Original sentence: A second problem is the smaller non ambigous radial velocicy or Nyquist velocity.In the case of the TDWR, this means the velocity of  precipitations moving at a speed beyond 30 knots away or toward the radar will be analyzed wrongly.NERAD has a threshold that is twice as high (62 knots) and thus less terpretation.The resolution of small scale features, as mesocyclones, might be better in TDWR in reflectivity and velocity but could be noisier in velocity.There is different ways to correct that with mathematical algorithms but the unfolding is not always perfect
Edited sentence: A second problem is the smaller non–ambiguous radial velocity or Nyquist velocity.In the case of the TDWR, this means the velocity of precipitations moving at a speed beyond 30 knots away or toward the radar will be analyzed wrongly.NEXRAD has a threshold that is twice as high (62 knots) and thus less interpretation is needed.The resolution of small scale features, such as mesocyclones, might be better in TDWR in reflectivity and velocity but could be noisier in velocity.There are different ways to correct that with mathematical algorithms but the unfolding is not always perfect