Share Email Print
cover

Proceedings Paper

Multiwavelength dielectrometer (MWD) sensor for planetary subsurface exploration
Author(s): Manohar Deshpande; Michael Van Steenberg; Lawrence Hilliard
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A light weight, low power instrument called Multi Wavelength Dielectrometer (MWD) to measure subsurface properties of planetary surfaces is described. The MWD instrument consists of essential electronics and metallic plates acting as electrodes attached to the body of space crafts. An electric signal applied to one of the electrodes acting as a cathode sets up electric field pattern (in the soil medium) between the cathode and other electrodes acting as anodes. The electrodes are swept through multiple wavelengths (1Hz-MHz) and the electric current drawn by the electrodes or mutual capacitances between electrodes is measured at each frequency. The measured capacitances whose values depend upon electrode spacing, dielectric constant of the subsurface soil, and the frequency are then used to estimate electrical properties of the soil.

Paper Details

Date Published: 8 December 2006
PDF: 10 pages
Proc. SPIE 6410, Microwave Remote Sensing of the Atmosphere and Environment V, 641018 (8 December 2006); doi: 10.1117/12.693499
Show Author Affiliations
Manohar Deshpande, NASA Goddard Space Flight Ctr. (United States)
Michael Van Steenberg, NASA Goddard Space Flight Ctr. (United States)
Lawrence Hilliard, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 6410:
Microwave Remote Sensing of the Atmosphere and Environment V
Azita Valinia; Seiho Uratsuka; Tapan Misra, Editor(s)

© SPIE. Terms of Use
Back to Top