Fig.1

Geometric relation between missile and target in the longitudinal plane"

Fig.2

Block diagram of seeker servo control system"

Fig.3

Geometric relation between missile and target in the longitudinal plane under the influence of radome error"

Fig.4

Schematic diagram of influence of radome error characteristics"

Fig.5

Block diagram of guidance/control/missile multi-loop model"

Fig.6

Block diagram of guidance loop nonlinear model with parasitic loop"

Fig.7

Diagram of frequency domain equivalent system"

Fig.8

Flowchart of frequency domain equivalent system"

Fig.9

Small disturbance linearization flowchart of guidance/control/missile multi-loop model"

Fig.10

LTI simplified model of guidance loop with parasitic loop"

Fig.11

Comparison of bode diagram of seeker model and low-order equivalent model"

Fig.12

Step response comparison of seeker model and low-order equivalent model"

Fig.13

Comparison of response between nonlinear model and simplified model"

Fig.14

Root locus diagram of longitudinal system matrix when R1>0"

Fig.15

Root locus diagram of longitudinal system matrix when R1 < 0"

Fig.16

Root locus diagram of lateral system matrix when R2>0"

Fig.17

Root locus diagram of lateral system matrix when R2 < 0"

Fig.18

Comparison of longitudinal response between nonlinear model and simplified model in stable region"

Fig.19

Comparison of longitudinal response between nonlinear model and simplified model at stable boundary"

Fig.20

Comparison of longitudinal response between nonlinear model and simplified model outside stable region"

Fig.21

Comparison of lateral response between nonlinear model and simplified model in stable region"

Fig.22

Comparison of lateral response between nonlinear model and simplified model at stable boundary"

Fig.23

Comparison of lateral response between nonlinear model and simplified model outside stable region"