![]() ![]() Compare the performance of the proposed algorithm to standard time-frequency estimators applied to the same data sets. Apply the complex RPEM algorithm to synthesized ISAR data using the above simulator. Develop and extend a complex, recursive-in-time, time- frequency parameter estimator based on the recursive prediction error method (RPEM) using the underlying Gauss- Newton algorithms. Our goals for the continued effort are to: 1. It does this by bouncing a microwave signal off a desired target and analyzing how the objects motion has altered the frequency of the returned signal. This algorithm is easily extended to recursive solution and will probably become part of the overall recursive processing approach to solve the ISAR imaging problem. It should also be noted that we developed a batch minimum variance translational motion compensation (TMC) algorithm to estimate the radial components of target motion (see Section IV). We have achieved all of these goals during the Phase I of the project and plan to complete the overall development, application and comparison of the parametric approach to other time-frequency estimators (STFT, etc.) on our synthesized vehicular data sets during the next phase of funding. Initiate the development of the recursive algorithm. Apply the standard time-frequency short-term Fourier transform (STFT) estimator, initially to a synthesized data set and 4. Develop a parametric, recursive-in-time approach to the ISAR target imaging more » problem 3. Develop an ISAR stepped-frequency waveform (SFWF) radar simulator based on a point scatterer vehicular target model incorporating both translational and rotational motion 2. View other Maui County HI radar models including Base, Composite, Storm Motion. Our short term (Phase I) goals were to: 1. See the latest Hawaii Doppler radar weather map including areas of rain. The primary objective of this research was aimed at developing an alternative time-frequency approach which is recursive-in-time to be applied to the Inverse Synthethic Aperture Radar (ISAR) imaging problem discussed subsequently. ![]() This report summarizes the work performed for the Office of the Chief of Naval Research (ONR) during the period of 1 September 1997 through 31 December 1997. (GA-ASI), an affiliate of privately-held General Atomics, is a leading manufacturer of Remotely Piloted Aircraft (RPA) systems, radars, and electro-optic and related mission systems, including the Predator/Gray Eagle-series and Lynx Multi-mode Radar. General Atomics Aeronautical Systems, Inc. ![]() (GA-ASI) Mission Systems under Cooperative Research and Development Agreement (CRADA) SC08/01749 between Sandia National Laboratories and GA-ASI. Acknowledgements This report was funded by General Atomics Aeronautical Systems, Inc. While the information herein is not new to more » the literature, its collection into a single report hopes to offer some value in reducing the 'seek time'. Ultimately, this leads to a characterization of parameters that offer optimum performance for the overall MWAS radar system. This report identifies and explores those characteristics and limits, and how they depend on hardware system parameters and environmental conditions. Proper design and operation of an airborne Maritime Wide Area Search (MWAS) radar requires an understanding of system performance characteristics and limitations, and furthermore understanding the trades amongst a large number of interdependent system parameters. One of the earliest applications for radar was to search for and find maritime vessels on the open sea. Got radar? You do now: Grab your mobile device and head to .= , Be sure to check out these video tutorials and frequently asked questions to help you get started using the site. We added new features to the radar viewer based on feedback we received from the public and emergency management community. The Current Radar map shows areas of current precipitation (rain, mixed, or snow). The webpage is more reliable now that it's on an operationally supported system 24/7. The new page’s infrastructure allows for easy integration of new datasets, like satellite imagery, in the future and Radar animation loops can be saved, shared and used on social media Our interactive map allows you to see the local & national. For times when a single radar is out of service, you still have coverage since radar beams overlap Ībility to customize data to any domain, and data layer preferences can be saved or bookmarked See the latest United States Doppler radar weather map including areas of rain, snow and ice. More radar data, including 159 NEXRAD Doppler radars and 45 Terminal Doppler Weather Radars. The radar webpage can be saved on your mobile device home screen just like an app, so you can use this powerful weather monitoring tool on the go.Īccess to certain dual-polarization radar products to help differentiate between precipitation types, such as rain and snow ![]()
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