SBIR-STTR Award

This proposal examines a combination of proprietary techniques for preventing shipboard SINCGARS transmitters from overdriving and desensitizing a cosite sensitive signal exploitation receiver. ZA proposes to pursue further development and integration of these techniques, which in combination offer interference suppression greater than 50 dB, low impact on receiver noise figure, and fit in less than a 7 U high rack mount unit for each direction-finding receiver channel.

Benefit:
Development of the proposed technique will allow a shipboard signal exploitation receiver to operate over the HF, VHF, and UHF frequency ranges without desensitization by multiple, strong, cosited SINCGARS transmitters. The technique will also be extremely beneficial to SINCGARS communications reception in the presence of strong cosite SINCGARS transmissions on U.S. Navy ships and on ground vehicles operated by the U.S. Marine Corps and U.S. Army.

Keywords:
Frequency Hopping, Frequency Hopping, Tunable hopping filter, Cosite Interference Mitigation, cancellation, SINCGARS

Zeger-Abrams proposes to implement a SINCGARS RFI cancellation system to prevent the RFI from overdriving and desensitizing each of the four RF inputs of a cosite sensitive signal exploitation receiver. A unique feature of ZA’s cancellation system is that it requires no input cables carrying RFI reference signals. Based on ZA’s Phase I experiments, the SINCGARS RFI cancellation system is expected to produce >50 dB of RFI suppression with low impact on receiver noise figure. The system packaging will be modular, allowing straightforward reconfiguration for other applications.

Keywords:
Cosite Interference Mitigation, Cosite Interference Mitigation, Frequency Hopping, Sincgars, Cancellation