s —— — ERE 
  
  
The simulation study investigates the theoretical 
accuracy behaviour of blocks by variation of the 
essential project parameters. In particular different 
accuracy levels of the navigation data, different cases 
of ground control and different block sizes are 
considered. In addition, it is distinguished whether 
observations for all six exterior camera orientation 
parameters or only for the Position parameters (X c? 
Yc Zpc) or the attitude parameters ( u,$,K ) re- 
spectively are utilized. In the following the concept of 
the simulations is described and the results are pre- 
sented and discussed. 
  
  
2. Mathematical model and parameters of the simulation 
study 
2.1 The mathematical model 
The introduction of observed camera orientation data in 
the bundle block adjustment does not create serious 
problems. The six observed orientation elements provide 
six additional observation equations which are connected 
with the photogrammetric block. data via the common 
unknown camera orientation parameters. In principle 
there are three groups of observation equations for 
three different sets of observations: 
xX, + V i - K, ; dk, + T, dt, 
Xi + Vein = I, *dk, 
E; + V = Ijdt, 
where: 
T ; 
"xS T (x, 5» 34.395 vector of observed image 
coordinates of point. i in image j 
T 
XA e E. pw» Yepiv Z.pi;-). Vector of 
object coordinates of the ground control 
points i* (i* is subgroup of points i) 
T a nav nav nav nav nav nav 
"ES (X 0 pr X Pc Z pcq : $ REX j? 
vector of observed exterior orientation elements of 
the image j 
- y ig» V el: Vols 1 vector of the least squares residuals 
- IQ I, identity matrices CL, - 3 =.3, I - 6 x 6) 
- Kr Ti» coefficient matrices of the bundle block 
adjustment observation equations 
- 270. = 
rea 
Tte mes