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astrothesaurus / UAT

The Unified Astronomy Thesaurus is an open, interoperable and community-supported thesaurus of astronomical and astrophysical concepts and their relationships.
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New Concept: Delay-Dopper Imaging #272

Open mkelley opened 5 years ago

mkelley commented 5 years ago

Name the new concept Delay-Doppler imaging

Describe the concept A specific technique in "Radar astronomy," delay-Doppler imaging can determine size, shape, rotation, and radar albedo for a spatially resolved object.

Describe where the concept fits within the existing hierarchy Observational astronomy : Astronomical methods : Radar astronomy : Delay-Doppler imaging

Provide 1-3 supporting articles 2010Icar..207..499H 2004come.book..265H 1992Sci...258..640H

BartlettAstro commented 4 months ago

@mkelley can you provide a definition from an authoritative source? We are trying to ensure new entries have formal definitions.

@sjarmak do you have any suggestions on this concept?

sjarmak commented 4 months ago

I agree with the suggested hierarchy. Michael Kelley is a fairly authoritative source on this, but if part of the definition needs to have a reference or more formal language around the physical process involved with delay-doppler imaging we could use,

"A specific technique in "Radar astronomy," delay-Doppler imaging can determine size, shape, rotation, and radar albedo for a spatially resolved object. To spatially resolve the object, the target is illuminated by a series of transmitted pulses. The return for each pulse is a superposition of reflections from various locations on the target, with each location affecting the pulse by introducing both a delay and a Doppler shift. The returns are processed to produce an image of the target." the latter part comes from Donald L. Snyder 1987 Semiannual progress report.

mkelley commented 4 months ago

To my knowledge this is a good definition. I can provide or contact a few people who actually work with radar data, if you want a more detailed review.