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The effectiveness 
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derable 
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Thus the 
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statoscope- and APR-data. 
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ry camera orientation data in the 
as. been known for a long time. 
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to make t ruse of such data. Recently consi- 
practical progress as been achieved. In several cases 
blocks and testblocks have been joint ly adjusted with 
or APR-data (partly with additional tilt control 
ines of lakes). The results not only confirmed the 
such auxiliary data but Showed height accura- 
exceeded expectations significantly. The (inex 
statoscope data alone are d P CARE. to obtain the 
cies required for medium and small scal à | ng, 
height control inside arbitrarily large 
endence on ground control I been FOUR 
re than with perimeter control f . 
medium scale mapping can now fully 
of large blocks with minimum control, 
atf nuwe6dt4 Y + 
effect .0 imetric accu 
n+*arna a T y 
interest, at present, owing 
capability of standard b 
rors, accuracy, 
    
few yes almost no further theoretical a- 
een published concerning the accuracy of strips and 
results which were available by the last congress 
lemented and expanded to the theor etical limits 
large blocks. Evidently the availe ble theoretical 
considered a sufficient basis for planning practi- 
angulation projects and estimating the resulting 
igations has 
ally on the 
st shifted 
$ | 
er8Q- 
| 
to empiri- 
basic error analysis 
New results have been 
à tfields, for photographs 
ta inces, concerning in particular syste- 
elation of errors. 
models. 
tes 
LTD 
Iso many experimental tests have been 
assessment of the accuracy of adjusted 
empirical tests of OEEPE are to be men- 
In general terms the high accuracy level 
n has been consistently confirmed, which 
nportant result for the practitioner. The 
C 
also made clearly evident the existence and 
om errors, in the order of up to 10 um in 
oh. erefore the actual results of block adjust- 
sufficiently agree with theoretical expectation 
ed on the assumption of uncorrelated random errors