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

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Chapter 5 / Missile State Observer<br />

_ _<br />

Relative bearing:<br />

∂ Ψ<br />

∂ P<br />

ϕ<br />

1<br />

S<br />

B<br />

A<br />

t<br />

: =<br />

⎛<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎝<br />

: =<br />

1 − T<br />

T<br />

T<br />

S<br />

A<br />

S<br />

A<br />

∂ Ψ<br />

ϕ ⋅ sec<br />

1<br />

S<br />

A<br />

P<br />

Relative elevation:<br />

m,<br />

t<br />

2<br />

o,<br />

t<br />

S<br />

B<br />

Θ<br />

S<br />

B<br />

∂ X : = ∂<br />

TL<br />

⎛<br />

⎜<br />

⎜<br />

⎜<br />

⋅<br />

⎜<br />

sin<br />

⎜<br />

⎜<br />

⎝<br />

2<br />

5-18<br />

Ψ<br />

S A T<br />

( ∂ Ψ P , 0 )<br />

S<br />

B<br />

⋅<br />

⎛<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎝<br />

B<br />

T<br />

T<br />

T<br />

B<br />

A<br />

B<br />

A<br />

B<br />

A<br />

( 1 )<br />

( 4 )<br />

( 7 )<br />

t<br />

⎞<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎠<br />

− cos<br />

6<br />

2<br />

Ψ<br />

Equation 5.8-28<br />

S<br />

B<br />

⋅<br />

⎛<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎜<br />

⎝<br />

T<br />

T<br />

T<br />

B<br />

A<br />

B<br />

A<br />

B<br />

A<br />

( 2 )<br />

( 5 )<br />

⎞<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎠<br />

⎞<br />

( ) ⎟ ⎟⎟⎟⎟⎟⎟<br />

8<br />

⎠<br />

Equation 5.8-29<br />

S<br />

S S<br />

S S<br />

( 1 ) ⋅ T ( 1 ) , T ( 1 ) ⋅ T ( 2 ) , T ( 1 ) ⋅ T ( 3 )<br />

S<br />

S S<br />

S S<br />

( 1 ) ⋅ T ( 2 ) , 1 − T ( 2 ) ⋅ T ( 2 ) , T ( 2 ) ⋅ T ( 3 )<br />

A<br />

( ) ( ) ( ) ( ) ( ) ( ) ⎟⎟⎟⎟⎟⎟<br />

S<br />

S S<br />

S S<br />

1 ⋅ T 3 , T 2 ⋅ T 3 , 1 − T 3 ⋅ T 3<br />

S<br />

B<br />

A<br />

∂ Ψ<br />

S<br />

B<br />

A<br />

S<br />

B<br />

TL<br />

A<br />

A<br />

∂ X : = ∂<br />

A<br />

t<br />

P ⋅ cosΘ<br />

⋅ ∂ Ψ ∂ P : = ϕ ⋅<br />

1<br />

A<br />

A<br />

A<br />

A<br />

S A T<br />

( ∂ Ψ P , 0 )<br />

B<br />

t<br />

6<br />

A<br />

A<br />

A<br />

A<br />

A<br />

A<br />

⎞<br />

⎠<br />

Equation 5.8-30<br />

Equation 5.8-31<br />

( ( ) ( ) ( ) ) T<br />

B<br />

B<br />

B<br />

T 3 , T 6 , T 9<br />

A<br />

A<br />

A<br />

Equation 5.8-32<br />

Apportioning the range, range-rate, bearing and elevation innovations to the<br />

missile linear states,<br />

H ≡ ∂ Z ∂ X : = − ∂ Z ∂ X<br />

ML<br />

SK<br />

ML<br />

SK<br />

TL<br />

Equation 5.8-33<br />

Apportioning the target range, range-rate, bearing and elevation innovations<br />

to the missile angular states,<br />

MA<br />

SK<br />

MA<br />

( ) T<br />

S<br />

S<br />

0 , ∂ Ψ ∂ X , ∂Θ<br />

X<br />

H ≡ ∂ Z ∂ X : =<br />

∂<br />

10x2<br />

B<br />

ML<br />

B<br />

ML<br />

Equation 5.8-34

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