Amplitude error and phase error in channel

Error Analysis and Error correction

orbit error or star calendar error

5-item Brief Symptom Rating Scale

ability rating

able-bodied rating

absolute maximum rating

AC filter rating

acceptance of materials rating

accuracy rating

achievement rating

achievement rating scale

active part rating

activity rating

actual output rating

adaptability rating for military

adaptive behavior rating scale

adjective rating scale

adjusted rating life

aerodrome rating