Digital Early Warning Receiver (EWR) for the Next Generation Submarine Electronic Warfare (EW)

Period of Performance: 07/18/2016 - 01/14/2017


Phase 1 SBIR

Recipient Firm

Sonalysts, Inc.
215 Parkway North Array
Waterford, CT 06385
Firm POC
Principal Investigator


Sonalysts proposes to develop a novel Digital Early Warning Receiver (DEWR) concept that fits within the digital architecture of the Next Generation Architecture (NGA) Submarine Electronic Warfare Suite. The DEWR will employ a modular video detection and digitization layer with narrow acceptance bandwidths across the entire electromagnetic spectrum and high-speed analog-to-digital conversion. Digital video output is processed to satisfy legacy safety of ship requirements and to feed innovative algorithms for improved pulse characterization, feature extraction, and cueing of the AN/BLQ-10B narrow band receivers. Raw digital data and Pulse Descriptor Words (PDWs) are provided to a high-speed network to support the incorporation of new capabilities via advanced algorithms. Sonalysts DEWR approach exploits advances in envelope detection technologies to increase sensitivity and dynamic range while retaining the dependability and fleet familiarity required of a safety critical application. A tunable notch filter upstream of the detector is used to mitigate the effects of Continuous Wave (CW) interferers. Additional advantages include: retention of rugged highly reliable analog front end, incremental fielding of digital capability, and supports future NGA system feeding digital data products to and from the DEWR. Sonalysts modular design concept reduces implementation risk for NGA and increases the Navys return on investment.