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

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Appendix B / Frames of Reference<br />

_ _<br />

generally considered to be a point mass, the orientation of the wire frame<br />

target model is defined with respect to target body axes.<br />

T<br />

Y<br />

T<br />

Z<br />

A<br />

Z<br />

15.16 Target Velocity Frame<br />

O<br />

T<br />

X<br />

A<br />

Y<br />

15-9<br />

A<br />

X<br />

Y TB<br />

t<br />

Z TB<br />

Figure 15-6 : Target Frames of Reference<br />

The Target Velocity frame (TV) is located at point (t) and is rotated through<br />

YP angles with respect to the Target Body frame such that X TV points along<br />

the target velocity vector. When the target is flying straight and level the<br />

Target Velocity and Target Body frames are coincident with Y TV and Z TV<br />

point right and down respectively.<br />

15.17 Radar Boresight Axes<br />

Radar boresight axes (TD) shown in Figure 15-7 are located at point (o), the<br />

centre of the planar array spanned by Y TD and Z TD . X TD is a bi-normal<br />

vector pointing outwards from the array and Y TD remains in the plane<br />

spanned by X A and Y A .<br />

X TV<br />

X TB

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