CONTENTS

Annex 1� Procedures for TWSTFT
�1���� Introduction
�2���� Non-reciprocity due to satellite equipment delays
�3���� Sagnac-effect correction
�4���� Non-reciprocity effects due to satellite movement in an earth fixed frame
�5���� Ionospheric correction
�6���� Tropospheric correction
�7���� Earth station delay measurement
�8���� Data processing
�9���� Determination of accuracy and stability of the result
10���� Performance characteristics of the earth station
Annex 2� Information on the data format for data exchange
�1���� Introduction
�2���� Required information
������� 2.1���� Station identification and assigned characters, codes and offset-frequencies
������� 2.2���� Session parameters
������� 2.3���� Local earth station(k) parameters
�3���� Data format
������� 3.1���� General
������� 3.2���� Report of the individual 1 s measurements
����������������� 3.2.1���� Type 1 � Individual measurements
����������������� 3.2.2���� Type 2 � Combined measurements
������� 3.3���� File format reporting results of a quadratic fit
����������������� 3.3.1���� General remarks
����������������� 3.3.2���� File name
����������������� 3.3.3���� Header
����������������� 3.3.4���� Data line
��������������� ��3.3.5���� Computation of clock differences
����������������� 3.3.6���� Examples
Appendix 1� to Annex 2
�1���� Data line
�1���� Data files
�2���� Computation of clock differences
�3���� Identification and description of satellite links
�4���� Identification and description of calibrations performed
Appendix 3� to Annex 2
�1���� Data line
Appendix 4� to Annex 2
Examples
�1���� Data files
�2���� Computation of clock differences
�3���� Identification and description of satellite links
�4���� Identification and description of calibrations performed