CAJ | 학술논문

近年来，精密单点定位(PPP)模糊度固定技术不断发展，模糊度正确固定后可以提高短时间的定位精度。然而固定错误的模糊度，将引起严重的定位偏差，因此对 PPP 模糊度固定的成功率和可靠性进行研究很有必要。本文探讨了采用非差小数偏差(FCBs)改正的 PPP 模糊度固定方法；同时提出了一种分步质量控制的 PPP 部分模糊度固定(PAR)策略。通过欧洲 CORS 数据对该方法进行验证，结果表明：PPP 模糊度固定可以提高小时解静态 PPP 定位精度。同时，采用部分模糊度固定策略，能够有效控制未收敛模糊度影响，提高用户端 PPP 模糊度固定成功率。
근년래，정밀단점정위(PPP)모호도고정기술불단발전，모호도정학고정후가이제고단시간적정위정도。연이고정착오적모호도，장인기엄중적정위편차，인차대 PPP 모호도고정적성공솔화가고성진행연구흔유필요。본문탐토료채용비차소수편차(FCBs)개정적 PPP 모호도고정방법；동시제출료일충분보질량공제적 PPP 부분모호도고정(PAR)책략。통과구주 CORS 수거대해방법진행험증，결과표명：PPP 모호도고정가이제고소시해정태 PPP 정위정도。동시，채용부분모호도고정책략，능구유효공제미수렴모호도영향，제고용호단 PPP 모호도고정성공솔。
With the development of ambiguity resolution for precise point positioning (PPP)in recent years,it can improve positioning accuracy of PPP with short time observations since ambiguities can be fixed to right integers.However,unacceptable errors would be introduced into coordinate parameters if ambiguities are fixed to wrong integers.It’s necessary to investigate the rel iabi l ity and success rate of ambiguity-fixed PPP.This paper investigates PPP ambiguity fixing method based on zero-differenced fractional-cycle biases (FCBs).A partial ambiguity resolution (PAR)strategy based on cascaded qual ity control is proposed.Data sets from Europe CORS are used to val idate and demonstrate PAR strategy. Results have showed that PPP ambiguity fixing can improve positioning accuracy of hourly PPP solution. When the strategy of PAR is appl ied,the influence of un-convergence ambiguities can be control led efficiently and the success rate of PPP ambiguity fixing is improved.