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SONAR vs RADAR | difference between SONAR and RADAR

This page compares SONAR vs RADAR and mentions difference between SONAR and RADAR. SONAR stands for SOund Navigation And Ranging and RADAR stands for RAdio Detection And Ranging.

Both the systems are used for detection of objects but at different places. Sonar does detection under water where as Radar does it above the land or sea. The principle of operations of both sonar and radar are same but uses different wave types.


Active SONAR vs Passive SONAR

Following are the features of SONAR.
• Sonar stands for Sound Navigation and Ranging.
• It uses sound waves in frequency range from 20KHz to 10 MHz for its operation.
• The sonar transmits waves at about 343 meters/second in the sea.
• The figure-1 depicts active sonar and passive sonar types.
• Sonar supports lesser range compare to radar. This is due to the fact that sound waves are affected by various layers of temperature/salinity/depth of sea.
• Sonar is unaffected by any countermeasures, but it can be affected because of attenuation of sound waves by marine life.

Following are the types of SONAR.
• Active Sonar
• Passive Sonar
• Hand-held Sonar
• Intercept Sonar


Radar Tutorial

Following are the features of common RADAR system.
• Radar stands for Radio Detection and Ranging.
• It uses electromagnetic waves (i.e. radio waves) in frequency range from 3 MHz to 300 GHz.
• The radar transmits waves at about 300 x 106 meters/second in the air.
• Radar supports greater range.
• Radar can be jammed and consecutively affected by electronic counter-measures (i.e. use of jamming EM waves), but it is unaffected by birds.

radar types

Following are the types of RADAR based on their principle of operation.
• Primary radar, Secondary radar
• CW radar, Pulse radar
• Monostatic Radar, Bistatic Radar
• Radar types based on applications of use e.g. weather radar, search radar, automotive radar, ground penetrating radar,


Refer following radar tutorial links which covers radar measurements, doppler radar, FMCW radar, radar bands, radar scope, weather radar, radar range and resolution, ground radar etc.
RADAR tutorial   Radar Measurements   Doppler Radar   FMCW RADAR   RADAR BANDs   RADAR SCOPE   Weather Radar   Ground Penetrating Radar System  RADAR RANGE and RESOLUTION 

Radar calculators

Following are useful radar calculators to calculate radar range, radar PRF, radar resolution etc.
Radar Range calculator   Radar PRF vs Range   Radar Range Resolution 

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