RECOMMENDATION ITU-R S.1325-2 - Simulation methodologies for determining statistics ...
ANNEX 1 - Methodology for determining statistics of short-term interference between ...
1 Method and simulation approach description
2 Simulation assumptions
2.1 Orbit model
2.2 Consideration of polarization isolation
2.3 Operational assumptions
2.4 Antenna parameters
2.5 Input data
2.6 Output data
2.7 Calculation of the total simulation time, simulation time increment and precession
ANNEX 2 - Methodology for determining statistics of codirectional, co-frequency interference levels between non-GSO FSS syste
1 Introduction
2 Interference scenario
3 Terminology
3.1 Earth related constants
3.2 Non-GSO satellite system space station related constants
3.3 GSO satellite network space station related constants
3.4 Earth station related constants
4 Interference computation
4.1 Step 1: Worst-case identification
4.2 Step 2: Interference calculations at worst case
5 Method to compute the aggregate interfering noise power from a single non-GSO system
5.1 Method to compute the interference on the uplink
5.2 Method to compute the interference in the downlink
ANNEX 3 - Description and example of computational methodology in Annex 1
1 Introduction
2 Description of computation methodology
2.1 Block A - Constellation selection and set-up
2.2 Block B - Initialize program constants
2.3 Block C - Position constellation to time t
2.4 Block D - Check visibility of satellites (interfering and wanted)
2.5 Block E - Compute I0/N0 or epfd for all interference paths
2.6 Accounting for the aggregate impact of multiple earth stations/satellites on the interference levels
2.7 Expressions of interference in terms of epfd? and epfd?
3 Example of non-GSO and GSO interference methodology
3.1 Validation of interference results
ANNEX 4 - Continuing work programme