Start Date

4-1984 8:00 AM

Description

Satellite communications networks have supplanted other over-the-horizon communications systems because of their high capacity and high reliability. A key characteristic of satellite communications systems is that all communication links within a network share a common transponder and thus have the potential for deleterious interactions. This in turn gives rise to the need for a network control function that can establish and ensure appropriate transmission characteristics for each terminal with the goal of maximizing the communications capacity available to all network members.

Because of the potential for electronic countermeasures in military satellite communications systems, an antijam mode of operations, which by its very nature is a reduced capacity mode, is often included in the network architecture. This in turn puts added burdens on the control function for the network. Both a clear mode of operation and an antijam mode of operation (often with different properties and characteristics) must be controlled and, furthermore, a timely mechanism for transitioning between the two modes must be provided.

In this paper the generic top level requirements are defined for a military satellite communications control system. The control system function is then divided into its key components and generic requirements are provided for each component. Alternative strategies for both communicator and jammer are discussed leading to the flow of events that would result in the transitioning of the SATCOM network in response to a changing ECM environment.

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Apr 1st, 8:00 AM

Satellite Communications Network Control in the Presence of Electronic Countermeasures

Satellite communications networks have supplanted other over-the-horizon communications systems because of their high capacity and high reliability. A key characteristic of satellite communications systems is that all communication links within a network share a common transponder and thus have the potential for deleterious interactions. This in turn gives rise to the need for a network control function that can establish and ensure appropriate transmission characteristics for each terminal with the goal of maximizing the communications capacity available to all network members.

Because of the potential for electronic countermeasures in military satellite communications systems, an antijam mode of operations, which by its very nature is a reduced capacity mode, is often included in the network architecture. This in turn puts added burdens on the control function for the network. Both a clear mode of operation and an antijam mode of operation (often with different properties and characteristics) must be controlled and, furthermore, a timely mechanism for transitioning between the two modes must be provided.

In this paper the generic top level requirements are defined for a military satellite communications control system. The control system function is then divided into its key components and generic requirements are provided for each component. Alternative strategies for both communicator and jammer are discussed leading to the flow of events that would result in the transitioning of the SATCOM network in response to a changing ECM environment.

 

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