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Radar warning receiver (RWR) time-coincident pulse data extraction and processing

This paper will present an approach for implementing an airborne radar warning receiver (RWR) pulse data extraction (PDE) and processing technique capable of handling multiple time-coincident radio-frequency (RF) pulse input threat emitter signals received in a dense threat radar signal environment. The pulse data extraction technique is specifically developed to accommodate the RF to video response of current commercial-off-the-shelf (COTS) or militarized COTS (MOTS) extended-range detector logarithmic video amplifiers (ERDLVAs), including extracting signal information in the presence of device noise. The approach uses a combination of time-domain filtering, adjustable thresholds, and edge detection techniques combined with a four-quadrant data comparison to extract individual pulse data from overlapped multi-source and uncorrelated noisy pulse inputs, and the processed data output can be used as part of the presented PDE algorithm and also may provide pre-processing for currently used pulse deinterleaving and sorting methods. The developed technique has the potential to provide system response that is optimized for various threat environments via pre-deployment programming or continuous-time dynamic variations in the PDE.