A communications satellite ECCM concept

Anti-jamming techniques for military SATCOM communications are described. The critical node is the satellite, through which all traffic passes. Spread spectrum (SSS), TDMA, and/or adaptive antenna nulling (AAN) are the methods available for maintaining an acceptable SNR, SS, i.e., waveform processing, is achieved through either frequency hopping or direct sequence pseudo-noise techniques. The multiple receiving elements of the AAN array provide control over beam nulls and peaks in the sidelobes and mainbeam position and distortion. It is necessary to install all three capabilities on communications satellites using VLSI components and/or GaAs monolithic microwave integrated circuits (MMIC).