to transform the photogrammetric coordinate systems,to join the airstrips and to form the error equations of coordinate transformation of the independent models.Based on the principle of block adjustment by the use of independent models,the feature of band sparse symmetric positive definite matrix in solving large normal equations and the advantages of FORTRAN language,the lines of the computer program and the times of iteration for repeated adjustments have been greatly reduced in this program system.This program system is divided into 6 blocks.Recently it has been performed successfully on various computers such as Z-80,PDP 11/23,PERKIN ELMER OS/32,M一150,VICTOR 9000,VAX-11/750,68000 etc.

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