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Predictors of stroke volume improvement with AV-optimized conduction system pacing in patients with AV dromotropathy. [PDF]

ESC Heart Fail
Zupan Mežnar A, Žlahtič T, Mrak M, Ivanovski M, Žižek D.   +4 more
europepmc   +1 more source

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The delay/Doppler radar altimeter

IEEE Transactions on Geoscience and Remote Sensing, 1998
The key innovation in the delay/Doppler radar altimeter is delay compensation, analogous to range curvature correction in a burst-mode synthetic aperture radar (SAR). Following delay compensation, height estimates are sorted by Doppler frequency, and integrated in parallel. More equivalent looks are accumulated than in a conventional altimeter.
R Keith Raney
exaly   +2 more sources

Joint estimation of delay, Doppler, and Doppler rate

IEEE Transactions on Information Theory, 1960
The methods of inverse probability have been used by Woodward and others to obtain lower bounds on variances of radar parameter estimators. Previous results on the lower bounds of variances of delay and Doppler estimators have assumed that the reflecting object travels with a constant line of sight velocity and does not cause scintillation in the radar
P Bello
exaly   +2 more sources

Diversity waveform sets for delay-Doppler imaging

IEEE Transactions on Information Theory, 1998
Summary: Properties of the ambiguity function and the uncertainty relation of Fourier transforms assert fundamental limitations on the ability of any single radar waveform of constrained time-bandwidth product to distinguish two or more targets closely spaced in both time-delay (range) and Doppler-shift (radial velocity).
M R Bell
exaly   +3 more sources

Delay-doppler pocs for specular multipath

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
A method is presented for resolving delay and Doppler specular multipath components using an extension of a previously developed projection onto convex sets (POCS) algorithm. To improve performance and convergence speed, a matched-filter based support constraint is incorporated into the variance of the residual constraint in the style of constrained ...
Douglas D. Colclough, Edward L. Titlebaum   +1 more
openaire   +2 more sources