国防科技大学学报
國防科技大學學報
국방과기대학학보
JOURNAL OF NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
2014年
1期
34-40
,共7页
伪距单点定位%伪距单差%最小二乘方法%卫星导航
偽距單點定位%偽距單差%最小二乘方法%衛星導航
위거단점정위%위거단차%최소이승방법%위성도항
single-point position%single-differenced pseudo-range%least square%GNSS
针对伪距单点定位解算中存在的两种定位模型的最小二乘解，给出了它们关于位置估计和定位精度等价性的推证过程。描述了伪距单点定位所采用的基本定位模型和单差定位模型，依据伪距观测值精度和单差基准分三种情况分别证明了两种模型的位置最小二乘解和定位精度是等价的，通过实测数据的定位解算验证了两种模型的等价性，并比较了两种模型的最小二乘算法的效率。
針對偽距單點定位解算中存在的兩種定位模型的最小二乘解，給齣瞭它們關于位置估計和定位精度等價性的推證過程。描述瞭偽距單點定位所採用的基本定位模型和單差定位模型，依據偽距觀測值精度和單差基準分三種情況分彆證明瞭兩種模型的位置最小二乘解和定位精度是等價的，通過實測數據的定位解算驗證瞭兩種模型的等價性，併比較瞭兩種模型的最小二乘算法的效率。
침대위거단점정위해산중존재적량충정위모형적최소이승해，급출료타문관우위치고계화정위정도등개성적추증과정。묘술료위거단점정위소채용적기본정위모형화단차정위모형，의거위거관측치정도화단차기준분삼충정황분별증명료량충모형적위치최소이승해화정위정도시등개적，통과실측수거적정위해산험증료량충모형적등개성，병비교료량충모형적최소이승산법적효솔。
For the least-square solutions of two positioning models in single-point position,the equivalence proving of position estimation and its precision is given.The basic positioning model and single-difference positioning model were described respectively,then the single-difference positioning model was arranged into three cases,and the least-square solution of each case was proved equal to that of basic positioning model. Finally,the equivalence of the two models was proved by processing the experiment data,and the efficiency of least-square arithmetic for the two models was compared with each other.
