radar basic

RADAR BASICRADAR BASIC

Prepared by:Prepared by:

Shahid AliShahid Ali

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HISTORY OF RADAR

INTRODUCTION

FUNCTIONS

BASIC GROUPS

CLASSIFICATION

SCHEME OF PRESENTATIONSCHEME OF PRESENTATION

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ADVANTAGES

DISADVANTAGES

SUMMARY

SCHEME OF PRESENTATIONSCHEME OF PRESENTATION

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HISTORYHISTORY

Reflection of radio waves were made in the

1920s by MAXVEL and other scientists

He forecast that reflections could be obtained from targets

First radar named R.D.F (radio direction finding)

First radar installed on HMS RODENY and HMS SHEFIELD in 1939

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INTRODUCIONINTRODUCION

Radar is an electronic system that uses reflected Radar is an electronic system that uses reflected electro magnetic energy to detect the presence electro magnetic energy to detect the presence and position of objects invisible to the eyeand position of objects invisible to the eye

It stands for:It stands for: RAdioRAdio DirectionDirection And And RangingRanging

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FUNCTIONSFUNCTIONS

Search

Height finding

Missile Guidance

Navigation

Mapping

Traffic control

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BASIC GROUPSBASIC GROUPS

Primary

Secondary

Continues wave TX

RX

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PRIMARY RADARPRIMARY RADAR

Primary Radars are those Radars which have different Transmitter and Receiver unit

Requirement of Primary radar is to measure the range/ bearing of contact

Measuring the time taken of radio wave

Use single antenna

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SECONDARY RADARSECONDARY RADAR

Radar in which the Transmitting and Receiving station is same

Interrogator transmits an encoded signal to a target

Aircraft transmissions can trigger responses from fixed transmitters

Aircraft’s position may

be accurately established

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CLASSIFICATION

Radar system are divided into types, based on the

designed use

Search radar

Specific characteristics

IFF

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Search radar continuously scans a volume of space and provides initial detection of all targets within that space

Search radar further divided into specific types: Surface search Air search Height finding Tracking Missile guidance

SEARCH RADARSEARCH RADAR

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Surface search radar has two primary function

Detection and determination of accurate ranges and bearing

Maintain of a 360 degree search pattern

SURFACE SEARCH RADAR

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Air search radar systems initially detect and determine the Position Course Speed of air target

Used as early warning

AIR SEARCH RADAR

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HEIGHT FINDING RADAR

Obtaining range, bearing and altitude data

Detecting low flying aircraft

Tracking aircraft over land

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MISSILE GUIDANCE RADAR

Radar system that provides information used to guide a missile to a hostile target

Beam rider missiles follow a beam of radar energy

Homing missiles detect and home in on radar energy reflected from the target

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ADVANTAGES

Detects objects beyond the sighting range, in dark and in bad weather

Provide accurate Range, Bearing, Course, Speed and Altitude information

Effective use for Navigation purpose

Can identify between friend and foe

Control the traffic in harbour, on the road and in the Airport

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DISADVANTAGES

Disclose own position

Jamming/ interference is possible

EM waves is danger for human body

Very sensitive and costly equipments

May confuse friendly EW sensors with enemy

Not easily avaliable in international market

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ANY QUERY ??? ANY QUERY ??? PLEASE !!!PLEASE !!!

RECAPITULATIO

RECAPITULATIONN

RECAPITULATIO

RECAPITULATIO

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ASSIGNMENASSIGNMENTT

Visit the Quid-e-Azam Air port &

observe the Radar physically?