h.2.1. 
DESCRIPTION OF METHODS FOR PLOTTING FROM A SINGLE STRIP OF SLAR-IMAGERY. 
  
. Introduction. 
Generally, plotting from a single strip of imagery provides only plani- 
metric coordinates as heights cannot be obtained. Thus, application 
of this approach should be limited to imagery from flat areas only. Only 
the use of an interferometer could extend the method in such a way, that 
all three model-coordinates are defined. 
Since the projection parameters are varying from one image-point to 
another systematically as well as stochastically, meaningful plotting 
can be done by 
- differential transformation of image into map coordinates 
by using the projection equations (1); these methods will be 
called "parametric"; 
- interpolation methods, in which image- and map coordinates are 
considered to be "inconsistent" in the sense of interpolation 
theory; these methods will be called "non-parametric", since 
they do not make use of the projection parameters; 
- various combinations of parametric and non-parametric methods. 
These methods can be applied in modes to be classified as: 
- numerical 
- photographical 
- graphical. 
Parametric Plotting. 
  
General. 
The parametric plotting consists of the use of the projection equations, 
such as (1). Resolution eonsiderations lead to the conelusion that the 
vector AX can be neglected. Instead of geocentric coordinates, model 
coordinates are computed, so that matrix D - I. There appear lh unknowns 
per 3 equations. So one unknown has to be assumed to be given. For the 
single strip of imagery-approach, this will be Zp> which is assumed to 
be zero. So the algorithm is to compute & from the equation for Zp and 
Y.) then from the two remaining projection equations. 
derive (X,, p