参数法CPⅢ精密三角高程控制网数据处理方法

doi:10.11947/j.AGCS.2019.20180265

测绘学报 ›› 2019, Vol. 48 ›› Issue (4): 431-438.doi: 10.11947/j.AGCS.2019.20180265

参数法CPⅢ精密三角高程控制网数据处理方法

李建章^1,2, 闫浩文^1,2

1. 兰州交通大学测绘与地理信息学院, 甘肃兰州 730070;
2. 甘肃省地理国情监测工程实验室, 甘肃兰州 730070

收稿日期:2017-06-07 修回日期:2018-10-08 出版日期:2019-04-20 发布日期:2019-05-15
通讯作者: 闫浩文 E-mail:haowen2010@gmail.com
作者简介:李建章(1974-),男,博士生,副教授,研究方向为高速铁路控制网数据处理。E-mail:13919054839@163.com
基金资助:
国家自然科学基金（41661091）

Parameter method data processing for CPⅢ precise trigonometric leveling network

LI Jianzhang^1,2, YAN Haowen^1,2

1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China

Received:2017-06-07 Revised:2018-10-08 Online:2019-04-20 Published:2019-05-15
Supported by:
The National Natural Science Foundation of China (No. 41661091)

摘要/Abstract

摘要： 针对差分法的局限性，提出了参数法CPⅢ精密三角高程控制网平差模型。试验证明，该模型算法简单、数据利用率高，避免了差分法观测值之间的相关性等问题，精度也较差分法有所提高。同时本文也对CPⅢ精密三角高程控制网严密定权问题进行了探讨，试验证明，在竖直角小于3°的情况下，三角高程测距误差的影响可忽略不计，因此严密定权前后CPⅢ精密三角高程控制网精度未有显著变化。

关键词: CPⅢ高程控制网, 精密三角高程, 参数法, 最小范数二次无偏估计

Abstract: In view of the limitation of the difference method, a parameter CPⅢ adjustment method is proposed for precision trigonometric elevation network. The result proves that the proposed method, being simple, efficient and time-saving, avoids the negative influences caused by the correlation among the data acquired from the difference method, and thus improves the accuracy. In addition, the study is conducted about strict weight of the CPⅢ precision trigonometric elevation network. The result shows that when the vertical angle is smaller than 3°, the ranging error of trigonometric leveling can be dismissed, and the accuracy of CPⅢ precision triangulation elevation control network does not change significantly before and after strict weight determination.

Key words: CPⅢ leveling control network, precise trigonometric leveling, parameter method, minimum norm quadratic unbiased estimate

中图分类号:

P207

李建章, 闫浩文. 参数法CPⅢ精密三角高程控制网数据处理方法[J]. 测绘学报, 2019, 48(4): 431-438.

LI Jianzhang, YAN Haowen. Parameter method data processing for CPⅢ precise trigonometric leveling network[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(4): 431-438.

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参数法CPⅢ精密三角高程控制网数据处理方法

Parameter method data processing for CPⅢ precise trigonometric leveling network

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