HOMING GUIDANCE SYSTEM FOR MISSILES

MISSILE vs GUIDED BOMB

• The missiles can be guided along their path to lead towards the target and its path is agile

• Whereas in a guided bomb is dogmatic and jus follows a particular trajectory to hit the target

GUIDANCE SYSTEM

• The guidance system differentiates the missile from a guided bomb. It acts as the brain of the missile.

-The brain of the missile

COMPONENTS OF GUIDANCE SYSTEM

TYPES OF GUIDANCE SYSTEMS EMPLOYED IN GUIDING MISSILES

• WIRE GUIDED MISSILES• INERTIAL GUIDED MISSILES• TERRESTRIAL COMPARISION GUIDED MISSILES• COMMAND GUIDED MISSILES• CELESTIAL GUIDED MISSILES• BEAM RIDER • SEMI-ACTIVE LASER• HOMING GUIDANCE

FUNCTIONS OF GUIDANCE SYSTEMS

• TARGET SEEKER

• POSITIONAL INFORMATION

• SPEED INFORMATION

• DISTANCE INFORMATION

PHASES OF GUIDANCE

• BOOST PHASE• MID-COURSE PHASE• TERMINAL PHASE

HOMING GUIDANCE SYSTEM

• Its the most efficient and accurate type of guidance system as of now.

• In this kind of technology the missiles points itself towards the target by itself.

• Its also called “TWO –POINT GUIDANCE SYSTEM”

• Its regarded as the fire-and-forget technology

TYPES OF HOMING GUIDANCE

• ACTIVE HOMING GUIDANCE• SEMI-ACTIVE HOMING GUIDANCE• PASSIVE HOMING GUIDANCE• RETRANSMISSION HOMING GUIDANCE

ACTIVE HOMING GUIDANCE

• Both the receiver and transmitter are equipped in the missile

ADVANTAGES• Highly costly and sophisticated technology• Regarded as fire-and-forget technology

LIMITATIONS

• Has countermeasures• Very much prone to errors due to very ……..

Circuitry in the missile• Limited to short range targets

Used in????

SEMI-ACTIVE HOMING GUIDANCE• External transmitter is used and the receiver is in the missile• Uses highly directional antenna.ADVANTAGES• Used for very long range targets• Used in SPARROW –III and PHOENIX

LIMITATIONS