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Thesis - Leigh Moody.pdf - Bad Request - Cranfield University

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Chapter 9 / Performance<br />

_ _<br />

9.3 PN Performance<br />

The simulation cases when referring to PN and CLOS performance against<br />

targets 3 (crossing) and 7 (weave) are listed in Being clear in context, the<br />

use of the identifier (SO), and the observer kinematic type have been<br />

dropped. At this stage sensor error states are not included in the filter – this<br />

being an alternative to calibrating the IMU whilst the missile is in the<br />

launcher. On-line bias, misalignment and scale factor is made possible due<br />

to measurement duality and shaped trajectories. The ideal is a combination<br />

of both, characterising the IMU biases before launch which are then fixed,<br />

and estimating the IMU scale factors and other sensor errors in-flight.<br />

Table 5-1 at the end of §9.4. The 1 st column in this table identifies the<br />

simulation case referred to in the text. The 2 nd column is the data file name<br />

for configuration purposes.<br />

Z [km]<br />

5<br />

4<br />

3<br />

2<br />

1<br />

0<br />

8<br />

6<br />

4<br />

Y [km]<br />

2<br />

9-7<br />

0<br />

-2<br />

0<br />

2<br />

X [km]<br />

Parameters 2,3,4<br />

Parameters 5,6,7<br />

Figure 9-3 : Missile ATPN Track ( Target Trajectory 3 )<br />

4<br />

6

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