126 citations · 282 across the 10 of their papers we have counts for
10 papers
The SHARPEx space-to-space VLBI experiment
Freek Roelofs, Christiaan Brinkerink, Albert Catalan Artigas +16
Space is the next frontier for ultra-high resolution imaging of astrophysical sources with very long baseline interferometry (VLBI). The limited size of the Earth and atmospheric a…
Instrument-Level Validation of Upper Sideband Syntonization Concept
Volodymyr Kudriashov, Manuel Martin-Neira
Upper Sideband Syntonization (USBS) is a two-way frequency-transfer concept proposed by the European Space Agency for distributed space radio interferometric systems. Previous inve…
Design of optimal low-thrust manoeuvres for remote sensing multi-satellite formation flying in low Earth orbit
Francesca Scala, Gabriella Gaias, Camilla Colombo +1
This paper presents a strategy for optimal manoeuvre design of multi-satellite formation flying in low Earth orbit environment, with the aim of providing a tool for mission operati…
Laboratory Demonstration of the Local Oscillator Concept for the Event Horizon Imager
V. Kudriashov, M. Martin-Neira, E. Lia +7
Black hole imaging challenges the 3rd generation space VLBI, the Very Long Baseline Interferometry, to operate on a 500 GHz band. The coherent integration time needed here is 450 s…
System Design for the Event Horizon Imaging Experiment Using the PECMEO Concept
V. Kudriashov, M. Martin-Neira, I. Barat +4
The concept for space interferometry from Polar or Equatorial Circular Medium Earth Orbits (the PECMEO concept) is a promising way to acquire the image of the "shadow" of the event…
An Event Horizon Imager (EHI) Mission Concept Utilizing Medium Earth Orbit Sub-mm Interferometry
V. Kudriashov, M. Martin-Neira, F. Roelofs +17
Submillimeter interferometry has the potential to image supermassive black holes on event horizon scales, providing tests of the theory of general relativity and increasing our und…
On the prospects of imaging Sagittarius A* from space
Freek Roelofs, Heino Falcke, Christiaan Brinkerink +8
Very Long Baseline Interferometry (VLBI) at sub-millimeter waves has the potential to image the shadow of the black hole in the Galactic Center, Sagittarius A* (Sgr A*), and thereb…
Simulations of imaging the event horizon of Sagittarius A* from space
Freek Roelofs, Heino Falcke, Christiaan Brinkerink +8
It has been proposed that Very Long Baseline Interferometry (VLBI) at sub-millimeter waves will allow us to image the shadow of the black hole in the center of our Milky Way, Sagit…
The Eddy Experiment: accurate GNSS-R ocean altimetry from low altitude aircraft
G. Ruffini, F. Soulat, M. Caparrini +2
During the Eddy Experiment, two synchronous GPS receivers were flown at 1 km altitude to collect L1 signals and their reflections from the sea surface for assessment of altimetric…
The GNSS-R Eddy Experiment I: Altimetry from Low Altitude Aircraft
G. Ruffini, F. Soulat, M. Caparrini +2
We report results from the Eddy Experiment, where a synchronous GPS receiver pair was flown on an aircraft to collect sampled L1 signals and their reflections from the sea surface…