What does TEARR stand for in radar tracking terminology?

What does TEARR stand for in radar tracking terminology?

• A. Time, Elevation, Angle, Range, Range Rate
• B. Time, Elevation, Azimuth, Range, Rate
• C. Time, Elevation, Azimuth, Range, Phase
• D. Time, Elevation, Azimuth, Range, Range Rate

Answer: (D)

TEARR stands for Time, Elevation, Azimuth, Range, Range Rate. This five-tuple is used in radar tracking to express the target state: the time stamp, the vertical angle (elevation), the horizontal angle (azimuth), the distance to the target (range), and how fast that distance is changing along the line of sight (range rate). The correct interpretation uses azimuth rather than a generic angle and includes range rate rather than just rate or phase, because tracking relies on both the angular coordinates and the radial velocity to predict motion. The other options mix in generic terms or omit the radial velocity: using a non-specific angle, or replacing range rate with simply rate or phase, would not capture the full state needed for accurate tracking.

TEARR stands for Time, Elevation, Azimuth, Range, Range Rate. This five-tuple is used in radar tracking to express the target state: the time stamp, the vertical angle (elevation), the horizontal angle (azimuth), the distance to the target (range), and how fast that distance is changing along the line of sight (range rate). The correct interpretation uses azimuth rather than a generic angle and includes range rate rather than just rate or phase, because tracking relies on both the angular coordinates and the radial velocity to predict motion. The other options mix in generic terms or omit the radial velocity: using a non-specific angle, or replacing range rate with simply rate or phase, would not capture the full state needed for accurate tracking.