Isl proposes to develop an interactive model for the ibm pc and exercise this model to: evaluate the potential accuracy of alternative angle of arrival and tdoa techniques; evaluate the tradeoffs between computational time and accuracy afforded by alternative ionospheric and propagation models;… More

Attack submarine effectiveness in the battle group is hampered by lack of a reliable means of communication with other elements of the battle group which doesn't compromise the submarine's stealth or maneuverability. principle technical challenges are propagation through a highly conducting medium,… More

The naval battle group relies on netted communications for tactical communications. the communications assets are planned to be integrated into an internetwork of rf subnetworks which is shared by voice, ntds, and data users. the performance of alternative protocols and algorithms within the… More

The naval battle group relies on netted communications for tactical communications. the communications assets are planned to be integrated into an internetwork of rf subnetworks which is shared by voice, ntds, and data users. isl proposes concepts for bridging among fragments of rf networks which… More

The capability to detect and identify strategic relocatable targets (srt) is vital to an effective strategic counter force. the challenging problem of doing so is exacerbated by natural camouflage using foliage and forests where conventional radar and imaging techniques experience severe… More

High frequency (hf) radio has historically been and will continue to be a vital medium for communications capable of operation without relay to over-the-horizon distances using relatively inexpensive equipment. location and tracking of communication signals can provide a valuable source of extract… More

This proposal outlines an approach that allows modern computer hardware to be used for communicating with telecommunications devices for the deaf (tdd). a device to be attached to any standard computer modem will provide the interface and conversion necesary for this to take place. the proposed… More

New submarine missions will require submarines operating in littoral waters to monitor non-radiating aircraft in their operational areas while remaining electromagnetically silent themselves. Conventional passive sensors such as ESM and IR will be ineffective against silent aircraft, and… More

Closely-spaced, co-channel (same time and frequency) signals, interference, and jamming can severely degrade the performance of communication, radar, and signals intercept systems. The ability to maintain communications in operational scenarios encountering closely-spaced, co-channel signals using… More

The objective of this project is to develop new concepts and approaches in integrated radar system technology utilizing photonic elements to achieve significantly greater systems performance. This effort will focus on the study of new hybrid digital/photonic radar architectures to achieve the… More

The characteristics of low grazing angle propagation over the ocean are an important factor in understanding the potential performance of systems in a wide variety of applications, including communication links, radar detection of low flying targets, and periscope detetion. To that end, propagation… More

The makeup and location of hostile forces can be identified for battlefield surveillance or target acquisition by deploying a network of autonomous acoustic sensors. Each sensor would listen for acoustic emissions from ground vehicle traffic. Such emissions would then be analyzed by pattern… More

Reconfigurable computing architectures based on Field Programmable Gate Arrays (FPGAs) offer extaordinary real time processing rates in inexpensive programmable hardware. The key to using FPGAs for reconfigurable computing is to reformulate algorithms in terms of parallel operations that are easily… More

The demand for carrying out a complete signal processing task, from multiple sensor output processing to feature extraction to automatic target identification and recognition on a physically restricted platform such as a UAV demands that the signal processor hardware perform all the tasks with… More

Not Available DARPA is soliciting new, real-time methods for wave front WF testing, that will utilize extended scene imagery. In response, Physical Optics Corporation (POC) proposes Hartmann-autofocus sensors (HAS). In the proposed HAS, the exit pupil of an imaging missile seeker will be divided… More

Not Available Laser sources are required to achieve many National Defense requirements for range finders, illuminators, mid-IR sources for countermeasures (IRCM), and solid state optical radars for range gated imaging, autonomous piloting, targeting and guidance. Significant advancements have been… More

The proposed work is directed towards the understanding and utilization of the relatively unexplored concept of ablative laser propulsion (ALP). The work will include direct measurements of the specific impulse imparted to solid targets under short-pulse laser irradiation. The purpose of the… More

This Small Business Innovation Research (SBIR) Phase I project will explore a low-frequency positioning system for locating and tracking people inside of buildings. Phase I will establish system feasibility by showing that lower frequencies will not be subject to the guided-wave propagation modes… More

Space time adaptive processing (STAP) plays a very important role in theeffectiveness of GMTI radar. STAP offers the potential to detect slow movingground vehicles that would otherwise be obscured by strong background clutterfor systems employing conventional beamforming. In high target… More

A need exists to simultaneously mitigate/cancel interference due to sidelobe andmainlobe jamming and clutter. Practical signal processing techniques withapplication to existing radars (such as the SPY-1) are required. In this proposalISL addresses this need by examining two approaches. 1) the use of… More

"Space time adaptive processing (STAP) plays a very important role in the effectiveness of GMTI radar. STAP offers the potential to detect slow moving ground vehicles that would otherwise be obscured by strong background clutter for systems employingconventional beamforming. In high target density… More

Our Phase-I investigations were completely successful and gave new life to the concept of ablative laser propulsion (ALP). New measurement techniques and equipment have been incorporated into the basic experimental apparatus constructed in Phase I, and this improvement will add considerably to our… More

"To meet the submarine threat in the littoral, high-speed submersibles will require additional information from target electric (E) fields to improve Detection Probability, reduce False Alarm Rate, and provide tracking information, in a turbulent regimewhere acoustic sensors encounter difficulty. … More

"The fusion of seismic and magnetotelluric data holds promise in discriminating between underground nuclear blasts and earthquakes. MT measurements can sense several different effects of nuclear blasts: the acoustic wave which travels slowly away from theblast center, the upward propagating wave… More

This Small Business Innovation Research (SBIR) Phase II project will demonstrate a capability for locating imperiled firefighters in buildings using wireless technology based on long wavelength signals that penetrate buildings with lower perturbation than observed at higher frequencies. The system… More

This Small Business Innovation Research (SBIR) Phase II project will demonstrate a capability for locating imperiled firefighters in buildings using wireless technology based on long wavelength signals that penetrate buildings with lower perturbation than observed at higher frequencies. The system… More

"Detecting tactical ballistic missiles (TBMs) in boost phase presents a significant technical challenge for a Navy ship-based radar operating in a littoral environment. In addition to mitigating land clutter, the radar will have to cope with terrainscattered interference or hot clutter generated by… More

"Our approach is to decompose the trajectory generation problem intothree distinct, but tightly coupled pieces: waypoint path planning (WPP),dynamic trajectory smoothing (DTS), and adaptive trajectory tracking (ATT).The WPP plans paths at a high level without regard for the dynamicconstraints of… More

The objectives of Phase II are to demonstrate the effectiveness of the mainbeam nulling algorithm (MBNA) developed in Phase I under the practical conditions/restrictions imposed by AEGIS radar systems and to establish the requirements and specificationsfor an adjunct signal processor that will be… More

Historically, submarines have encountered difficulty in avoiding collisions with commercial, surface and submarine crafts, particularly when surfacing. Usually the consequences are drastic, as when the USS Greenville collided with the Japanese fishing boatM/V EHIME MARU, with the tragic loss of nine… More

The objective of this effort is to develop interference mitigation algorithms for bistatic space-based radar (SBR) systems. The use of a bistatic SBR for wide-area surveillance offers many potential advantages: short path lengths, smaller satelliteconstellation sizes, clutter tuning potential, and… More

The objective of the proposed research is to develop innovative algorithms and a flexible, scalable processing architecture to detect and track aircraft (including launch vehicles) by exploiting scattered radiation from commercial high power radio andtelevision broadcast stations. The system is… More

We propose an augmented linearly constrained minimum-variance algorithm for radar jammer and clutter suppression. The basic LCMV algorithm is augmented to extend the simple target detection capability to target classification. In general, received radarreturns are comprised of a linear… More

The feasibility of a new approach that will accelerate the modeling of problems involving rarefied gas dynamics is established. The proposed hybrid approach solves the Boltzmann equation directly using a carefully designed discrete-velocity model and adiscrete Monte Carlo collision process with… More

Recent advances in digital receiver technology have the potential to revolutionize electronic warfare (EW) receiver design and dramatically increase capability. With wideband digitization come high data buffering and processing loads which stresscomputational resources. Two novel ESM architecture… More

In pulse compressed radars such as those used for missile defense, time sidelobes associated with pulse compression can obscure objects of interest which are smaller than but close to the tracked target. Under this SBIR, ISL will develop a computationallyefficient but highly capable algorithm to… More

The geolocater developed under this SBIR will be based on an existing design developed under the DARPA Wolfpack program and adapted for the SOCOM mission. It will be a modular device operating as part of a SOF tool box, and will employ a set of algorithmsthat can be applied to the given emitter type… More

Recent military campaigns in the former Yugoslavia, Afghanistan, and Iraq have highlighted the importance of unmanned air vehicles (UAVs) to national defense and security. While UAVs have already begun to play an important role in military operations, the full impact of the technology will only… More

Wide-area surveillance of airborne and ground-moving targets is an emerging research topic examined by the military services, DARPA and in the open literature. A space-based bistatic radar system offers many advantages for use in surveillance including the potential for covert wide-area coverage.… More

This project has developed innovative algorithms and a flexible, scalable processing architecture to detect and track launch vehicles by exploiting scattered radiation from commercial high power radio and television broadcast stations. The system is completely passive and emits no radiation. We… More

For stationary ground moving target indication (GMTI) radars, targets are generally isolated from clutter under the assumption that the clutter background is non-moving and therefore exists only at zero Doppler while moving targets will appear at non-zero Doppler shifts. In reality the background… More

GMTI radar systems have long been plagued by poor cross range (azimuthal) resolution due to the long standoff range of the sensors and the limitations of aperture size and beamwidth. This problem is especially true at UHF frequencies due to the large physical aperture required to achieve reasonable… More

The objective is to demonstrate by analysis and modeling that a MARINE ASSET TAG TRACKING SYSTEM (MATTS) is feasible and capable of satisfying key detection and security-related requirements in a marine shipping environment. ISL¿s unique approach couples proven features of conventional Local… More

This proposal provides research and assessment of the Cycloidal Propeller for stratospheric airship operations. This effort will include design and simulation of a propeller system sized for the stratospheric airship, assessment of materials, their performance, reliability for long-endurance… More

Future Navy ships operating in littoral waters must have low radar cross-section (RCS). Defining these requirements demands an accurate radar detectability model to give ship designers the tools to make appropriate trade-offs. The key to assessing the detectability of ships is to accurately model… More

The primary sensor used by a submerged submarine for target detection, tracking and collision avoidance is passive SONAR. Modern SONARS have evolved to a point where contacts can be detected and tracked with a high degree of accuracy. There are situations however, when contacts are not detected or… More

Combustor blowout instability develops under lean operating conditions displaying complex, low frequency thermo-acoustic fluctuations. In thermal pulse combustors, these oscillations can become chaotic. Detecting these changes in combustion dynamics prior to blowout has the potential to yield useful… More

For stationary ground-moving target indication (GMTI) radars, targets are generally isolated from clutter under the assumption that the clutter background is non-moving and therefore exists only at zero Doppler while moving targets will appear at non-zero Doppler shifts. In reality the background… More

The primary sensor used by a submerged submarine for target detection, tracking and collision avoidance is passive SONAR. Modern SONARS have evolved to a point where contacts can be detected and tracked with a high degree of accuracy. There are situations however, when contacts are not detected or… More

The use of tactical miniature unmanned aerial vehicles (MAV) is on the rise. MAV systems are typically affordable and small enough so that they can be operated at the platoon level and used to extend a unit's "line-of-sight" to see over/around mountains or into urban canyons. In the near future it… More

The power added efficiency of current power amplifiers is often adversely impacted by the linearity requirement. This is especially true for many modern communication signals that have high Peak to Average (PAR) ratio. Although advanced power amplifier linearization techniques such as adoptively… More

Recent progress in understanding the mechanisms underlying animal behavior has come from the construction biomimetic robots with neural circuit controllers and the analysis of the controller dynamics during interaction with the environment. Such robots have enabled researchers to quickly… More

Advanced technologies have enabled wide spread application of wireless voice and high speed data communication systems. These "personalized" communication systems also become important sources for intelligence gathering and monitoring of illegal activities. In this proposal, we propose to perform… More

Ground Moving Target Indicator (GMTI) radar provides an all-weather day-night capability to detect moving targets and provide robust persistent day-night surveillance of regions of interest. These radar systems can detect moving vehicles and human beings. These systems will also detect large animals… More

Recent advancements on linearizing power amplifiers using the LINC (Linearization on Non-linear Components) architecture have attracted attentions on researchers and engineers. This is primarily caused by two reasons. (1) Maturity and availability of high density and high speed digital electronics… More

There is a vital need to secure the long southern border of the United States, much of its length passing through rural and desolate areas. This can be achieved using a fixed land-based sensor network to detect people and vehicles crossing the border. ISL and DMT have identified a system… More

Information Systems Laboratories (ISL) and DMT LLC are pleased to propose an SBIR program to develop an advanced sensor system for an Unmanned Intelligence Vehicle (UIV). The proposed Phase I effort focuses on the cooperation and interaction potential offered by multi-sensor phenomenology and… More

Space radar offers the potential for all-weather day-night persistent detection of surface targets over the entire earth. For space radar to achieve its true potential, however, advances in radar signal processing will be required that address various issues associated with operating over a wide… More

ISL propose to combine state-of-the-art advances in signal processing algorithms and architectures and superconducting electronics to design and fabricate an essentially all-digital receiver (ADR) that will both mitigate the effects of EMI and reduce digital storage requirements. An innovative… More

The U.S. Navy requires highly modern and sophisticated radar system to accomplish missions in littoral water region where near shore terrain and weather in extreme sea-state conditions present challenging clutter environment for moving target indicator (MTI) operations. An important source of this… More

Current practice in robotics is to control robots with finite state machines operating on sequential processors. However, deterministic algorithmic programming limits the potential for adaptation in unpredictable environments. We propose an alternative approach, which is to control robot behavior… More

In the near future it is envisioned that low fidelity sensor data collected by tactical UAVs will be part of the Navy's FORCEnet distributed framework. Thus, the potential will soon exist to combine the imagery and video data collected from a wide variety of UAV systems to produce accurate targeting… More

Detection, tracking, and identification of targets in an urban environment is very difficult due to the density of targets, as well as the interrupted sensor to target line-of-sight due to intervening buildings. A single sensor has difficulty performing these tasks. Using multiple sensors with… More

In a number of arid regions of the world, recirculation of dust by the rotorwash of helicopters results in the loss of visual cues during helicopter approach and landing. This condition is typically referred to as brownout. This is a serious problem for all services and leads to numerous aircraft… More

Identified battlespace lines of communication (LOC) provide crucial knowledge of a surveilled environment, assisting in troop placement and maneuvering, communication network characterization, and intelligence regarding enemy movement. LOC mapping is difficult in areas with treacherous terrain… More

In a number of arid regions of the world, recirculation of dust by the rotorwash of helicopters results in the loss of visual cues during helicopter approach and landing. This condition is typically referred to as brownout. This is a serious problem for all services and leads to numerous aircraft… More

Space radar offers the potential for all-weather day-night persistent detection of surface targets over the entire earth. For space radar to achieve its true potential, however, advances in radar signal processing will be required that address various issues associated with operating over a wide… More

Ground Moving Target Indicator (GMTI) radar provides an all-weather day-night capability to detect moving targets and provide robust persistent day-night surveillance of regions of interest. These radar systems can detect moving vehicles and human beings. These systems will also detect large animals… More

Information Systems Laboratories (ISL) and Florida Atlantic University (FAU) propose to develop and test a system that uses existing signal processing algorithms coupled with innovative construction technology developed ISL under our E-Field sensor programs and FAU under UUV programs. The Challenge… More

Ground Moving Target Indicator (GMTI) radar provides an all-weather day-night capability to detect moving targets and provide robust persistent day-night surveillance of regions of interest. While these radar systems are designed to detect moving vehicles and human beings, they typically also… More

The accident rate of helicopters immersed in a dust cloud represents a major contributor to loss of personnel and material in operations in a desert environment. Although measures such as approach profile changes and pilot training implemented to date have reduced this accident rate, it remains… More

Precise navigation is crucial to the Navy's submarine fleet, as is the ability to keep each submarine submerged and covert. All INS systems drift, and require additional inputs to correct the drifting navigation. In this Phase I, ISL will research two innovative electromagnetic velocity estimation… More

The DoD is developing a number of radars to detect and track surface targets including vehicles and dismounts as well image targets using synthetic aperture radar modes. These system achieves wide-area surveillance for dismounts by operating on stationary platforms (helicopter) which eliminates… More

Information System Laboratories, Inc. (ISL) proposes to team with ERAPSCO, a joint venture of USSI and Sparton, the world''''s leading sonobuoy manufacturers, to develop a low-cost underwater E-field sensor capable of collecting all electric field signals emanating from submarines. In particular, a… More

Passive radio frequency identification (pRFID) transponders (tags) are relatively less expensive than active RFID (aRFID) tags, and the absence of a battery makes them attractive for applications where very long life is important. Passive tags derive their power from the RF field, and this power… More

Information Systems Laboratories, Inc. (ISL) proposes to team with Applied Physical Sciences Corp. (APS) and ERAPSCO to develop a low-cost underwater sensor capable of collecting both acoustic and electric field signals. APS is a recognized leader in the development of advanced acoustic sensors and… More

A wide variety of unmanned air vehicles (UAVs) carrying various sensors are increasingly deployed on today's battlefield for intelligence, surveillance and reconnaissance (ISR) missions. These UAV platforms provide a wealth of ISR data mainly captured with video sensors. These video sensors provide… More

Information Systems Laboratories (ISL) and Florida Atlantic University (FAU) propose to develop and test a system that uses existing signal processing algorithms coupled with innovative construction technology developed ISL under our E-Field sensor programs and FAU under UUV programs. The Challenge… More

ISL with partner with Raytheon and Rock West Composites to design a diode pumping solid state laser system with the following specifications: 250mJ/pulse, 300Hz,

Bistatic radar processing by airborne signals intelligence (SIGINT) and other intelligence, surveillance, reconnaissance (ISR) platforms affords covert, passive exploitation of adversary or own-force radar systems to improve tactical situational awareness and fused intelligence products.… More

The accident rate of helicopters immersed in a dust cloud represents a major contributor to loss of personnel and material in operations in a desert environment. Although measures such as approach profile changes and pilot training implemented to date have reduced this accident rate, it remains… More

In Phase II, Information Systems Laboratories, Inc. (ISL) will team with Applied Physical Sciences Corp. (APS) and ERAPSCO to develop a low-cost underwater sensor capable of collecting both acoustic and electric field signals. APS is a recognized leader in the development of advanced acoustic… More

In Phase II of this effort, Information Systems Laboratories, Inc. (ISL) will team with ERAPSCO to develop a low-cost underwater sensor capable of collecting both the horizontal and vertical components of electric field signals. ISL is a recognized leader in the development of undersea… More

The Naval tactical submarine environment consists of a complex set of computing requirements unique in many aspects to the environment. However, along with the uniqueness of some requirements comes other more common requirements found across many of the large Department of Defense (DoD) programs.… More

Navy combat swimmers are vulnerable to intentional or unintentional detection by active Sonar while they are conducting their mission in the littoral environment. The Sonar's that normally operate in the littoral represent the greatest threat to divers as well as smaller size undersea vehicles like… More

ABSTRACT: Live, virtual, constructive (LVC) threat simulation in electronic warfare (EW) training systems has allowed pilots to train against dense realistic threat arrays. For example, training simulations provide radar warning receiver (RWR) in-flight training against passive threats such as air… More

ABSTRACT: Large numbers of intelligence, surveillance, and reconnaissance (ISR) sensors spanning a number of different phenomenologies (e.g., radio frequency and optics) are currently employed in support of the global war on terror. While these sensors provide data streams that contain a wealth of… More

E-fields produced by submarines is a technology that is suited to the littoral environment and can be integrated into airborne ASW systems. E-field sensors can be configured to fit into"A"-size buoys for airborne deployment, supporting surveillance and attack missions. In the littoral,… More

The Tactical Counter Concealment Aerial Sensors (TC-CAS) such as the Tactical Reconnaissance and Counter-Concealment Enabled Radar (TRACER) are designed to penetrate foliage, camouflage netting, and even structures to detect concealed targets. The systems operate in the VHF, UHF and L-band… More

The DoD is developing a number of radars to detect and track surface targets including vehicles and dismounts as well image targets using synthetic aperture radar modes. These system achieves wide-area surveillance for dismounts by operating on stationary platforms (helicopter) which eliminates… More

The Naval tactical submarine environment poses a complex set of computing requirements unique in many aspects to the particular environment. However, along with the uniqueness of some of the submarine specific requirements comes other more common necessities found across many of the large Department… More

ABSTRACT: Radars have long been an important sensor used on the battlefield for detecting and tracking adversary movements as well as for imaging and target identification. One of the primary factors that determines the performance of a radar is the signal processing algorithms used to detect… More

ISL in Phase 1 will calculate electromagnetic source signatures for both nuclear and non-nuclear underground tests (UGTs). We will also establish methods and computer algorithms for calculating the electromagnetic pulse (EMP) caused by the detonation, at any receiver location, as it propagates… More

ABSTRACT: Radar sensors provide an important capability for combat missions involving air-to-air engagement of enemy aircraft. The main benefit of radar is the ability to detect targets at long stand-off ranges in all weather conditions. The main disadvantage is that radar transmissions are… More

Ground moving target indication (GMTI) and surface moving target indication (SMTI) radar are extensively used for the purpose of detecting and tracking dismounts and moving vehicles over land and water. SMTI radar offers the potential for all-weather day-night persistent detection of surface targets… More

ABSTRACT: Large numbers of intelligence, surveillance, and reconnaissance (ISR) sensors spanning a number of different phenomenologies (e.g., radio frequency and optics) are currently employed in support of the global war on terror. While these sensors provide data streams that contain a wealth of… More

Bistatic radar processing by airborne signals intelligence (SIGINT) and other intelligence, surveillance, reconnaissance (ISR) platforms affords covert, passive exploitation of adversary or own-force radar systems to improve tactical situational awareness and fused intelligence products.… More

ISL Inc. teamed with APS and ERAPSCO in Phase I to explore the benefits of an underwater sensor that collects both acoustic and electric field (E-field) signals. Exploitation of both signals offers new possibilities for sensor cueing, data fusion, and classification. In Phase II, data were collected… More

A wide variety of unmanned air vehicles (UAVs) carrying various sensors are increasingly deployed on today"s battlefield for intelligence, surveillance and reconnaissance (ISR) missions. These UAV platforms provide a wealth of ISR data mainly captured with video sensors. These video sensors… More

This Phase 2 research is directed towards designing electrodes for electric field (E-field) sensing technology that will be incorporated into the design for an air-droppable, A-size acoustic/E-field combination sonobuoy (designated the"E-Buoy"). The electrodes are part of a 3-axis E-field… More