Overview and Status of the Space Interferometry Mission (SIM) Technology Development
Optical and infrared interferometry will open new vistas for astronomy over the next decade.
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Optical and infrared interferometry will open new vistas for astronomy over the next decade.
Satellite radar interferometry is a powerful technique to measure the surface velocity and topography of glacier ice. On ice shelves, a quadruple difference technique separates tidal motion from the steady creep flow deformation of ice.
The Space Interferometry Mission (SIM) is designed as a space-based optical interferometer operating in the visible waveband. This mission will open up many areas of astrophysics, via astrometry with unprecedented accuracy during its 5-year mission.
Optical and infrared interferometry will open new vistas for astronomy over the next decade.
The Interferometry Program Experiments (IPEX) I and II are a series of flight experiments designed to characterize microdynamics of structures in space.
Optical and infrared interferometry will open new vistas for astronomy over the next decade.
The Space Interferometry Mission (SIM) will be NASA's first space-based optical interferometer designed for precision astrometry.
The Space Interferometry Mission (SIM) is NASA's first space science interferometer, and will enable fundamental new discoveries in both galactic and extra-galactic astronomy, including cosmic distance scale...It demonstrates several key technologies...
Very high resolution spatial interferometry requires picometer level one-dimensional metrology,
Two spacecraft dedicated to Very Long Baseline Interferometry (VLBI) will be launched in 1996 and 1997 to make observations using baselines between the space telescopes and many of the world's ground radio telescopes.
The radio metric tracking technique known as Same-Beam Interferometry has been shown to improve orbit determination accuracy for the Magellan and Pioneer 12 Orbiter.
Space Very Long Baseline Interferometry (SVLBI) experiments using a TDRSS satellite have successfully demonstrated the capability of using spacecraft to extend the effective baseline length of VLBI observations beyond the diameter of the Earth, thereby improving the resolution for imaging of active galactic nuclei at centimeter wavelengths.
This paper summarizes the recent work in the fields of Synthetic Aperture Radar (SAR) polarimetry and Interferometry. These fields have seen very significant development during the last five years, and these fields are now well understood.
A new type of laser retroreflector has been developed for JPL's future Space Interferometry Mission. The retroreflector consists of an assembly of prisms to form multiple hollow cornercubes. This way the limited field of view (FOV) of about 60deg of a single corner can be overcome, to comply with the geometry of an optical truss.
We report on the geological interpretation of the mapping analysis of several successful radar experiments, which are part of a program to generate a high resolution digital elevation model (DEM) of the equatorial region of Venus between Phoebe Regio and far western Ovda Regio. These experiments used radar interferometry with Arecibo transmitting and Goldstone receiving.
During the past ten years, the NASA/JPL AIRSAR system has produced polarimetric and interferometric SAR data. SAR polarimetry is useful for characterizing scattering mechanisms while SAR interferometry yields high resolution topographic maps.
This study demonstrates that radar interferometry provides an important contribution towards understanding the dynamic deformation of volcanoes. By revealing large scale changes in their pre-eruption deformation rates, radar interfeometery could play an important role in volcano eruption monitoring.
In this paper, interferometry will mean the acquisition and cross-correlation of complex signals at two different ends of a baseline, but with the same receive and transmit polarization at each end.