Policy on Intellectual Property Right (IPR)
Annex 1 Procedures for TWSTFT
1 Introduction
2 Brief description of the exchanged signals
3 Causes of non-reciprocity and systematic uncertainty in TWSTFT
3.1 Non-reciprocity due to satellite equipment delays
3.2 Sagnac-effect correction
3.3 Path delay difference due to satellite movement in an Earth
fixed frame
3.4 Ionospheric correction
3.5 Tropospheric correction
3.6 Earth station delay measurement
4 Combination of TWSTFT measurement data with local measurements
5 Performance characteristics of the technique
6 TWSTFT operations in a network
6.1 Station identification and assigned characters, codes and
offset-frequencies
6.2 Session parameters
6.3 Local ground station parameters
7 Calibration of station delays
8 Calculation of clock differences
8.1 Introduction
8.2 Individual data
8.3 Combined data
Annex 2 Description of the data format for data exchange
1 Introduction
2 Report of the individual 1-s measurements
3 File format reporting results of a quadratic fit
3.1 General remarks
3.2 File name
3.3 Header
3.4 Data line
4 Examples
Example 1: Data line for reporting individual data, quadratic fit
Examples 2 and 3: Sample data files from a station in Europe (2) and in
United States of America (3)
Examples 4 and 5: Sample data files based on examples 2 and 3, but reporting
combined data (S = 5 and S = 6)