The effects of sea clutteron sar images are very pronouned and impair target detection and identification. a technique called clean can be used to remove the effects of the discernible wave phenomena present in sar images, reduce sea clutter intensities and improve target detection. the proposed… More

The objective is to further define and specify a ground-based experiment designed by interspec, that will prove that a distributed array radar can operate coherently on transmit as well as received with full two-way gain. coherent operation on receive has already been demonstrated by the university… More

A methodology will be developed to that captures the important production, support, transport, and operating costs associated with monolithic and distributed sparce array space based radar. key cost drivers of these two approaches to space based radar are identified and parametric cost models… More

A concept is proposed for near-field focusing and scanning with a random distributed acoustic array for long range surveillance. the array may be several miles in diameter and focused within or outside its own boundaried providing improved target localization in both range and azimuth and rejecting… More

The overall goal of the project is to improve resolution when using large-aperture, phased linear arrays in clinical ultrasound. in particular, means will be developed to eliminate beam-forming errors caused by variations of sound velocity in the organs being imaged or by phase errorsin the system… More

The goal of this project is to develop a computer-based system that will provide continuous neurological function monitoring of patients in a surgical intensive care unit. the system will record, analyze, and track changes in both the background electroencephalogram (eeg) as well as sensoryevoked… More

This proposal is addressed to the asw problem of increasing probability of detection and target localization in long range surveillance using a passive underwater acoustic array. the innovative concept proposed is high speed, high resolution ocean acoustic imaging in two dimensions (range and… More

We propose to develop a novel signal processing architecture for the distributed sparse array (dsa) radar. the system is a space-based, thinned phased array radar in which each array element is a separate spacecraft (called a mini-radar). mini-radars cooperate to form a single coherent radar beam.… More

The objective is to assess radar synchronization and coherence techniques for a distributed sparse array (dsa) of spacecraft. the dsa represents the culmination of 12 years of research on the subject of cohering highly thinned, dispersed radar arrays by the valley forge research center (vfrc) and a… More

It has been shown that continuous neurological function monitoring can significantly improve the diagnoses, management, and outcome of neonatal intensive care unit patients. at present, this type of monitoring is not done on a routine basis due to technical inadequacies our innovation will overcome.… More

The full performance capability of a space based distributed sparse array (dsa) can be achieved only if techniques are developed that suppress clutter returns and the effect of jamming in the dsa sidelobes. the proposed program presents four techniques for suppressing the dsa sidelobe clutter while… More

We propose to conduct a study leading to the experimental comparison of the performance of self-survey techniques with adaptive beamforming in order to cohere large and distributed phased arrays. phase i will (1) analytically compare the two approaches, (2) assess equipment requirements, (3) analyze… More

Techniques are proposed for reducing the computational loading in digital beam forming radar (dbfr). these techniques involve reducing the dynamic range of the input signal by pre-processing before digitizing, then converting the signal to a polar coordinate representation to reduce processor… More

The objective of this project is to define the design principles of a smart phased array radar system which integrates the following functions (i) digital beamforming, (ii) self-monitoring of array performance, (iii) automatic detection and correction of common and correctable element failures, and… More

Our "self-cohering" methods permit increasing the receive aperture of a laser radar far beyond what conventional optical designs allow, thus achieving unprecedented resolution and range capabilities. a coherent aperture is formed from a number of much smaller subapertures without requiring strict… More