NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Software for the grouped optimal aggregation techniqueThe grouped optimal aggregation technique produces minimum variance, unbiased estimates of acreage and production for countries, zones (states), or any designated collection of acreage strata. It uses yield predictions, historical acreage information, and direct acreage estimate from satellite data. The acreage strata are grouped in such a way that the ratio model over historical acreage provides a smaller variance than if the model were applied to each individual stratum. An optimal weighting matrix based on historical acreages, provides the link between incomplete direct acreage estimates and the total, current acreage estimate.
Document ID
19820024943
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Brown, P. M. (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)
Shaw, G. W. (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)
Date Acquired
September 4, 2013
Publication Date
February 1, 1982
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
JSC-18244
E82-10397
NAS 1.26:167641
NASA-CR-167641
IT-L2-04304
LEMSCO-17755
Accession Number
82N32819
Funding Number(s)
PROJECT: PROJ. AGRISTARS
CONTRACT_GRANT: NAS9-15800
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available