NLM Secure Satellite Communications

We have, and will demonstrate, an operational radio frequency digital nonlinear communications transceiver that uses a chaotic signal generator for signal encoding. This system solves the problem of synchronizing remote chaotic oscillators in noisy environments while utilizing the entire bandwidth for information transmission. The encoding scheme has been shown to be an NP complete solution to information encryption, which means that an exhaustive search is the only technical means for breaking the encoding. The waveform has a Gaussian distribution, which makes hostile interception difficult. The hardware is inexpensive and can easily be integrated into existing digital communications architectures. The Phase I project will define an optimum multistable chaotic transceiver system encoder/decoder suitable for satellite communications, build an engineering prototype, and test it for noise and channel distortion robustness. Thus, we have already met most of the major requirements of the solicitation for Phase I as well as some of the Phase II objectives.