Reduced domestic satellite orbital spacings at 4/6 GHz

The technical basis for satellite orbit spacing intersystem interference is examined. Several complex mathematical analyses of intersystem isolation and signal interactions are reported. As such, this report is addressed to the rather small community of communications engineers that concerns itself with intersystem interference. Compilations of equations, U.S. domestic satellite system characteristics, and signal parameters that are important in interference analysis and system design are included. Also included are two computer programs that implement intersystem interference models.