NDLI: Measurement of soil moisture trends with airborne scatterometers

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Measurement of soil moisture trends with airborne scatterometers

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1978
Description	The author had identified the following significant results. Repeated looks at surfaces that maintain constant roughness can provide an estimate of soil moisture in the surface, when appropriate radar look angles are used. Significant influence due to differences in soil moisture can be detected in the 13.3 GHz and 1.6 GHz scatterometer returns. Effects of normal crop densities have little influence on the surface soil moisture estimate, when appropriate look angles are used. It appears that different look angles are optimum for different frequencies to avoid effects from vegetation. Considering the frequency and look angles used on the Seasat-A imaging radar, differences in soil moisture should produce as much as 9 db difference in return on that system.
File Size	4421040
Page Count	111
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780021589
Archival Resource Key	ark:/13960/t2q57db0p
Language	English
Publisher Date	1978-06-01
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Scatterometers Earth Resources Program Soil Moisture Time Series Analysis Vegetation Data Processing Surface Roughness Farm Crops Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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