Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 99.88K | Year: 2002
70084 Current microwave radiometer designs are inadequate for measuring low atmospheric water vapor concentrations crucial to global climate research. This project will develop a new design that will provide reliable and accurate measurements of low water vapor concentration and will also reduce microwave radiometer size, power consumption, and cost. Mass production electronic techniques and monolithic microwave integrated circuit (MMIC) technology will be implemented in a modular design. Phase I will determine an optimum modular filter bank MMIC radiometer design. Filter performance will be modeled and improved, and the effect of filter characteristics upon spectral sampling will be determined. Prototype filter modules, including amplifiers and detectors, will be modeled, designed, constructed, and tested. Various approaches to radiometer calibration will be explored. Commercial Applications and Other Benefits as described by the awardee: National weather services are evaluating the use of radiometric profilers for operational forecasting. Radiometric profiler observations could also be used to improve chemical, biological, and nuclear dispersion forecasting; to improve long-range artillery accuracy; and for detection of radar ducting and aircraft icing conditions. Radiometers also could be used for the detection of buried objects.
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 68.15K | Year: 2000
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 99.84K | Year: 1997
It is known that atmospheric observations by microwave radiometers can predict and measure satellite link losses. These instruments, however, have historically been costly, bulky, and somewhat fragile, and therefore not desirable for monitoring satellite link conditions. Radiometries is proposing herein to modify an inexpensive monolithic microwave integrated circuit (MMIC) receiver currently manufactured for the telecomunications industry into a radiometer. Radiometries has investigated radiometer, microbarometer and surface temperature data from several field experiments, and finds that gradients in the water vapor field occur, and high frequency components appear on all of these data in advance of unstable weather, cloudiness, and rain events. These precursors are presumably due to increase in water vapor structure, and to propagation of acoustic and gravity waves from the impending weather. We believe that these signatures can be characterized with wavelet transforms, and therefore be utilized as predictors of buildup of weather. Radiometries Corporation proposes a novel method herein for forecasting satellite link losses. Conically scanned low angle data from a water vapor/cloud liquid water radiometer, surface wind and direction, surface temperature, satellite link signal to noise (Eb/No) information, and a sensitive barometer date will be processed utilizing neural network methods. We believe this will result in a robust predictive system.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase I | Award Amount: 119.89K | Year: 2001
New developments in atmospheric sensing and modeling present the opportunity for significant advancements in local weather modeling and forecasting. New sensors include wind radar, microwave profiler and GPS networks. These sensors provide continuous wind,temperature and humidity measurements. We propose in Phase I to demonstrate the assimilation of these data into high-resolution weather models and to evaluate the potential of the resulting weather forecasts for military and commercial applications. If theresults are promising, we will propose in Phase II to develop a turnkey system using these new data types for local weather modeling and forecasting.Turnkey systems for local weather modeling can be used to improve artillery and rocket accuracy, to predictatmospheric dispersion of chemical, biological and nuclear materials, and for battlefield visibility and weather forecasting. Similarly, commercial and civil applications include local weather forecasting for efficient and safe management of sporting andother outdoor events, construction projects, airports, space ports, and ground transportation.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 729.36K | Year: 2002
In Phase I we demonstrated that tropospheric wind, temperature, humidity and cloud liquid profiles can improve local weather forecasting. We propose in Phase II to develop "Nowcaster Plus", a turnkey local weather forecast system using local troposphericprofile and regional GPS data to significantly advance forecast skill. Local tropospheric soundings are obtained by a wind radar and a microwave profiler. Regional constraints on three dimensional refractivity are obtained by analysis of slant delays froma GPS network. Nowcaster Plus uses regional model, tropospheric profile, slant GPS and other atmospheric data, as available. Nowcaster Plus has commercial applications in airport operations, construction, agriculture, outdoor sporting and entertainment,electric power management and weather risk financial transactions including weather derivatives. It has military applications in artillery and rocket accuracy, forecasting of battlefield ceiling, visibility, and aircraft icing hazards, and atmosphericdispersion of hazardous materials.