What is MTI in radar and its purpose?

• A. Moving Target Indicator; filters stationary clutter to reveal moving targets for track initiation.
• B. Magnetic Target Indicator; identifies metal objects.
• C. Moving Temperature Indicator; detects heat signatures.
• D. Military Target Identifier; tags targets for logging.

Answer: (A)

MTI stands for Moving Target Indicator. Its purpose is to separate moving targets from stationary clutter in radar returns so you can reliably begin tracking them. In radar scenes, clutter from the ground, sea, buildings, and weather is mostly stationary, which can mask small or slow-moving objects. MTI uses Doppler differences to distinguish motion: stationary reflections have little to no Doppler shift, while moving targets produce a measurable shift. By processing successive radar scans and suppressing the non-moving components—often through subtraction or a Doppler high-pass filter—the moving targets stand out. This makes it possible to initiate and maintain tracks on those targets even in cluttered environments. It’s not about identifying metal objects, heat signatures, or tagging targets; it’s specifically about revealing moving objects by filtering out stationary clutter.