Advanced surveillance systems will be required to operate in a trans-attack and post-attack environment. the high altitude clutter for such an environment is not accurately characterized. the proposed optical technique provides a real-time adaptive capability to reject nuclear clutter and optimize… More

Intermediate altitude (\50-100 km) nuclear events produce a strong shock. the material heated by this shock radiates in many ir molecular bands. accurate modeling of the ir emission is possible only if the gas structure near the shock can be determined. a numerical hydrodynamics code that uses a… More

A field of view monitor is proposed to augment a balloonborne lidar system which will be used to study atmospheric properties in the altitude region from 35 km to the ground. the monitor will provide information regarding terrain and cloud conditions in the lidar field of view, and such knowledge… More

The feasibility of adding a raman detection system, for the measurement of atmospheric constituents, to an existing balloonborne lidar payload will be investigated. the balloonborne liar is currently used to make rayleigh/mie atmospheric backscatter measurements. the feasibility study will include,… More

The work of mandelbrot has shown that fractals can be used effectively to model with computer graphics many types of natural shapes and figures. these include geographical features as well as clouds and turbulent fluid behavior. it is proposed to apply fractal geometry in a purely phenomenological… More

The primary technical objective of the proposed research is to develop an algorithm that will remove the stiffness problem inherent in sets of ordinary differential equations for the chemical kinetics of atmospheric gases. the algorithm shall be such as to be easily incorporated into a nuclear… More

This is a feasibility study to evaluate the development of a technique for rapid deposition of energy in the upper atmosphere at levels comparable with megaton detonations at 200 kilometers to provide baseline data for predicting infrared emissions from high altitude nuclear detonations. previous… More

A number of nasa satellites have obtained data which can be used for determining ambient atmospheric density structure parameters. among them are the atmospheric explorer series -c, -d, and -e) and the solar mesospheric explorer (sme). it is proposed to analyze these data to obtain estimates of… More

It is proposed to add an innovative variable polarization optical system to the air force able (atmospheric backscatter experiment) lidar system. this capability for real-time, range-resolved polarization analysis of atmospheric backscatter would be unique to the able lidar system. it would enable… More

There are only a few radiometric standards available in the 115-350 nm wavelength region. among them are the argon mini-arc and the deuterium lamp. both lamps provide stable sources of uv/vuv radiation, and can be calibrated both in radiance and irradiance. however, each has disadvantages that limit… More

It has been recognized by both the air force and nasa that space debris in the growing hazard to space operations. of particular importance are debris in the 0.1 - 10 cm size range. over this range, debris databases (and consequently debris madels) are deficient. also, these particile sizes are… More

It is proposed to develop an innovative targeting/tracking lidar system which will have the capability of acquiring, imaging and tracking designed targets and backrounds. the lidar system will be able to operate over multiple wavelengths and have the capability for polarization analysis of the… More

As the USAF works towards extending the performance envelope of its moder high performance aircraft and advanced re-entry vehicles, it is beginning to encounter multiple problems created by the presence of high temperature plasmas. The source of the plasma may vary from a jet or rocket engine plume… More

This exploratory development is directed toward finding new methods of using artificially modified ionospheric regions for extending and enhancing communication (C3I) and surveillance (radar) capabilities. Specifically, the investigation, starting with a Phase I feasibility and planning effort and… More

Using time-synchronized optical sources and a constellation of receivers, Visidyne proposes to design and demonstrate a remote metrology system capable of measuring the six degrees of freedom of a Head-Mounted Display System and do it with minimal latency. The approach closely parallels the Global… More

The use of Kinetic Energy Weapons (KEW) against theater missile threats, such as the SCUD, require fast and accurate aim point determination to maximize the kill probability. It is proposed to incorporate an innovative active three-dimensional (3-D) imager in each KEW seeker to significantly improve… More

Visidyne proposes an effort leading to improved tools for measuring the subsurface spatial structure and chemistry of highly turbid media such as mammalian tissue. The technology uses optical photon density waves from laser sources, intensity modulated at microwave frequencies to probe these media.… More

Using optical tools such a laser interferometers, the Multiple Degree of Freedom Measurement(MDFM) System developed by the University of Michigan under the ManTech program has demonstrated a high precision calibration capability for Coordinate Measurement Machines (CMMs). Building on that effort… More

This Phase I proposal, submitted under the SBIR component of the ARPA TRP proposes the development of a family of affordable, high precision, self-calibrating, environmentally robust, Fiber Optic Position Transducers. Visidyne's ultra high resolution optical radar technology provides the basis for… More

An optical sensor capable of producing 3-dimensional time resolved density maps characteristic of shock wavefronts at Mhz sampling rates is proposed. Each map is obtained from simultaneous measurements obtained with a novel refractometer capable of measuring integrated density fluctuations in air… More

A novel low-cost evanescent wave nucleic acid detector of great speed and dynamic range is proposed. The detector is based around an optical waveguide and a self-compensating interferometer design in contrast to fluorescence based biosensors. The sensor is inherently stable to vibration and… More

Visidyne proposes an effort leading to improved tools for measuring the subsurface spatial structure and chemistry of highly turbid media such as mammalian tissue. The technology uses optical photon density waves from laser sources, intensity modulated at microwave frequencies to probe these media.… More

Previous Doppler lidar statistical measurements of mechanical turbulence have only been successful in discerning moderate to strong wind field turbulence. This limitation is related to the transmitter pulse duration which is restricted by both the available laser technology and the range resolution… More

Using newly available materials and component technologies, Visidyne proposes to demonstrate the feasibility of a novel monolithic sensor based on the photonic sensing of a magnetic field. The proposed sensor is capable of routine high sensitivity at bandwidths in excess of 500 kHz, and large… More

We propose to critically evaluate by measurement, analysis, and an engineering study the potential for adaptation of Visidyne's intensity modulated diode laser technology to the construction of 1) a quasi-cw lidar suitable for UAV mounting and with sufficient sensitivity to remotely detect evaluated… More

Not Available This proposal addresses the problem of creating a low profile antenna of relatively small electrical size that can be made conformal and integral to a variety of airborne structures and yet achieve wide band performance. As the candidate for low-profile/conformal antennas for… More

Not Available The introduction of Commercial Off The Shelf (COTS) products into ship systems represents an enormous challenge that impacts virtually all elements of Integration and Test (I&T). While the use of COTS products is not a new concept to the Navy, its application to highly elaborate… More

Not Available Over 35 W of power can be generated by a single fiber laser in a coherent, diffraction-limited beam, with a high quantum efficiency over 85%. The output power of a single fiber laser is however limited by intrinsic non-linear effects. We propose to coherently combine several fiber… More

Visidyne proposes to critically assess the requirements for a phase processor to detect miniscule phase bumps hidden in the beat frequency signal from a pair of interfering optical beams, e.g., used to link proof masses on free flying satellites. These phase bumps, the result of a cosmological event… More

Visidyne proposes to demonstrate innovative technologies to locate points on a human body with sub-mm precision and a low latency. Small (potentially

This Small Business Innovative Research (SBIR) Phase I project deals with the need for improved angle encoders or resolvers for advanced automotive powertrains. The performance of powertrains for electric vehicles (EV's) and hybrid electrical vehicles (HEV's) as well as for such concepts now being… More

Visidyne proposes to address the design of a wideband, low noise photonic RF frontend to improve on the trade between a channel's signal-to-noise or capacity and its aggregate channel count. The underlying technology to do this is a photonic parametricamplifier, where an optical carrier is linearly… More

The large effective cross-section at optical wavelengths, of even small retroflectors makes them an attractive option for long distance ranging. Visidyne proposes to demonstrate, using an innovative combination of newly available optical component technologies, and advanced signal processing, the… More

Visidyne proposes to develop a high-fidelity, real-time Nuclear Optical Dynamic Digital Image Generator (NODDIG) to support the development and testing of algorithms for the mitigation of optical clutter in nuclear environments. The NODDIG concept is asoftware/hardware digital scene generator. It… More

Proposed are optical tools for precision station keeping and communication between multiple satellites or balloons flying in formation. Using optical elements such as energy efficient pulsed or CW laser sources, fast detectors and large field retroreflectors in an innovative fashion, a wide range of… More

Proposed are optical tools for precision station keeping and communication between multiple satellites or balloons flying in formation. Using optical elements such as energy efficient pulsed or CW laser sources, fast detectors and large field retroreflectors in an innovative fashion, a wide range of… More

"The team of Visidyne, Inc. and Mission Research Corporation proposes to develop a high-fidelity, real-time Nuclear Optical Dynamic Digital Image Generator (NODDIG) to support the development and testing of algorithms for the mitigation of optical clutterin nuclear environments. The NODDIG concept… More

"The team of Visidyne, Inc. and Mission Research Corporation proposes to develop a high-fidelity, real-time Nuclear Optical Dynamic Digital Image Generator (NODDIG) to support the development and testing of algorithms for the mitigation of optical clutterin nuclear environments. The NODDIG concept… More

Visidyne proposes to demonstrate that photonics: diode lasers, optical delay lines and detector/receivers can be used to design RF oscillators, e.g., at X-band, with less phase noise in a smaller footprint and at lower power consumption than existing,all electronic designs. Low phase noise… More

Visidyne proposes to demonstrate that through an innovative mix of electro-optical and photonic technologies, an imaging, scannerless LADAR (or 3-D imager) can be designed and built that is a viable sensor for the terminal phase of guided kinetic energyweapons. Key elements in the mix are; a small,… More

Visidyne proposes to investigate a unique concept for a burst-modulated, flood-illumination LADAR to accomplish the 3-D imaging necessary to implement an effective short-range relative attitude sensor for the final phase of spacecraft rendezvous and docking. Recent advances in the areas of… More

The performance of a GPS receiver is critically dependent on its internal oscillator clock's long term stability, affecting time-to-first measurement and its short term, phase noise level, since it limits the ultimate precision with which a range incrementcan be recovered. Visidyne proposes to… More

Under the Phase I effort, Visidyne through a process of analysis, modeling, and experimental verification arrived an innovative design for a Photonic analog-to-digital converter (P-ADC). The design has excellent prospects of improving on the performance,resolution of present day and future… More

Visidyne has demonstrated during Phase I, through modeling and analyses, that an imaging, scannerless LADAR (or 3-D imager) can be designed and built that is a viable sensor for the terminal phase guidance of kinetic energy weapons. The technique combinesan innovative mix of electro-optical and… More

Visidyne proposes to develop a design for a small, lightweight, high resolution, in x, y, and z Doppler imager to assist in the guidance, navigation and control (GN&C) of satellites as for a chaser-target vehicle type scenario. It could therefore be used for rendezvous, circumnavigation, inspection… More

Visidyne proposes to demonstrate the utility of visible and IR sensors for detecting and characterizing bright targets through cloud layers. Visidyne proposes to take advantage of sensors routinely operated as part of the Department of Energy's Atmospheric Radiation Measurement (ARM) program at… More

Visidyne proposes to investigate an active optical 3D imaging LADAR as the sensor for an automated Landing Hazard Avoidance system for spacecraft landing on the Moon or Mars. Specifically, the LADAR utilizes low cost and electrically efficient laser diode illumination and a unique focal plane array… More

Visidyne, Incorporated, proposes to complete development of the Efficient Radiation Transport Testbed (ERTT), which combines the strengths of state-of-the-art programmable graphical processing units (GPUs) with standard correlated-k (CK) and line-by-line (LBL) methods for computing atmospheric… More

In Phase 1 Visidyne demonstrated the utility of its breadboard, ground-based, Sun and Aureole Measurement (SAMNET) sensor coupled with its state-of-the-science models for particle scattering for measuring and deriving the transmission and scattering properties of clouds. Knowledge of these… More

Visidyne's Phase I effort has established through modeling and analysis that a unique concept for an active optical 3-D Imager (or Imaging LADAR) has high potential for successful application as a hazard avoidance sensor for use by NASA spacecraft during landing on planetary surfaces. The Landing… More

Visidyne proposes a novel fiber optic sensor to measure the elongation of steam catapults used by the Navy for launching aircraft. The sensor, originally developed by Visidyne for use in environments found in and around jet aircraft engines, is completely passive at the measurement point and so can… More

Atmospheric particles act to cool the Earth by reflecting incoming solar radiation if they are small (e.g., aerosols), and they can either warm or cool the earth through thermal absorption and emission if they are large (e.g., cirrus) depending upon their altitude. Climate change monitoring and… More