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Stratum variance estimation for sample allocation in crop surveys. [great plains corridor
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Perry Jr., C. R. |
| Copyright Year | 1980 |
| Description | The problem of determining stratum variances needed in achieving an optimum sample allocation for crop surveys by remote sensing is investigated by considering an approach based on the concept of stratum variance as a function of the sampling unit size. A methodology using the existing and easily available information of historical crop statistics is developed for obtaining initial estimates of tratum variances. The procedure is applied to estimate stratum variances for wheat in the U.S. Great Plains and is evaluated based on the numerical results thus obtained. It is shown that the proposed technique is viable and performs satisfactorily, with the use of a conservative value for the field size and the crop statistics from the small political subdivision level, when the estimated stratum variances were compared to those obtained using the LANDSAT data. |
| File Size | 1276833 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810004006 |
| Archival Resource Key | ark:/13960/t0jt4gb76 |
| Language | English |
| Publisher Date | 1980-07-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Multispectral Band Scanners Image Processing Earth Resources Program Agristars Project Fitting North America Crop Inventories Stratification Data Sampling Great Plains Corridor North America Wheat Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
