摘要
运用模糊信息优化理论(信息扩散估计)导出各项模型精度估算指标。利用近似t-检验构造模型精度判研依据,以判断模型的可靠性。以小东江坐标系统变换为实例,演示、验证了建模技术的可操作性。
Plane similar conversionis based on least squares estimation. If there are some errors in the surveying datum which are used for modeling, then the robustness of plane similar conversion model will not be guaranteed. Because of brainpower and robustness for parameter detecting, principle of information diffusion is naturally used for exploring the reliable model. In this paper, we deduce a series of statistics for scale and circumrotation angle during the course of modeling, bring forward a kind of reasonable method to judge model reliability by using approximate t-test, and last, we also demostrate the manipulation process of model reliability analysis by the example of Xiaodongjiang GPS metamorphose monitoring network.
出处
《测绘工程》
CSCD
2004年第1期5-8,共4页
Engineering of Surveying and Mapping
基金
国家高新技术研究发展计划(863计划)资助项目(2001AA135081)。
