Propagation Research Associates (PRA) introduces an innovative system that willcorrect angle of arrival error for radars tracking long range, low elevation targets.The correction improvement will be an order of magnitude improvement over existingmodel based measurements and will extend time-lines… More

"Propagation Research Associates (PRA) introduces two innovative tomographic techniques, based on ground based GPS satellite signal measurements, that significantly improve angle of arrival error correction for radars tracking long range, low elevationtargets. These tomographic techniques provide… More

Propagation Research Associates (PRA) proposes an innovative system that will correct angle-of-arrival error for radars tracking long range, low elevation targets. The correction improvement will be an order of magnitude improvement over existing model based measurements and will extend time-lines… More

Propagation Research Associates, Inc., (PRA) proposes to develop radar polarimeter technology that will instantaneously measure the parameters of the Stokes vector or Polarization Scattering Matrix (PSM) of a target without requiring additional antennas or antenna elements in Missile Defense… More

Propagation Research Associates, Inc., (PRA) proposes a Precision Pulse Positioning System (3PS) technology that provides a multi-function capability for force protection including the guidance of multiple low-cost blue interceptors engaging multiple targets, the resolution of the blue air picture,… More

Propagation Research Associates, Inc., (PRA) has combined its unique expertise in atmospheric physics and radar signal propagation to develop the Enhanced Tropospheric Effects Compensation (ETEC) System that will compensate for tropospheric bending errors when tracking long-range, low-elevation… More

Propagation Research Associates, Inc., (PRA) introduces two innovative algorithms to reduce fire control and missile filter transients in short time-of-flight guided missile engagements. A class of Smoothed Iterated Filters is developed as a more efficient implementation of the forward-backward… More

Propagation Research Associates, Inc., (PRA) proposes to extend and experimentally validate the results of the Phase I development of the Precision Pulse Positioning System (3PS) technology, which provides a multi-function capability for US Army Force Protection including the guidance of blue… More

Propagation Research Associates, Inc., (PRA) proposes to develop a software/hardware-in-the-loop (S/HWIL) capability that will implement the PRA Fast Algorithms for State Estimation (FASE) in a real-time environment. PRA developed a maximum likelihood estimator and a smoothed iterated filter to… More

Propagation Research Associates, Inc., (PRA) proposes to enhance the Precision Pulse Positioning System (3PS) that was developed on previous SBIR contracts to produce a solution for position and orientation of battlefield platforms. The Precision Pulse Positioning System (3PS) technology will… More

PRA proposes to team with JPL to design the Total Atmospheric Effects Mitigation (TAEM) System to include both ionospheric and tropospheric mitigation. This concept builds on PRA's innovative measurement technologies originally developed for the ETEC System and the ionospheric electron density… More

PRA proposes to develop a wideband adaptive digital beamforming solution to autonomously cancel multiple jammers at various locations, bandwidths, and center frequencies. The wide waveform bandwidths desired for fine range resolution in current and future phased-array systems impact the performance… More

Propagation Research Associates, Inc., (PRA) proposes to develop a combination of waveforms and beamforming techniques that will mitigate both broadband noise and coherent jamming. PRA will focus the development of ECCM techniques applied to the Firefinder EQ-36 radar using the Multi-Mission Radar… More

Propagation Research Associates, Inc., (PRA) proposes an innovative class of algorithms for ionospheric and tropospheric scintillation effects mitigation that will improve target tracking and handover performance in early warning and tracking Ballistic Missile Defense (BMD) radars. One issue in BMD… More

PRA proposes to team with JPL to develop the Total Atmospheric Effects Mitigation (TAEM) System to include both ionospheric and tropospheric mitigation for space surveillance radar (SSR) performance enhancement. This concept builds on PRA's innovative measurement technologies originally developed… More

Propagation Research Associates, Inc., (PRA) proposes the Training Environment Positioning and Orientation System (TEPOS) effort to provide accurate orientation and position information for platforms (participants and devices) within an immersive training environment. Utilizing waveform diversity,… More

Propagation Research Associates, Inc., (PRA) proposes to continue its Phase I teaming relationship with Lockheed Martin to develop and demonstrate atmospheric effects mitigation metrics and algorithms for improved Ballistic Missile Defense (BMD) radar tracking and handover. PRA proposes to further… More

Propagation Research Associates, Inc., (PRA) proposes to develop multi-spectral track correlation algorithms to improve boost phase track radar-to-radar and optical-to-radar track correlation for multiple sensor fusion. These algorithms will enable enhanced effectiveness in track correlation… More

Propagation Research Associates, Inc. (PRA) applied two technologies developed on previous SBIR contracts to develop a Phase I design for a battlefield platform position and orientation determination system. The PRA Precision Pulse Positioning System (3PS) technology provides precise… More

Propagation Research Associates, Inc., (PRA) proposes to develop an Electronic Protection (EP) capability for ground based radar that will mitigate both coherent and noise jammers. For the Phase II effort, PRA proposes to develop a combination of waveforms and beamforming techniques that will… More

There is a strong correlation between cloud-to-ground (CG) lightning and the altitude of the 40-dBZ radar reflectivity levels with respect to the height of the -100C level. T he proposed Phase I effort will develop an algorithm for lightning probability based upon these studies, perform basic… More

Propagation Research Associates, Inc. proposes to leverage technology developed in a previous SBIR projects to develop the Training Environment Position and Orientation System (TEPOS) for determination of the position and orientation of each participant's head and limbs as well as devices such as a… More

Propagation Research Associates, Inc., (PRA) proposes an innovative distributed aperture radar technology that uses waveform diversity for effective implementation of fire control and engagement capabilities to defeat multiple attacks from any direction. Force protection against low-cost, ballistic… More

Propagation Research Associates, Inc., (PRA) proposes two time-alignment techniques that can be implemented using existing radar systems to achieve coherency among multiple sea-based radar platforms operating in a multistatic configuration. For the first technique, the baseline multistatic… More

Propagation Research Associates, Inc., (PRA) proposes to design a receiver that will significantly reduce the sample rate required for a pulsed-Doppler EW sensing application using Compressive Sensing (CS) technology. The PRA Adaptive CS receiver will provide a compression in information space that… More

Propagation Research Associates, Inc., (PRA) proposes to develop a basic suite of algorithms that will mitigate clutter for ground based radars detecting ground moving targets. PRA will utilize data collected by the Army Research Laboratory Compact Radar (ARL-CR) to design and analyze clutter… More

Propagation Research Associates, Inc., (PRA) proposes to utilize its unique capabilities in atmospheric effects characterization, atmospheric effects mitigation, and track processing to develop multi-spectral track correlation algorithms to improve boost phase optical-to-radar track correlation for… More

Propagation Research Associates, Inc., (PRA) proposes to fabricate and demonstrate the performance of a prototype for the innovative distributed aperture radar technology designed in Phase I. The Phase I technology was designed to use waveform diversity for effective implementation of fire control… More

Propagation Research Associates, Inc., (PRA) teamed with The Boeing Company Naval Weapons Systems (NWS) group proposes to develop the Harpoon Enhanced Target Selectivity Algorithm (HETSA) to optimize target selection in a Harpoon system using a track-while-scan radar. In particular, PRA will… More

Propagation Research Associates, Inc., teamed with Ultra Electronics UnderSea Sensor Systems Inc., with support from Boeing Integrated Defense Systems proposes to design and assess the performance of a Sonobuoy Location System (SLS) that implements the latest digital synchronization technology to… More

Propagation Research Associates, Inc., (PRA) and Duke University propose to extend the recent developments of matched filtered chaos into a low-cost high range-resolution chaotic waveform radar. In the Phase I effort, PRA and Duke will design the radar system and build a prototype waveform… More

ABSTRACT: Propagation Research Associates, Inc., (PRA) and the Georgia Tech Research Institute (GTRI) are teamed to propose an innovative holographic receiver and processing technology for enhanced radar electronic protection. PRA/GTRI will investigate applying holographic processing to Synthetic… More

Propagation Research Associates, Inc., (PRA) proposes to develop a real-time error correction processor using multimode tracking for over the horizon radar. In particular, PRA will leverage its extensive experience in propagation effects and tracking algorithms coupled with target selectivity… More

Propagation Research Associates, Inc., (PRA) proposes to utilize its unique capabilities in atmospheric effects characterization, atmospheric effects mitigation, and track processing to develop multispectral track correlation algorithms to improve boost phase optical-to-radar track correlation for… More

Propagation Research Associates, Inc., (PRA) proposes to expand upon the results from the Phase I effort by continuing to improve upon the basic suite of algorithms that will mitigate clutter for ground based radars detecting ground moving targets and by integrating the clutter mitigation algorithms… More

Propagation Research Associates, Inc., (PRA) proposes to utilize its unique capabilities in atmospheric effects characterization and GPS signal processing to develop algorithms that nowcast ionospheric scintillation at GPS frequencies. To this end, PRA proposes to partner with the Jet Propulsion… More

Propagation Research Associates, Inc., (PRA) proposes to utilize its unique capabilities in atmospheric effects characterization, atmospheric effects mitigation, and track processing to characterize and improve tracking and object classification under conditions of ionospheric scintillation for… More

ABSTRACT: Propagation Research Associates, Inc. (PRA) teamed with FLIR (previously ICx) proposes to leverage the work performed under a previous Phase II contract that involved clutter mitigation for ground based ground moving target radars. PRA plans to integrate automatic target recognition… More