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SIFTER: Signal inversion for target extraction and registration
[1] Signal inversion for target extraction and registration (SIFTER) is a technique for enhanced radar target detection and coordinate registration (CR). The technique is currently being developedExpand
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Personal-computer-based system for real-time reconstruction of the three-dimensional ionosphere using data from diverse sources
[1] We present new capabilities of our system for monitoring the ionosphere over a fixed geographical area with dimensions of the order of several thousand kilometers. The system employs a nonlinearExpand
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Spectral and dispersion characteristics of travelling ionospheric disturbances as deduced from transionospheric sounding data
Abstract We have developed a statistical method of determining the dispersion and spectral properties of travelling ionospheric disturbances (TIDs) based on analyzing the power spectra and crossExpand
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Real‐time reconstruction of the three‐dimensional ionosphere using data from a network of GPS receivers
We present a system that processes phase and group delay time series from a network of dual-frequency GPS receivers and produces a dynamic ionospheric model that is consistent with all the input data. Expand
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Linear and nonlinear prediction techniques for short-term forecasting of HF fading signals
We apply the nonlinear predicting technique proposed by Farmer and Sidorovich to the fading time series obtained by the University of Illinois HF sounder. Expand
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Generalization of ionospheric tomography on diverse data sources: Reconstruction of the three-dimensional ionosphere from simultaneous vertical ionograms, backscatter ionograms, and total electron
An ionospheric reconstruction method is developed that is capable of simultaneously utilizing information from all possible sources of ionospheric measurement. We describe the method and demonstrateExpand
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Assimilation procedures for updating ionospheric profiles below the F2 peak
[1] This paper describes and compares two real-time assimilative ionospheric models, with an emphasis on their ability to provide accurate profiles of the electron density below the peak of the F2Expand
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Reconstruction of a three‐dimensional ionosphere from backscatter and vertical ionograms measured by over‐the‐horizon radar
A method for inversion of backscatter ionograms is described. Source data for the method consist of leading edge of backscatter ionograms from all azimuthal sectors of the backscatter sounder and theExpand
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Inversion of backscatter ionograms and TEC data for over-the-horizon radar
[1] Over-the-horizon radar (OTHR) uses ionospheric reflection to propagate HF transmissions to long range (∼500–5000 km). The ionosphere acts as a dynamic “mirror” that varies diurnally, seasonally,Expand
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Range rate–Doppler correlation for HF propagation in traveling ionospheric disturbance environments
[1] Using ionospheric sounding together with fast computational inverse processing, it is now possible to obtain good real-time ionospheric models for use in geolocation for over-the-horizon (OTH)Expand
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