289 
geome- 
nces 
ique en 
e d’en- 
ues con- 
es enre- 
/bruit. 
- possibilities of obtaining ERTS recordings in RBV and MSS 
systems, the input data being: TV images, Quick-Look, RBV and MSS under 
photographical aspect on separate bands or colour-composite images 
initially (bulk) processed or of precision; possible CCTs (computer 
compatible tapes); 
- possibilities of obtaining some Nimbus, EREP program 
recordings; 
deltai- 
s- 
ten 
- the existence of the possibility that in the areas covered 
by space recordings should be done personal airborne and terrestrial re 
cordings and determinations, at the same time or not, with the space ones; 
they have the same wave length or not with the space ones; possibly the 
airborne personal recordings may be done only under the form of sampling for 
some wave lengths. 
liehe 
für das 
ten, ist 
h und 
tativ und 
In order to obtain an informational flow adequate for use and 
revaluation of the existing recordings as well as for the design of some 
optimum remote sensing systems, it is necessary to do calibration-sampling, 
i.e. the operational homogenization of these recordings under two aspects: 
geometrical and spectroradiometrical of the multivariate recordings. Thus, 
it is not only a calibration but a fitting of the data, processes, beginning 
with that of design, approach, data collection, preprocessing, initial-bulk 
and precision processing, automatic processing and man-computer interaction; 
this should be a chain in the true sense of the word without weak links. 
Problems 
Gen- 
iedener 
schäften 
e 
und auch 
Mainly it comes to the calibration of some existing available 
data to reconcile them with the new recordings designed and realizable for 
some concrete aims to complete the photo-interpretation-remote sensing 
system. 
doppelten 
igniten 
mit der 
ngen 
It may be seen from the very beginning that the basic data, 
object of the calibration-sampling-homogenization, are sufficiently diverse 
and difficult to be fitted. Even within one and the same recording system, 
for example the photographic one, this process is sufficiently delicate as 
the factors and conditions are very different. From this point of view, 
special problems are raised by the multispectral scanning and television 
system. The great majority of the last effort was directed to the MSS 
system, the photographic one being considered its particular case. 
.us dem 
There is a vast literature dealing with this interesting and 
delicate problem, its approach in this stage being very different: 
problem 
ping 
>m- 
0 
- the problem is treated first of all from a geometrical point 
of view taking into account the classical methods, perhaps adapted /1-3/; 
- it starts from discrete values and quantitative-metrical, to 
which the general relations of transformations by means of matrices are 
applied /4-6/; 
- by the preprocessing techniques /7-10/ of the data a preparing