AIDJEX Bulletin #40 - Polar Science Center - University of Washington

102 .Q
CRRIBOU TO SNOW BIRD
-
E
Y
Y
W
g 100.0
!
..
*-!e--?-
90 a 0
6 8 10 12 14 16 18 20 22 24
FEBRUARY I976
Fig. 7. Distance between station 1 (Caribou) and station 3 (Snow Bird)
from raw translocation fixes during period used to evaluate positioning
accuracy.
of the latitudes and longitudes.
A translocation fix is defined as the vector
difference of two fixes, one for each of two receivers. The translocation
reference is the vector difference between the reference positions for each
receiver antenna.
A translocation radial error is the vector from the trans-
location reference to the translocation fix.
Our convention is to measure
position accuracy as the 68th percent point of the lengths of the radial
error vectors.
Thus, an accuracy of 100 m for an ensemble of 500 fixes implies
that exactly 340 fixes fall within a circle centered at the ensemble median
position and or radius 100 m.
Stand-A1 one Accuracy
The stand-alone accuracy for the two ensembles of fixes is given in
Table 1 and shown for camp 3 in Figure 8.3. These data are characterized as
single-channel (no refraction correction), real-time, time-recovery-corrected
data edited to conform with
the critical interval described earlier.
92