Highly survivable communications: complementary media packet switched networks

The requirement for reliable communications for many national security, crisis management and natural disaster related requirements is clear. The ability to communicate under extreme conditions including intense and/or sophisticated jamming and adverse propagation conditions (possibly induced by high altitude nuclear events) is a very important requirement. This paper presents complementary multi (propagation) media approach as the most cost-effective manner for implementing such systems. Packet switching, including packet radio, is the integrating technology and various open protocol examples/implementations for use with narrow band beyond line of sight radio systems are presented together with test results