Award Data

The Army, and other military and civilian organizations, have a need for large shelters that are air-transportable and rapidly erected in austere conditions. For example, the Army requires an Aviation Maintenance Shelter (AMS) having approximately 75 ft span. Recent advances in high pressure inflatable structures use a braiding process to fabricate seamless airbeams and to make curved airbeams e ...

A concept for a novel wideband Frequency Selective Limiter (FSL) using High Temperature Superconductors (HTS) is proposed. The device selectively limits the level of narrow band high power signals over a relatively wide frequency band without appreciable effect on the weak signals. Thus high dynamic range can be maintained for receiver systems designed to intercept weak signals over a wideband, wh ...

Fast tuning microwave synthesizer systems are required by the Army for the demodulation of waveforms encoded by spread spectrum techniques. These systems are required as a method of jamming, countermeasures to jamming, secure communications and as low phase noise sources for rapid tuned radar. Our novel approach to these requirements involves the optical heterodyne between two diode laser-pumpe ...

QRC, with subcontractor Texas Instruments, submits this proposal in response to SBIR A96-060 for Wideband Fast Switched RF Synthesizer. The current state of practice of advanced communication and radar systems is to use short on time emitters at any frequency in the in the RF spectrum for various systems. Therefore in support of ESM, ELINT, SIGINT and EA systems, it is necessary to have a method ...

The current market for fast switching frequency sythesizers is growing rapidly. Most synthesizers available today will not meet the stringent requirements for switching quickly, providing spectrally pure RF outputs and minimizing physical size and cost. As part of a current SBIR program, S.T. Research has developed a wideband, fast switching synthesizer, based on the use of broadband phase-locke ...

THE INTERACTIONS BETWEEN TARGETS AND THE BACKGROUND IN BOTH THE VISUAL AND THERMAL SPECTRAL BANDS ARE AFFECTED BY SEVERAL WEATHER RELATED VARIABLES. THE DCS TE-EX MODEL WAS ORIGINALLY DEVELOPED AS A FIRST PRINCIPLES MATHEMATICAL MODEL TO PREDICT THE RADIATED TEMPERATURE OF TARGETS IN A FIELD ENVIRONMENT. THE MODEL, BECAUSE IT IS A FIRST PRINCIPLES MODEL, CAN BE USED TO PREDICT RADIATED TEMPERATURE ...

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Systems & Processes Engineering Corporation (SPEC) proposes to develop a Waveform Agile Signal Processor (WASP) to support the next generation of fuzing systems and subsystems. WASP is designed to~provide high performance, waveform agile, adaptive signal processing for a variety of RF and optical fuze sensors. WASP is designed to support pulsed time domain, frequency domain, phase, direct sequen ...

THERE IS A REQUIREMENT FOR EFFECTIVE METHODS TO MITIGATE WIND INDUCED VIBRATION IN ANTENNA STRUCTURES. THESE VIBRATIONS CAUSE DISTORTION IN THE SIGNAL. CURRENT ANTENNA STRUCTURES ARE CONSTRUCTED FROM FRP TUBING BECAUSE OF ITS BENIGN ELECTROMAGNETIC PROPERTIES BUT THE MATERIAL, BECAUSE OF ITS LOW STIFFNESS AND DAMPING PROPERTIES, AGGRAVATES WIND-INDUCED VIBRATIONS. THE VIBRATIONS ARE CAUSED BY EITH ...

An SBIR project is proposed to develop a VMEbus compliant RF downconverter and digitizer. The RF downconverter provides direct digitization of signals in the 0 to 10 MHz frequency range and tuning and digitization wit a bandwidth of 10 MHz and a step size of 500 kHz within the 10 to 1800 MHz frequency range. The RF downconverter function is performed with a set of two moduels that are compatible w ...