Real-Time PPP Demonstration campaign

Introduction

The RT Demonstration campaign (RT-Demo) is organized by Working Group 1 "Advanced GNSS Tropospheric Products" of the COST ES1206 Action (GNSS4SWEC, "Advanced Global Navigation Satellite Systems tropospheric products for monitoring severe weather events and climate"). The campaign was designed in 2014 and officially started in April 1, 2015.

Contributing Analysis Centres (ACs) are requested to generate tropospheric products - zenith total delays and, optionally, linear horizontal gradients - in real-time or sub-hourly fashion, with a 5-minute temporal resolution for all parameters and predefined 32 stations partly in Europe and in global. Tropospheric products, including relevant meta data, should be converted into the COST-716 format and uploaded on hourly bases to FTP server at Geodetic Observatory Pecny (GOP).

The strategy for tropospheric estimation is generally free and should be as much as optimized with respect to individual software capability and the state-of-the-art knowledge. The same deals with the precise models, such as IERS conventions, antenna phase offsets and variations, a priori tropospheric model, mapping functions, and others. The use of GPS system is mandatory while other GNSS constellations are optional. In order to guarantee a consistency of GPS+GLONASS products and facilitate comparisons of results from all ACs, it was agreed to use IGS03 stream for real-time precise orbit and clock products provided by the International GNSS Service (IGS).

Full details on instructions are available in the design documentation of the RT-Demonstration campaign, avalable here.

Contributing ACs

Table summarized current contributions to the campaign, however, also NWM-based tropospheric models using weather forecasts available in real-time.

Evaluation of tropospheric products

Information on routine product sources (using selected stations)

(12 rows)

(16 rows)

(17 rows)

(17 rows)

(16 rows)