If the pulse repetition interval is 0.002s between transmit pulses, then the MTI process will produce the same signal as a stationary object, which renders the system blind to objects traveling at this radial velocity.
If the pulse repetition interval is 0.002s between transmit pulses, then the MTI process will produce 320 ^ o phase rotation. That is the same as a stationary object, which renders the system blind to objects traveling at this radial velocity.