Abstract: A new analytic technique for optimal jamming waveforms is presented. Based on the performance of TDRSS S-band spread spectrum links, according to the theory of optimal jamming, the spot jamming equation is presented based on the correlation function between signal waveforms and jamming codes waveforms. Then it is proved that the jamming equation in the sense of the equal value is the optimal jamming waveform condition. Finally, the Monte-carlo simulation results illustrate that the optimal jamming waveform is a square waveform, because its equal value of jamming equation is larger.

Key words: TDRSS, spot jamming, simulation