铁道学报
鐵道學報
철도학보
2014年
7期
101-105
,共5页
轨道控制网%严密平差搭接%坐标差异性检验%相对点位精度
軌道控製網%嚴密平差搭接%坐標差異性檢驗%相對點位精度
궤도공제망%엄밀평차탑접%좌표차이성검험%상대점위정도
track control network%rigorous adj ustment lapping%coordinate difference test%accuracy of relative positioning
基于统计检验理论，对CPⅢ区段搭接严密平差法进行了进一步的研究分析，提出了新的搭接点对选择方法-坐标差异性检验法，并阐述了该方法的数学模型。通过理论分析和实例验证表明：在 CPⅢ相邻区段搭接处理时，对搭接区段同名参数在前后两区段的测量平差值进行差异性检验，以此为基础选取搭接点对更为科学合理；在置信区间内的t(f)值越小，就越有理由认为坐标差异性不显著，当桩点的X、Y坐标差异性检验参数t (f)值均小于临界值时，可认为该点坐标没有明显差异，该点可作为搭接点，反之则不能；选取t(f)值较小的点作为搭接点，可以很好地实现相邻区段的平顺搭接。
基于統計檢驗理論，對CPⅢ區段搭接嚴密平差法進行瞭進一步的研究分析，提齣瞭新的搭接點對選擇方法-坐標差異性檢驗法，併闡述瞭該方法的數學模型。通過理論分析和實例驗證錶明：在 CPⅢ相鄰區段搭接處理時，對搭接區段同名參數在前後兩區段的測量平差值進行差異性檢驗，以此為基礎選取搭接點對更為科學閤理；在置信區間內的t(f)值越小，就越有理由認為坐標差異性不顯著，噹樁點的X、Y坐標差異性檢驗參數t (f)值均小于臨界值時，可認為該點坐標沒有明顯差異，該點可作為搭接點，反之則不能；選取t(f)值較小的點作為搭接點，可以很好地實現相鄰區段的平順搭接。
기우통계검험이론，대CPⅢ구단탑접엄밀평차법진행료진일보적연구분석，제출료신적탑접점대선택방법-좌표차이성검험법，병천술료해방법적수학모형。통과이론분석화실례험증표명：재 CPⅢ상린구단탑접처리시，대탑접구단동명삼수재전후량구단적측량평차치진행차이성검험，이차위기출선취탑접점대경위과학합리；재치신구간내적t(f)치월소，취월유이유인위좌표차이성불현저，당장점적X、Y좌표차이성검험삼수t (f)치균소우림계치시，가인위해점좌표몰유명현차이，해점가작위탑접점，반지칙불능；선취t(f)치교소적점작위탑접점，가이흔호지실현상린구단적평순탑접。
On the basis of the theory of statistical detection and further research was made on the method of rig-orous adj ustment lapping between adj acent of CPⅢ.The new lapping point selection-coordinate difference de-tection method was put forward.The mathematical model of this method was expounded.Theoretical analysis and case study show as follows:It is more scientific and rational to choose lapping pairs of points derived from coordinate difference detection;in the confidence interval,the smaller the value of t(f),the more reasons to be-lieve that the coordinate difference is not significant;if the t(f)values of both of the X&Y coordinate differences of a point are smaller than the threshold,it can be considered that no significant difference exists in the coordi-nates of the point and the point can be used as the bonding point,otherwise,it cannot be;selecting the point with a smaller value of t(f) as the bonding point can realize smooth laping of adj acent sections.
