Multidynamic Radar: A Concept for Strategic Air Surveillance System

Multidynamic radar (MDR) configuration is emerging as state of the art in the field of airborne radar, where several airborne radars work in a coordinated manner. MDR systems provide better spatial diversity and resistance to other vulnerability in combat scenario. This provides high performance for operational requirement compared to multistatic, bistatic, or monostatic radar. For last few decades, stealth technology has been one of the most widely used approaches for target hideout from radar systems. This technology uses the concept of low-observable principle to reduce the radar cross section in the direction of radar. Earlier, ground-based radars, like bistatic radar or multistatic radar, were used to counter such target hideout. Airborne radar has its own advantages for better visibility and coverage for airborne surveillance. In the proposed MDR, the transmitters (Tx) and receivers (Rx) are placed on airborne platform, such as aircraft or on unmanned air vehicles. The operational challenges for MDR configuration is how to exploit the Tx-Rx sensor dynamics for benchmarking performance. In this letter, the MDR system-geometry is considered as a set of bistatic radar at a given time and simulated with all possible airborne Tx-Rx pair combinations for evaluating MDR performance. The simulation is also done for a proposed orthogonal frequency-division-multiplexing linear-frequency-modulated-based waveform design using a derived ambiguity function for the proposed MDR scenario. A design methodology is shown for an MDR to achieve phase synchronization across the airborne Tx and Rx platform.