| 几种CPⅢ精密三角高程控制网平差方法对比研究 |
| |
| 引用本文： | 李建章.几种CPⅢ精密三角高程控制网平差方法对比研究[J].测绘工程,2020(3):5-8,14. |
| |
| 作者姓名： | 李建章 |
| |
| 作者单位： | 兰州交通大学测绘与地理信息学院;地理国情监测技术应用国家地方联合工程研究中心;甘肃省地理国情监测工程实验室 |
| |
| 基金项目： | 国家自然科学基金资助项目(41661091);兰州交通大学优秀平台支持(201806)。 |
| |
| 摘 要： | 目前还难以完全利用精密三角高程代替精密水准建立CPⅢ高程控制网。文中对几种CPⅢ精密三角高程控制网平差方法进行研究对比,并通过仿真数据和现场实测数据进行试验。研究表明:系统性误差依然是制约CPⅢ精密三角高程控制网精度进一步提高的主要因素;传统差分法能较好地解决垂线偏差影响;参数法精度最高,可以有效地消除球气差的影响,但其中包含的垂线偏差影响不容忽略,需要做进一步的研究。
|
| 关 键 词： | CPⅢ高程控制网 精密三角高程 球气差 垂线偏差 |
Comparative study on adjustment models of several CPIII precision triangular elevation control networks |
| |
| LI Jianzhang.Comparative study on adjustment models of several CPIII precision triangular elevation control networks[J].Engineering of Surveying and Mapping,2020(3):5-8,14. |
| |
| Authors: | LI Jianzhang |
| |
| Institution: | (Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;National-local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China) |
| |
| Abstract: | At present,it is difficult to establish CPIII elevation control network completely using precision triangular elevation instead of precise leveling.In this paper,several adjustment models of CPIII precise trigonometric elevation control network are studied and compared,and experiments are carried out with simulation data and field measured data.The result shows that the systematic error is still the main factor restricting the further improvement of the precision of CPIII precise trigonometric elevation control network;the traditional difference method can better solve the influence of vertical deviation;the parametric method has the highest accuracy and can effectively eliminate the influence of balloon difference,but the influence of vertical deviation can not be ignored,and further research is needed. |
| |
| Keywords: | CPⅢleveling control network precision trigonometric leveling earth curvature and atmospheric refraction vertical deflection |
| 本文献已被 CNKI 维普 等数据库收录！ |
