摘要
针对区域参考框架受地质构造活动,区域水平运动具有同向性与异向性混叠的复杂特征,造成局部区域参考框架难以有效维持的问题,该文提出顾及板块运动异向性与局部稳定性的区域参考框架维持思路,该方法引入了局部特征点采用最小约束的方法削弱不同板块的相对运动造成区域参考框架的形变影响。以我国西南某区域的基准站网数据为实验对象,结果表明:该方法较传统方案可较好地减少板块运动对区域参考框架的影响,最大限度地保持了与原始观测量图形属性及已有图形空间关系的相似性,实现了区域参考框架坐标变化的平稳过渡。
Aiming at fiducial stations affected by tectonic movement,the complex characteristic of regional horizontal movements was aliasing of isotropic and anisotropic,it was difficult to maintain regional reference frame effectively,this study proposed the method of taking account of the anisotropy of plate motion and partial stability,a strategy of introducing local feature points with minimum constraint to reduce or weaken the effect of relative motion to reference frame caused by block different movement.The southwest region of China fiducial station network was selected for experimental analysis,the result showed that,compared with the traditional strategy,the method weakens the effect of anisotropy which was induced by plate motion,the similarity of the spatial relationship not only with the observed graph attribute,but also with the existing result were maintained to maximum extent,realized smooth transition of regional coordinate change.
作者
王斌
蒋光伟
孙洋洋
忽巍
马新莹
WANG Bin;JIANG Guangwei;SUN Yangyang;HU Wei;MA Xinying(Geodetic Data Processing Centre of Mininstry of Natural Resources,PRC,Xi’an710054,China;School of Geological Engineering and Geomatics,Chang’an University,Xi’an 710054,China)
出处
《测绘科学》
CSCD
北大核心
2022年第12期16-22,共7页
Science of Surveying and Mapping
基金
国家自然科学基金项目(41574003,41904040)
2019年度自然资源部高层次科技创新人才培养工程杰出青年人才资助项目(12110600000018003926)
陕西测绘地理信息局科级创新项目(SCK2020-05)
关键词
框架维护
板块运动
稳定性
最小约束
reference frame maintenance
plate motion
stability
minimum constraint
