A Precise Point Positioning (PPP) is performed using the ERPs, SP3 orbits, and satellite clocks from the IGS Final/Rapid combination as well as from the individual contributing Analysis Centers. Clocks and RINEX observations are decimated to 5-min intervals.

Over the past decade, PPP ambiguity resolution (PPP-AR) has been well studied by the GNSS community, and the IGS established the PPP-AR Working Group (WG) in 2018. The goal of …

2022年1月23日 · 超快速产品IGU虽然能实时得到，但由于其预报 钟差精度较低，不能满足PPP的需求。为此，IGS 从2013－04－01起正式运行实时实验计划[1]，利用全 球GNSS跟踪站观测数据实时生成包含基于广播 星历的卫星轨道和钟差改正数，采用...

• Recent progress of IGS ACs’ PPP-AR products over the past year • One-year results of the routine PPP-AR product combination (Qiang Wen) • Introduction of the HUM PPP-AR products (Xiang Guo) • Preliminary assessment of ACs’ 24:00:00 epoch products for addressing the day-boundary discontinuity issue (Qiang Wen) 2 Outline

2022年1月24日 · 精密单点定位（PPP，Precise Point Positioning）是一种高级的全球导航卫星系统（GNSS）定位技术，它能够提供亚米甚至厘米级的定位精度。该技术在多个领域具有广泛应用，包括国土测绘、资源调查、环境监测、交通管理...

2022年8月5日 · IGS数据下载，不用在IGS的ftp服务器上一个个找，软件可以一键下载观测数据、导航电文、精密星历、钟差数据、地球自转、以及一键下载GAMIT基线解算所需要表文件，不用一个个去网站更新

2022年6月24日 · In this article, SSR products from 10 analysis centers are comprehensively evaluated by comparing them with the final products and performing the kinematic PPP. The results show that analysis centers CNES (Centre National D'Etudes Spatiales) and WHU (GNSS Research Center of Wuhan University) provide the most complete products with the best quality.

本文利用可获取的IGS RTS产品进行车载动态PPP实验，以分析IGS RTS产品在实时动态PPP中的表现。 IGS实时服务产品的生成过程分为3个步骤。 1) IGS分析中心生成分析中心产品，并采用NTRIP协议实时向用户播发。 2) 组合中心接收各分析中心广播的产品进行组合，得到组合产品后实时向用户播发。 3) 用户通过NTRIP协议既可以获取分析中心的产品，也可以获取组合产品。 这种服务结构可以有效避免某个或某些分析中心产品中断而产生的服务中断，可以为用户提供较为 …

2024年6月5日 · We therefore propose a concept of “frequency-specific integer clock” where all third-frequency phase biases are integrated individually with satellite clocks to enable an efficient frequency-wise combination. The resultant combined product will ensure all-frequency PPP ambiguity resolution over any frequency choices and observable combinations.

2020年1月3日 · Techniques enabling precise point positioning with ambiguity resolution (PPP-AR) were developed over a decade ago. Several analysis centers of the International GNSS Service (IGS) have implemented such strategies into their software packages and are generating (experimental) PPP-AR products including satellite clock and bias corrections.