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首页> 外文会议>Saint Petersburg International Conference on Integrated Navigation Systems; 20030526-28; St.Petersburg(RU) >CARRIER-PHASE CYCLE-SLIP DETECTION AND REPAIR FOR DUAL-FREQUENCY GPS DATA - NEW TECHNIQUE USING CORRELATION FILTERING PRINCIPLE
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CARRIER-PHASE CYCLE-SLIP DETECTION AND REPAIR FOR DUAL-FREQUENCY GPS DATA - NEW TECHNIQUE USING CORRELATION FILTERING PRINCIPLE

机译：双频GPS数据的载波相位循环滑移检测和修复-基于相关滤波原理的新技术

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摘要

A new version of the procedure of postprocessing for detection, estimation and repair of carrier-phase slips of dual-frequency GPS-observations performed both in static and in kinematic modes is proposed. The procedure uses a set of five linear "geometry-free" combinations of L1 and L2 code and carrier-phase observations and includes three stages of processing; detection, estimation and identification of "big" (more than ten cycles) carrier-phase slips; detection and estimation of "small" (one or several cycles) slips, repair of observations; multipath estimation in code observations, detection and elimination of abnormal "outliers" etc. The important distinctive peculiarity of the proposed method of processing is using the principle of correlation filtering of code and carrier-phase linear combinations for detection and estimation of "small" carrier-phase slips. The developed experimental software is adjusted to processing the observations of permanent reference stations, however, it can be adapted for processing the GPS data from dynamic objects, right up to low earth orbit satellites. The proposed method is universal: as it was worked out for processing the "zero" differences of dual-frequency observations of permanent reference stations it allows to realize by analogy the processing of single and double differences of observations (between receivers and satellites).
机译：提出了一种新版本的后处理程序，用于检测，估计和修复在静态和运动模式下进行的双频GPS观测的载波相位滑移。该过程使用L1和L2码与载波相位观测的五个线性“无几何”组合的集合，包括三个处理阶段。检测，估计和识别“大”（十个周期以上）载波相位滑移；检测和估计“小”（一个或几个周期）的漏失，修复观察结果；代码观察中的多径估计，异常“离群值”的检测和消除等。所提出的处理方法的重要特征是利用代码的相关滤波原理和载波相位线性组合来检测和估计“小”载波相滑移。调整了开发的实验软件，以处理永久参考站的观测数据，但是，该软件也可以用于处理从动态物体到低地球轨道卫星的GPS数据。所提出的方法是通用的：因为它被用于处理永久参考站的双频观测值的“零”差，所以它可以通过类比实现观测值的单差和双差（在接收机和卫星之间）。

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