测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2015年
4期
190-192
,共3页
谢孟利%王石岩%张巧茹%柴永平
謝孟利%王石巖%張巧茹%柴永平
사맹리%왕석암%장교여%시영평
观测权%方差分量估计%单位权中误差%点位中误差
觀測權%方差分量估計%單位權中誤差%點位中誤差
관측권%방차분량고계%단위권중오차%점위중오차
observing weight%variance component estimation%mean square of weight%point square error
在处理边角网平差时,由于测边、测角相互独立,通常只能根据经验按观测类型不同进行验前方差估计,不能准确确定测边、测角观测量的权,影响了控制网的精确度。以高铁铺轨控制网( CPIII )数据处理为例,采用方差分量估计方法对控制网进行了数据处理和精度分析,并与等权处理方法做了比较,对边角网或其它不同类型的复杂控制网数据处理具有一定的参考价值。
在處理邊角網平差時,由于測邊、測角相互獨立,通常隻能根據經驗按觀測類型不同進行驗前方差估計,不能準確確定測邊、測角觀測量的權,影響瞭控製網的精確度。以高鐵鋪軌控製網( CPIII )數據處理為例,採用方差分量估計方法對控製網進行瞭數據處理和精度分析,併與等權處理方法做瞭比較,對邊角網或其它不同類型的複雜控製網數據處理具有一定的參攷價值。
재처리변각망평차시,유우측변、측각상호독립,통상지능근거경험안관측류형불동진행험전방차고계,불능준학학정측변、측각관측량적권,영향료공제망적정학도。이고철포궤공제망( CPIII )수거처리위례,채용방차분량고계방법대공제망진행료수거처리화정도분석,병여등권처리방법주료비교,대변각망혹기타불동류형적복잡공제망수거처리구유일정적삼고개치。
In the processing of side-angle network adjustment, we cannot determine the accurate weight of the measurements because of the independent between the side and angle measuring.Generally, we get the prior estimate of variance based on the experience and observation type, which will affect the accuracy of control networks.In this paper, the writer take the data of the high-speed railway control network as an example, and use the variance component estimation to process the measurements and analysis accuracy, then compare the result with that of the equal weight method.This thesis has something referential value for the studying of processing of di-rection-distance or other complicated control networks.