76059-There is a substantial amount of buried transuranic waste (TRU) and mixed low-level waste (MLLW) stored at DOE sites around the nation. Recent efforts to remediate this waste have been hindered by lack of exact knowledge of the details of where and which materials were buried in several of… More

Determining a geo-reference of an underwater object is a critical requirement for marine applications such as mine-hunting and marine surveying. Although a GPS fix can be obtained at the surface, the watch circle of a tether connecting a surface and underwater body can impose positional errors that… More

The US Navy's new DD(X) destroyer currently under design features amongst its extensive sensor suite an innovative dual (high frequency and mid-frequency) frequency, active bow sonar. One of the primary missions of the high frequency (HF) component of the bow-sonar will be in-stride mine avoidance.… More

Localizing low frequency noise sources in shallow water using a horizontal array is complicated by waveguide dispersion and maneuverability constraints. If the dispersive properties of the sound propagation channel are well known, waveguide effects can be used advantageously for the purpose of… More

Applied Physical Sciences Corp. will develop a distributed buoy detection system using an advanced acoustic receiver. The sonar array will consist of a vertical line of vector hydrophones to maximize gain against unwanted ambient noise and provide 20+nm detection ranges for targets of interest.… More

76059S In order to safely remove transuranic waste (TRU) and mixed low-level waste buried in the subsurface disposal areas (SDAs), it is important to anticipate exactly what materials are directly below the surface. This project will develop neutron-based, logging tools that can identify TRU and… More

Applied Physical Sciences Corp. (APS) proposes the Phase II development of an Acoustic Intensity Localization System (AILS). AILS utilizes a vector hydrophone to measure the latitude-longitude offset to an acoustic projector attached to surface buoy whose position is known via GPS. A major… More

The US Navy's new DD(X) destroyer, currently under design, is expected to serve not only as an independent battlespace resource but also as a hub of a network of environmental sensors and sonar platforms. In this role, the DD(X) crew is responsible for deciding the distribution of assets needed to… More

An advanced vector hydrophone towed array is proposed for surface ship torpedo defense applications. Vector hydrophone promise to provide much-needed array gain in aperture-constrained systems. The additional gain results in significant increases in detection ranges and/or decreases in false alarm… More

A critical design feature for a towed mine countermeasure platform is low drag. In this STTR we propose to integrate an efficient acoustic source within a low drag body to perform influence mine sweeps behind an unmanned surface vehicle. To develop the optimum system a trade-study is proposed… More

Under SBIR Topic N04-218, Applied Physical Sciences Corp. (APS) developed and demonstrated candidate modifications to the existing DD(X) Integrated Undersea Warfare System's High Frequency (IUWS-HF) bow sonar signal processor that would improve the sonar's mine-hunting capabilities in refractive,… More

Off-board vehicles deployed in littoral environments are subjected to severe operational loads, including wave slamming, high-speed collision with debris, and underwater explosions. They additionally serve as sensor platforms, and would benefit from reduced self- and radiated noise for towed array… More

Shock mitigation and vibration isolation of electronics, machinery and other selected components are critical in the design and safe operation of Naval surface combatants. Based on the different forcing functions and constraints that characterize 1. shock loading, and 2. vibration isolation of… More

The DD(X) destroyer relies on sophisticated, dual frequency bow sonar for mine-avoidance, ASW, and torpedo defense. Existing approaches to in situ bow sonar calibration that use booms to extend hydrophones beyond the sonar, along with legacy nearfield-to-farfield projection algorithms, will not… More

The use of unmanned surface vessels (USV) towing underwater sensors will be part of the Littoral Combat Ship concept of operations for mine, anti-submarine, and anti-surface ship warfare. However, the wave-induced motions of the USV may degrade or limit sensor performance unless measures are taken… More

Intelligence, surveillance and reconnaissance operations in the littorals require higher sensor densities than are generally necessary in blue-water environments, and inevitably place sensor platforms within striking range of enemy combatants. Technological preparations for the littoral battlespace… More

The overall intent of this project is to produce cost-effective component technologies that will facilitate the development of compact sensing nodes which are utilized by deep submergence vector sensing line arrays. The principle application for this effort is targeted for the augmented reliable… More

The Doppler cue obtained from using narrowband Doppler-sensitive sonar waveforms is an effective discriminator of moving targets from clutter. Often, however, targets will exhibit low Doppler, caused by slow-moving or cross-range motion, with Doppler further reduced in multistatic sonar for targets… More

Applied Physical Sciences Corp. (APS) and its proposed subcontractor Applied Research Laboratory of the Pennsylvania State University (ARL/PSU) propose to develop a deployable marine mammal mitigation system. The system will use vector hydrophones to passively detect, track, classify, and localize… More

Existing multistatic airborne ASW systems require high power sources and are unable exploit the significant forward scattering target strengths due to the blinding presence of the direct blast. Time reversal (TR) is a recent method for focusing acoustic energy at a point using a pair of vertical… More

The overall intent of this project is to develop a series of miniature vector sensors for statically deployed and towed array applications. In each of these applications the sensor will be required to have an operational bandwidth commensurate with the passive ASW frequency range and an electronic… More

During the Phase I Base Effort, an omni-directional hydrophone will be designed and tested for prospective use in a ULF sonobuoy application. The design will be based on a sensor that was previously developed for an unrelated ULF application, but will generally fit within design envelope of the… More

The original intent of this SBIR was to design combined shock and vibration isolation mounts for shipboard equipment. Recently, the need to develop such a combined mount(s) for the DDG 1000 Electronic Module Enclosure (EME) has manifested itself. The primary objective now, then, is to develop and… More

Under the proposed Phase II STTR effort, Applied Physical Sciences Corp., along with their partners, The Applied Physics Laboratory at the University of Washington, Wilcoxon Research, Inc., and Chesapeake Sciences Corp., proposes to develop an advanced vector hydrophone towed array. This includes a… More

Preliminary development of a noise audit model for vector sensor towed arrays will be performed and is focused on tasks related to validating an analytical model of a thin-line array. An in-house numerical code known as the duct transmission line (DTL) modeling tool will be adapted for specific… More

Safe and reliable launch and recovery of small offboard assets is important to the concept of operations for the Littoral Combat Ship (LCS), as they are deployed to complete a wide range of missions. The LCS design specification requires launch and recovery of watercraft to be completed within… More

The propagation of acoustic signatures from vehicles, aircraft, boats and artillery can have a significant impact on military operations. Specifically combatants need to reliably detect enemy acoustic signatures while at the same time concealing their own. The physical propagation environment,… More

Active sonar clutter usually appears on a display as an amalgamation of point scatterers that exhibit both object and individual reflective and kinematic behavior. We propose to demonstrate the feasibility of constructing a realistic active sonar clutter model based on a few generalized concepts to… More

Experimental and computational studies have indicated the benefits of fish swimming propulsion for efficiency and fast maneuvering capability. The biological paradigm of using unsteady body motion to generate and manipulate flow vorticity for desired hydrodynamic thrust marks a shift from the… More

Applied Physical Sciences Corp. (APS) will develop a deployable marine mammal mitigation system. The system will use vector hydrophones to passively detect, track, classify, and localize vocalizing mammals. Wavelet and conventional spectral analysis methods will be coupled to species-specific… More

Existing multistatic airborne ASW systems require high power sources and are unable to exploit the significant forward scattering strength of a submarine target due to the blinding presence of the direct blast. Time reversal (TR) is a recent method for focusing acoustic energy at a point using… More

The overall intent of this project is to develop a series of vector sensors for thin-line submarine towed array applications and down-select one for full evaluation via a comprehensive test campaign. Once the sensor is perfected, a production run of eight sensors will be performed so that a… More

The overall intent of this project is to develop a triaxial pressure-acceleration vector sensor that is suitable for reliable acoustic path sensing. The sensor is intended to have a nominal size that is commensurate with an AN/SSQ-53 DIFAR sonobuoy wet-end transducer, have a 6 km submergence depth… More

Most commercial motor controllers (MC's) operate at relatively low switching frequency that produces a detectable acoustic signature and therefore drives the Navy to procure MC's operating at higher frequencies in order to reduce acoustic signature. These custom MC's, however, still generate… More

The results of the Phase I effort demonstrated the feasibility of constructing a realistic, high fidelity active sonar clutter model that is not computationally intensive. Our first objective is to create a library of clutter objects based on statistical descriptors extracted from existing sonar… More

There is a Department of Defense need for a persistent, mobile power generating capability to service offshore bases and other temporary or mobile installations. In order to facilitate both persistence and mobility, the present concept is of a free floating wind turbine platform, convertible from… More

Applied Physical Sciences Corp. working with L-3 Communications Maripro will develop a trawl-resistant, Robust Deployable Acoustic Node (RDAN). The RDAN technology will enable the U.S. Navy to install and operate acoustic underwater training ranges in shallow water environment to enhance fleet… More

Applied Physical Sciences and the University of Maryland propose to develop a magnetostrictive transducer that harvests electrical energy from shipboard machinery while simultaneously suppressing vibration to improve the ship's stealth characteristics and thereby improving the performance of hull… More

Applied Physical Sciences (APS) and the Pennsylvania State University Applied Research Laboratory (ARL/PSU) will collaborate in the development of a novel sensor system to measure the low frequency acoustic pressures within a fluid-filled pipe. The proposed concept improves upon the Navy's current… More

The proposed research "Deep UUV Deployed Surveillance System" will identify the requirements and formulate a conceptual design for a new wide area underwater surveillance that exploits the unique attributes of deep submergence environments to detect and track atmospheric, seismic and acoustic… More

The Department of Defense (DOD) would benefit from a persistent mobile power generating capability to support global deployments, remote basing, and disaster relief. Eliminating the need for fuel transport over long distance, a towable floating wind turbine could provide a persistent power source.… More

Applied Physical Sciences as the prime contractor and Undersea Sensor Systems, Inc. as the subcontractor propose an innovative approach to develop an air-deployed sonobuoy system having an array gain of at least 24 dB. The approach involves an array of subminiature vector sensors coupled to… More

Applied Physical Sciences Corp. (APS) in collaboration with Capewell Inc. will develop an automated system for logging parachute usage and performance electronically using a miniature embedded data logger which interfaces directly with commercial-off-the-shelf (COTS) radio frequency identification… More

Under this NAVAIR SBIR Phase II.5 Continued Development (CD) effort Applied Physical Sciences Corp. will develop and demonstrate the hardware and software for a proof-of-concept experiment in which advanced array and signal processing technology is used to help detect an underwater target. Vector… More

Applied Physical Sciences Corp. proposes to develop a Marine Mammal Mitigation Miniature Acoustic Detection Subsystem (MADS) for the AN/SSQ-125 active source sonobuoy or similar system. MADS will consist of a miniature high-frequency active sonar array for detection and tracking of marine mammals… More

Applied Physical Sciences Corp. (APS) in collaboration with Ocean Technology Systems (OTS) will develop a diver physiological monitoring (DPM) system with integrated microdisplay that easily retrofits with existing full face masks (FFM) and that leverages commercial-off-the-shelf biometric sensors. … More

APS will expand on available and evolving analytical/numerical tools to address design and performance parameters for Permanent Magnet couplings and gears. APS has developed complex modeling tools for designing and assessing current permanent magnet (PM) motors under ONR sponsorship. These tools… More

ABSTRACT: In order to avoid potential collisions with space debris future spacecraft in geosynchronous (GEO) orbit may be required to detect all objects in their local environment and will be required to have 4pi steradian coverage. Unfortunately the sun can blind and/or damage these sensors if… More

Navy acoustic research and test laboratories, such as those at the Acoustic Research Detachment (ARD) and the Southeast Alaska Acoustic Measurement Facility (SEAFAC), use large, high gain hydrophone arrays to measure and characterize the radiated acoustic signatures of full scale and small scale… More

Applied Physical Sciences will develop a sound projector to support acoustic communication for submarines operating at tactical depths and speeds. The projector will have a nominal bandwidth and submergence depth rating of nominally 150 to 300 Hz and 1 km, respectively. System concepts that compare… More

Sonar performance predictions are often unreliable due to the lack of accurate information about the acoustic properties of the ocean around the globe. We propose to demonstrate an environmental estimation technique that uses reverberation from active sonar transmissions to infer environmental… More

Applied Physical Sciences Corp. (APS) will develop designs and proof-of-concept devices to demonstrate a marine mammal detection capability for a variant of the AN/SSQ-125 active source sonobuoy. Acoustic transducers, signal processing algorithms, and data interfaces will be developed and tested.… More

The Phase II effort consists of a 12-month Base and two 6-month Options. The Base is centered on the design, fabrication, and test of a prototype projector and power electronics. Testing is planned at NUWC Seneca Lake to evaluate the projector"s electro-acoustic performance. The first Option is… More