To address the Navy need for fast, affordable, and reliable tunable notch filters at X-band frequencies, Physical Optics Corporation (POC) proposed to develop a new Tunable, Rapid, Electronically Controlled X-band (T-REX) notch filter, based on a resonating RF structure utilizing ferroelectric-based capacitors for ultrafast-frequency tuning. The innovation in the resonating RF structure provides a large tunable range by using tunable capacitors to quickly (<50 ns) change the impedance to shift the operational frequency. As a result, the initial T-REX Phase I protoype filters offer notch attenuation >-40dB within the 8.8 GHz to 12 GHz range, minimal passband insertion loss (<0.3 dB), and a notch bandwidth from 800 MHz to 1200 MHz with low reflected power (<10%), which directly addressed the Navy need for low-cost electronic warfare and military communications systems that suppress interference. In Phase II, POC will further optimize the T-REX filter design. POC will develop a fully functional prototype, covering the entire frequency range (from 8 GHz to 12 GHz) for demonstration and evaluation at a Navy facility, to reach technology readiness level (TRL)-6/-7.
Current quartz temperature-compensated crystal oscillators (TCXO) cannot withstand the harsh environment of a high-velocity, gun-launched guided projectile. The Ferroelectric Resonator Oscillator (FEROS) technology is a high-G mechanical shock and temperature shock tolerant, ferroelectric-based oscillator system that can replace TCXOs and be integrated into high-G miniaturized GPS receivers. Initial prototype devices have been fabricated and tested for electrical and temperature performance validating functionality. Physical Optics Corporation (POC) is an advanced systems integrator with expertise in optical, electronics, and avionics systems, surveillance equipment, sensors, x-ray, and software. Our goal is to work with a prime contractor for the GPS receiver integration and transition this technology into the initial targeted platform, the Hyper Velocity Projectile, SHD FY15-17, for the PEO IWS 3C Surface Gunnery Program.
There is potential for foam overflows within Vacuum Collection Holding and Transfer (VCHT) tanks onboard naval ships, causing spills onto the weather decks that could result in serious environmental impacts. Our system leverages ultrasonic sensing methodology to non-invasively and non destructively sense foam in the VCHT tank. During mitigation, it couples with an existing water spray system to eliminate foam. The system is a compact unit consisting of an array of ultrasonic sensors to a data acquisition and power control unit. The system is modular nature; therefore, adaptable to other applications where autonomous foam sensing/elimination is required. Currently, a Phase II prototype is being developed. POC is a small systems integrator that specializes in commercializing technologies developed under SBIR projects. Our goal is to integrate this technology into Navy and commercial platforms requiring foam elimination solutions .
The Adaptive Disturbance Mitigation System (ADiMiS) is a dynamic control solution that stabilizes a moving platform against external motion disturbances. It can mitigate tow-point-induced motion disturbance on a towed body such as AQS-20 minehunting sonar. It can complement the existing towed-body controller to provide low cost of implementation onto AQS-20. Computer simulations of ADiMiS on actual AQS-20 towed data showed that ADiMiS effectively reduces pitch and yaw disturbances by an average of >18 dB in diverse towing conditions. These motion stability improvements can greatly enhance AQS-20 mine detection and classification performance. Physical Optics Corporation (POC) has a quality system currently certified to ISO 9001:2008/AS9100C, as well as ISO 9001:2008/AS9110B. POC will explore other platforms to which ADiMiS can be transitioned.
The Fishing Net Entanglement Avoidance System (FiNEAS) is an underwater towed vehicle that is attached onto the front of a towed array. It is self-powered, locates obstacles such as fishing nets, and maneuvers the towed array around the obstacle to prevent entanglement and improve array survivability. The overall dimensions of the FiNEAS are ≈1.5m×0.9m×0.8m; it weighs ≈150lb and can be easily assembled on the ship deck and attached onto the tow cable. It is easily retrievable from the water, free to pitch and roll, does not interfere with the towed array operation, and operates up to 2,500-ft depth. Open water testing of the reduced-function prototype showed that FiNEAS can move >50ft to either side of the tow direction in <30s while towing at 3-knots.