Advantages of MTI Radar | disadvantages of MTI Radar

This page covers advantages and disadvantages of MTI Radar. It mentions MTI Radar advantages or benefits and MTI Radar disadvantages or drawbacks. It also describes MTI radar basics.

What is MTI Radar?

MTI radar stands for Moving Target Indication Radar. It is one type of pulsed radar. It is characterized by very low PRF (Pulse Repetition Frequency). Hence there is no range ambiguity in the MTI radar. It is used to determine target velocity and to distinguish moving target from stationary target.

The unambiguous range (Run) is expressed by following equation.
Run = Vo/fp
Vo = velocity of EM in free space
fp = PRF

MTI Radar Block Diagram

The radar uses doppler effect in its functional operation. It eliminates clutter due to stationary objects amd identifies moving targets.

The figure-1 depicts block diagram of MTI radar which is self explanatory. Here STALO refers to Stable Local Oscillator while COHO refers to Coherent Oscillator. Refer RADAR tutorial >>.

Benefits or advantages of MTI Radar

Following are the benefits or advantages of MTI Radar:
➨MTI radar can distinguish between moving target and stationary target.
➨It uses low PRF (Pulse Repetition Frequency) to avoid range ambiguities.
➨MTI principle is used in air surveillance radar which operates in presence of clutter.
➨It is simpler compare to pulse doppler radar.
➨Antenna bandwidth is high.
➨It is economical.
➨It does not require waveforms with multiple PRF.
➨It is preferred at UHF frequencies.

Drawbacks or disadvantages of MTI Radar

Following are the disadvantages of MTI Radar:
➨Blind speed does not get detected by pulse MTI radar. Blind speed is defined as magnitude of radial component of velocity of target when moving target appears as stationary target.
➨They can have doppler ambiguities.


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