CAJ | 학술논문

在GPS单点定位中，接收机天线的相位中心的位置偏差会对定位精度产生一定的影响，而多种方法可以削弱此类影响。本文通过对相位中心偏差的直接改正、最小二乘改正以及残差和为零的最小二乘改正三种常用改正方法进行对比研究，结果表明应用残差和为零的最小二乘修正的定位偏移量最小，能更好地削弱天线相位中心偏差对定位精度的影响。
재GPS단점정위중，접수궤천선적상위중심적위치편차회대정위정도산생일정적영향，이다충방법가이삭약차류영향。본문통과대상위중심편차적직접개정、최소이승개정이급잔차화위령적최소이승개정삼충상용개정방법진행대비연구，결과표명응용잔차화위령적최소이승수정적정위편이량최소，능경호지삭약천선상위중심편차대정위정도적영향。
In GPS single point positioning ,phase center offset of the receiver antenna has some influence on the pre-cision of positioning , however , a few methods could weaken this influence .In this paper , three common methods that could weaken the influence are compared ,including the method of direct correction of the phase center ,the least squares criterion correction and the least squares correction based on zero total residual difference .It is shown in the simulation that the positioning error achieves minimum under the method of least squares correction based on zero total residual difference,therefore the influence on the positioning precision caused by phase center offset is better weakened .