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Interferometry imaging technique for accurate deep-space probe positioning
- Source :
- Advances in Space Research. 60:2847-2854
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Very long baseline interferometry (VLBI) is a radio astronomy tool with very high spatial resolution. It uses two or more radio telescopes to track the faraway object and gets its visibility. The intensity distribution image of radio source can be obtained by the inverse Fourier transformation of the visibilities sampled on UV plane perpendicular to the line of sight. Chinese VLBI Network (CVN) consists of 5 radio telescopes, and its highest spatial resolution is equivalent to that of a ∼3000 km diameters single dish antenna. This paper introduces the interferometry imaging principle, the imaging results of ChangE lunar and Mars Express probes. The measured ChangE-3 (CE-3) Rover relative position accuracy is about 1 m by this method. The 1 m accuracy is verified by comparisons with Rover null position and the onboard stereo vision measurement results. The successful imaging of spacecraft indicates that the interferometry imaging technology can be used for accurate spacecraft positioning in the future.
- Subjects :
- Parabolic antenna
Atmospheric Science
Astrophysics::High Energy Astrophysical Phenomena
Aperture synthesis
Aerospace Engineering
Astrophysics::Cosmology and Extragalactic Astrophysics
NASA Deep Space Network
010502 geochemistry & geophysics
01 natural sciences
Radio telescope
Optics
0103 physical sciences
Very-long-baseline interferometry
010303 astronomy & astrophysics
Image resolution
0105 earth and related environmental sciences
Remote sensing
Physics
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Interferometry
Geophysics
Space and Planetary Science
Physics::Space Physics
General Earth and Planetary Sciences
business
Radio astronomy
Subjects
Details
- ISSN :
- 02731177
- Volume :
- 60
- Database :
- OpenAIRE
- Journal :
- Advances in Space Research
- Accession number :
- edsair.doi...........0a5b5c5c449f33b807d22972d59c4631