Continuous wave radar signals are best for measuring:

Continuous wave radar signals are best for measuring:

• A. Range
• B. Velocity
• C. Azimuth
• D. Elevation

Answer: (B)

Continuous wave radar’s transmitting signal is constant, so it has no time reference to measure how long a signal takes to travel to a target and back. What you can extract cleanly from a CW system is the Doppler shift caused by a moving target. As the target moves toward or away, the reflected frequency shifts by an amount proportional to the radial speed along the line of sight. That Doppler frequency difference can be measured very precisely, giving the target’s velocity. Without modulation to gauge range, distance stays ambiguous, and angle information (azimuth or elevation) requires separate beam steering or array processing beyond what a pure CW setup provides. So the strongest, most direct measurement from continuous wave radar is velocity.

Continuous wave radar’s transmitting signal is constant, so it has no time reference to measure how long a signal takes to travel to a target and back. What you can extract cleanly from a CW system is the Doppler shift caused by a moving target. As the target moves toward or away, the reflected frequency shifts by an amount proportional to the radial speed along the line of sight. That Doppler frequency difference can be measured very precisely, giving the target’s velocity. Without modulation to gauge range, distance stays ambiguous, and angle information (azimuth or elevation) requires separate beam steering or array processing beyond what a pure CW setup provides. So the strongest, most direct measurement from continuous wave radar is velocity.