4 
Least-Squares Adjustment 
Case of Perpendicular Overlapping Lines 
SURVEY 
‚ense 'enougt 
tu data 
DATA PROCESSING. 
; 
| Sn. nnr wuflle analysis 
1 & 
Integraued approach to 
Ar nrh determmlnatlon 
_l analysis 
arrh averlaps 
BUNDESAMT FÜR 
SEESCHIFFFAHRT 
UND 
HYDROGRAPHIE 
vr 
At each crosschecks, 3 parameters are estimated... 
. Pı:: average relative sound speed error for the survey line 
P2: average relative sound speed error for the control line 
Ö12: vertical displacement between survey and control line 
I 
My 
"- 
Ma 
00m 
App 
Ir 
2,4 m/s, 
1,1 m/s 
0,08 m 
ı 9 = 
'y/£ 
=> MM 
0,04 m 
72.07 m 
\08 1 
v5 AA 
0.1 mis 
0,00 m 
2 
5 m 
9.03 ır 
+9 N: 
A, Tr 
0,03 r 
4.4 1: 
m 
100 
4/8 
m 
0.08 m 
0,05 m 
I 
BD 
0 200m Project 4D-SVP 
0 
1000 2000 m 
"5 
zU