Technology and Methodology |
|
|
|
|
|
RESEARCHES ON REMOTE SENSING AREA MEASUREMENT BASED ON DIFFERENT SAMPLING METHODS |
HU Tan-gao, ZHANG Jin-shui, PAN Yao-zhong, SONG Guo-bao, DONG yan-sheng,JIA Bin |
State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875,China |
|
|
Abstract It is held that the combination of remote sensing and sampling technology can be effectively used in
area measurement. At present, the methods of random sampling, systematic sampling and stratified sampling are
widely used in remote sensing sampling. Based on remote sensing images, this paper has discussed from different
angles the random sampling, systematic sampling, and stratified sampling that includes equal-count, equal-area and
equal-dist. It is found that: (1) for the same features, from three indicators (the average error percentage,
standard deviation and difference), the precision of stratified sampling is better than that of random sampling
and systematic sampling, (2) for different features, the use of three stratified sampling method and the results
obtained are proportional to the percentage of features, i.e., the greater the percentage of features, the better
the results, and (3) from three indicators (the average error percentage, standard deviation and difference), the
three kinds of stratified sampling methods (equal-count, equal-area and equal-dist) have their respective own
merits, and the precision is also closely related to the percentage of features.
|
Keywords
Principle component analysis
Remote sensing information
Gold deposit
Xiaojiayingzi area
|
Issue Date: 06 July 2009
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|