37 citations · 72 across the 9 of their papers we have counts for
9 papers
Geometric Analysis of Doppler-Based Navigation with Low Earth Orbit Satellites
Carlos Caravaca Gallego, Pini Gurfil, Hector Rotstein
The increasing vulnerability of Global Navigation Satellite Systems has motivated renewed interest in Doppler-based navigation using low Earth orbit satellites, which can determine…
Analysis of the PPN Two-Body Problem Using Non-Osculating Orbital Elements
Pini Gurfil, Michael Efroimsky
The parameterised post-Newtonian (PPN) formalism is a weak-field slow-motion approximation for both GR and some of its generalisations. It permits various parameterisations of the…
Close encounters of Near Earth Objects with large asteroids
Anatoliy Ivantsov, Siegfried Eggl, Daniel Hestroffer +2
Close encounters of Near Earth Objects (NEOs) with large asteroids are a possible source of systematic errors in trajectory propagations and asteroid mitigation. It is, thus, neces…
Convex Feasibility Methods for Compressed Sensing
Avishy Carmi, Pini Gurfil
We present a computationally-efficient method for recovering sparse signals from a series of noisy observations, known as the problem of compressed sensing (CS). CS theory requires…
On The Behavior of Subgradient Projections Methods for Convex Feasibility Problems in Euclidean Spaces
Dan Butnariu, Yair Censor, Pini Gurfil +1
We study some methods of subgradient projections for solving a convex feasibility problem with general (not necessarily hyperplanes or half-spaces) convex sets in the inconsistent…
Long-term evolution of orbits about a precessing oblate planet. 3. A semianalytical and a purely numerical approach
Pini Gurfil, Valery Lainey, Michael Efroimsky
Construction of a theory of orbits about a precessing oblate planet, in terms of osculating elements defined in a frame of the equator of date, was started in Efroimsky and Goldrei…