Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/CampbelltagR1939tp.pdf Дата изменения: Fri Jul 2 16:05:21 2004 Дата индексирования: Sat Dec 22 23:31:05 2007 Кодировка: Поисковые слова: regolith

Proposal Identification No.:

R1939

Date Received:

2004-Feb-04 17:24:21

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 16 Hours

70-cm Wavelength Bistatic Radar Observations of the Lunar Highlands

Radar signals at 70-cm wavelength can p enetrate to depths of 5 m or more in the relatively low-loss, anorthositic regolith of the lunar highlands. This makes such observations particularly sensitive to mo dest changes in the regolith loss tangent and ro ck p opulation. In contrast, photographic and multisp ectral data prob e only the upp er few microns of the lunar surface, and are strongly mo dulated by shallow comp ositional differences (such as crater rays) and maturity (space weathering). We prop ose here to continue to collect Arecib o GBT bistatic, high-resolution 70-cm radar images of the lunar southern highlands, and to combine these data with Clementine infrared and Earth based thermal measurements to b etter understand the nature of ejecta from the Mo on's giant basins.

Name Bruce A Campbell

Institution Smithsonian Institution

E-mail campbellb@nasm.si.edu

Phone 202 633-2472

Student no

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing

X

No Maybe Yes

Instrument Setup
430 CH receiver 430 CH radar Atmospheric Observation Instruments:

Sp ecial Equipment or setup: We are submitting this request to the GBT for scheduling of the bistatic experiment.

RFI Considerations
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Frequency Ranges Planned
430 MHz This proposal requires coordination with AFTWF within the band 425-435 MHz.

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