WHAT IS RADAR ??
• RAdio Detection And Ranging
• An Object Detection System that transmits the
electromagnetic waves and analyzes the echoes
coming from the objects
• German inventor Christian Hülsmeyer built a simple
ship detection device intended to help avoid
collisions in fog which worked in a short distance
Basic Parts and Design of RADAR
• Radar Antenna
The power Pr returning to the receiving antenna is given by
DIFFERENT KIND OF RADARS.
APPLICATION OF RADAR IN DEFENCE FIELD
Air defense radars Ground Surveillance Radar
Missile Control Radar Navigational based Radars
Air Traffic Control Radar
ADVANTAGES OF MILITARY RADARS
• All-weather day and night capability.
• Multiple target handling and engagement capability.
• Short and fast reaction time between target detection and ready to fire
• Easy to operate and hence low manning requirements and stress
reduction under severe conditions
• Highly mobile system, to be used in all kind of terrain
• Flexible weapon integration, and unlimited number of single air defence
weapons can be provided with target data.
• Time - Radar can take up to 2 seconds to lock on
• Radar has wide beam spread (50 ft diameter over 200 ft range).
• Cannot track if deceleration is greater than one mph/second.
• Large targets close to radar can saturate receiver.
• Hand-held modulation can falsify readings.
Military radars are one of the most important
requirements during the wartime, which can be used for
early detection of ballistic missile and also for accurate
target detection and firing. Radar system discussed here
has a built in threat evaluation program which
automatically puts the target in a threat sequence, and
advises the weapon crew which target can be engaged