Radar basic
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Transcript of 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?