International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
A NIR-RED bs 
NDVI ——— (1) 
NIR+RED 
0.4 - 
Here NIR and Red - the subject reflectance values at mean 8 
wavelength quantities of near infrared and red spectrum range, 3 
maty i.e. 805 and 665 nm, correspondingly. T € 
> A coefficient 0 has been introduced by us, it is equal to follow 7 
ratio: 02 
tan- 
LO erc 
'sat.kz = LI (2) 001 ER, 
Rr 400 500 600 700 800 900 1000 1100 
wavelength, nm 
where I,(A760) and L(455;) - subject reflectance quantities for 16 
wavelength 760 and 551nm, correspondingly. 144 b 
1.24 
y ground 1 
data have 8 
3 su 
" 0.64 
(d in wave 8 1 
liometer of 8 04- 
Analytical © 7 
essing 512 927 
n over the ae 
400 500 600 700 800 900 4000 4100 
on canopy wavelength, nm 
th help of a 
id standard © 40 500 600 700 800 900 1000 1100 Figure 2. Solar radiation reflectance spectra from contiguous 
a standard wavelength, nm plants from the sites of wild hemp vegetation of Shu valley 
1x1 m. (solid curve- ground spectroscopy, dots- satellite date IKONOS) 
ote sensing 0.8 a) 1 - cynodon daktylon (died), 2 - artemicia scoparia, 
stem. This 3-onoporden acanthum (died); b) takyr. 
interval of 
ılti-spectral 
2 (Green)- Object 0 NVDI 
Rh MS 5 Cannabis 6,5 0,91 
9 Glyzyrniza uralensis 4,1 0,80 
© Artemicia sckoparia 3,9 0,73 
Artemicia leycodes 2,2 0,44 
Artemicia terrae albae 2,6 0,58 
Zynodon daktylon 3,7 0,69 
ion spectra Artemicia scoparia (died) 1,9 0,30 
and takyr EL Onoporden acanthum (died) 2,3 0,36 
by ground 400 500 600 700 80 900 1000 1100 Cannabis (died) 1,8 0,14 
'es that all wavelength, nm Cynodon daktylon (died) 2,1 0,33 
vegetation, ; Takyr 1,1 0,04 
And so for Figure 1. Solar radiation reflectance spectra from different 
t kinds by objects, gained by gr ound spectroscopy method (solid curve) Table 1. Values of coefficient 0 and NVDI index for hemp, 
analysis of and satellite date IKONOS (dots): contiguous plants and soils. 
a) | — glycyrrhiza uralensis, 2 — cannabis, 3 — Artemisia 
air spectra : ie 
scoparia; b) | - artemicia terrae albae, 2 — cynodon dactylon. 
It should be noted that both the coefficient 6 and the index 
As a result NDVI have absolutely definite quantities for each of plants 
enim Table above considered. Hence, hemp and contiguous plants can be 
vegetation recognized by their spectral characteristics. 
115