无线电工程
無線電工程
무선전공정
Radio Engineering
2015年
12期
59-63
,共5页
张杰%范生宏%刘昌儒%石磊%管乐鑫
張傑%範生宏%劉昌儒%石磊%管樂鑫
장걸%범생굉%류창유%석뢰%관악흠
后方交会%精度%分析%像点坐标
後方交會%精度%分析%像點坐標
후방교회%정도%분석%상점좌표
space resection%precision%analysis%image point coordinates
单像空间后方交会是摄影测量计算三维坐标的关键步骤,有着严密且复杂的数学公式,其内部参数及外部环境都会成为交会精度的影响因素。针对目前单像空间后方交会求解方法研究较多,而精度评价方面研究较少的现状,通过对单像空间后方交会理论进行分析,寻找影响交会精度的影响因素,设计各种情况的后方交会实验,着重研究了像点坐标、物方点坐标、控制场大小和摄影距离对交会精度的影响。通过实验研究得出这几种影响因素对交会精度的影响大小和影响趋势,对于实际工程应用中提高单像空间后方交会精度具有一定的指导意义。
單像空間後方交會是攝影測量計算三維坐標的關鍵步驟,有著嚴密且複雜的數學公式,其內部參數及外部環境都會成為交會精度的影響因素。針對目前單像空間後方交會求解方法研究較多,而精度評價方麵研究較少的現狀,通過對單像空間後方交會理論進行分析,尋找影響交會精度的影響因素,設計各種情況的後方交會實驗,著重研究瞭像點坐標、物方點坐標、控製場大小和攝影距離對交會精度的影響。通過實驗研究得齣這幾種影響因素對交會精度的影響大小和影響趨勢,對于實際工程應用中提高單像空間後方交會精度具有一定的指導意義。
단상공간후방교회시섭영측량계산삼유좌표적관건보취,유착엄밀차복잡적수학공식,기내부삼수급외부배경도회성위교회정도적영향인소。침대목전단상공간후방교회구해방법연구교다,이정도평개방면연구교소적현상,통과대단상공간후방교회이론진행분석,심조영향교회정도적영향인소,설계각충정황적후방교회실험,착중연구료상점좌표、물방점좌표、공제장대소화섭영거리대교회정도적영향。통과실험연구득출저궤충영향인소대교회정도적영향대소화영향추세,대우실제공정응용중제고단상공간후방교회정도구유일정적지도의의。
The single image space resection is a key step in photogrammetry to calculate 3D coordinates,it has a close and com?plicated mathematical formula,and is susceptible by its internal parameters and external environment.At present,there are more studies on resection solving methods but fewer studies on precision evaluation.This paper studies the factors that influence the resection preci?sion based on single image space resection theory analysis, and designs resection experiments for various situations. The influence of image point coordinates,object space point coordinates,control field size and photogrammetric distance on resection precision is studied in detail.The influence degree and trends of those influence factors on resection precision are obtained from experiments,which has some guiding significance for improving the precision of single image space resection in practical engineering applications.