Multi-Dynamic Radar: A Concept for Strategic Air Surveillance System

Multi-Dynamic 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 vulnerabilities in a combat scenario. This provides high performance for operational requirements compared to multi-static, bi-static or mono-static radar. For last few decades, stealth technology has been one of the most widely used approaches for target hide-out from radar-systems. This technology uses the concept of low observable principle to reduce the radar cross section (RCS) in the direction of radar. Earlier, ground based radars like bi-static-radar or multi-static-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 Multi-dynamic radar, the transmitters (Tx) and receivers (Rx) are placed on airborne platform such as aircraft or on un-manned air-vehicles. The operational challenges for MDR configuration is how to exploit the Tx-Rx sensors dynamics for benchmarking the performance. In this paper, the MDR system-geometry is considered as a set of bi-static-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 (OFDM-LFM) 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 airborne Tx and Rx platform.