Extension of JTIDS Capability via Synchronous Satellite Repeater

Abstract

An approach for extending the JTIDS capability beyond LOS by use of a synchronous satellite relay is described. The concept of a satellite relay introduces certain immediately apparent operational advantages over airborne relays. However, a requirement that the satellite relay be transparent to the basic JTIDS waveform, i.e., same carrier frequency and modulation, introduces some unique satellite repeater design problems. These problems, and their associated system design trade-offs, are discussed along with a potentially feasible design solution. Also, since the JTIDS TDMA format is designed for LOS propagation times, some unique network timing and control problems are introduced by the utilization of a synchronous satellite relay. Therefore, solutions which are transparent to the basic JTIDS waveform and terminal design, while compatible with a satellite network, are also discussed in the paper, along with a candidate baseline solution.