Introduction 
G. GUYOT ( 
Introduction 
G. GUYOT ( 
THEME I : Trai 
Date 
Direct and ind 
Y.-J. KAUF1 
and D. TAN 
et Technique 
Compositing r 
M. LEROY 
Estimation or: 
Methods and 
B. BERTHE 
(LERTS, Urn 
Monitoring N( 
and inter cal 
F. CABOT, 
(LERTS, Urn 
In field charac 
of optical sai 
H. COSNEF 
M. LEROY 
P. LECOM1 
and R. SAN' 
Comparison o 
with the AT: 
C. FRANCC 
Estimation de 
dans les don 
X.-F. GU, G 
(INRA Bioc 
Multi-band au 
B.-N. HOLE 
T.F. ECK (7 
I. SLUTSKI 
D. TANRE 
J. -P. BUIS (