Award Data

The complexity of Atmospheric Transport and Dispersion (ATD) modeling requires physically consistent weather data evolving in both space and time. Spatially and/or temporally averaged data found in climatological products is not suitable for ATD modeling. The proposed solution for providing “typical day” meteorological data couples innovative search techniques applied to long-range historical ...

Atmospheric and Environmental Research, Inc. proposes to develop a prototype threat-reduction system for the dispersion of a weapons-of-mass destruction warhead in the upper atmosphere. Our system will extend current DTRA atmospheric transport and dispersion capabilities into the 20-120 km altitude region. This will be accomplished using a combination of a zonally-averaged transport model of the s ...

Proliferation of the weapons of mass destruction such as nuclear weapons is a serious threat in the world today. Prevention of the spread of nuclear weapons has reached a state of heightened urgency in recent years, especially since the events on September 11, 2001 and its aftermath. Gamma ray spectrometers are an important tool in checking the proliferation of the nuclear weapons. Important re ...

U.S. forces working in low-level radiation environments have unsatisfactory choices for monitoring radiation exposure. A solid-state photomultiplier (SSPM) uses an array of silicon based avalanche photodiodes (APD) to collect light and produce a signal proportional to the amount of light collected. The ability to produce arrays of APD’s in a CMOS (Complimentary Metal Oxide Semiconductor) envir ...

The proposed muti-mode imaging system will allow a combination of X-ray Backscatter imaging (proven successful in finding IEDs in AS&E's Z Backscatter Van) and other sensor modalities, such as vapor/trace detection and video, to be mounted on a robotic platform(the iRobot R-Gator) such that the system can be quickly moved into location to examine a potential threat, including WMD dispersal devices ...

The accurate numerical prediction of hazardous airborne plumes requires two important capabilities. First, meteorological conditions at fine spatial scale both at the time of plume release as well as a few hours into the future, and second, quantification of this information in a statistically reliable probabilistic framework. The proposed study will use a combination of fine-scale ensemble re-fo ...

A longwire antenna module is proposed, incorporating a length reduction technique that yields 25-75% length reduction with minimal impact on gain. A resonant monopole antenna operating at 535kHz is approximately 440ft long; length reduction techniques will reduce this to between 69ft and 134ft depending upon the desired gain. A shorter/lighter longwire antenna will allow the aircraft to be more ...

An antenna system is proposed for the purpose of FM, TV-VHF, and TV-UHF PSYPOS broadcast applications. The antenna system incorporates a radiating structure that is small, light weight, and conformal. A circularly polarized beam is broadcast from an aircraft towards nadir, illuminating the region below the craft with a horizontally-polarized signal, yielding polarizations pointing in both the No ...

The Phase 2 objective is to provide NIST with a modular gauge head unit equipped with InsituTec's standing wave probe technology. The complete gauge head unit will be retrofitted to the NIST M48 which is one of the most precise measuring machines in the world. This unit will enable NIST to achieve the agency's program goal in dimensional metrology which is to provide microscale measurement capacit ...

The objective of this research is to develop beta versions of tools for automatically migrating radiation effects predicted in TCAD level tools to compact modeling tools. This transition will enable compact models that possess radiation effects to be quickly generated, which can then be used in circuit design activity. This approach is a substantial improvement over the current ad hoc approaches. ...