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Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. [1] It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees.
AN/APS-136 I band MTI (Moving Targets Indication) radar for EH-60C; AN/APS-137 improved AN/APS-116 maritime surveillance radar Texas Instruments for P-3 Orion, HC-130 and S-3B; AN/APS-138 improved AN/APS-125 pulse-Doppler ultra high frequency surveillance radar by General Electric for E-2 Hawkeye
For ground-based radar, cluttered returns tend to be at DC, making them easily discriminated by Moving Target Indication (MTI). [3] Thus, a notch filter at the zero-Doppler bin can be used. [ 2 ] Airborne platforms with ownship motion experience relative ground clutter motion dependent on the angle, resulting in angle-Doppler coupling at the ...
Moving target indications (MTI), at first, might seem just an adjunct to imaging radar, allowing the operator to focus on the moving target. That which makes them peculiarly MASINT, however is, especially in combination with other sensors and reference material, allows the measurement of a movement signature.
The pulse-repetition frequency (PRF) is the number of pulses of a repeating signal in a specific time unit. The term is used within a number of technical disciplines, notably radar . In radar, a radio signal of a particular carrier frequency is turned on and off; the term "frequency" refers to the carrier, while the PRF refers to the number of ...
MTI may refer to: Government and military ... Moving target indication, a radar signal processing technique used to distinguish targets from clutter; Organizations
The simplest method is available when the apparent size of the target is relatively small with respect to clutter source. In this case the reduced pulse and beam width, which matches the expected target size, may produce good signal-to-noise ratio (target to clutter ratio). Additional discrimination capabilities rely on target imaging or ...
Pulse-Doppler typically uses medium pulse repetition frequency (PRF) from about 3 kHz to 30 kHz. The range between transmit pulses is 5 km to 50 km. Range and velocity cannot be measured directly using medium PRF, and ambiguity resolution is required to identify true range and speed.