What limitation does frequency-modulated continuous wave radar overcome?

Frequency-modulated continuous wave (FMCW) radar is particularly effective for distance determination due to its unique method of operation, which involves the continuous transmission of a frequency-modulated signal. This enables the radar system to measure the time delay between the transmitted signal and the received echo from an object, effectively determining the distance to that object.

The use of modulation allows FMCW radar to provide accurate distance measurements by analyzing the frequency difference between the transmitted and received signals. This frequency difference is directly related to the time it takes for the radar signal to travel to the target and back, thus overcoming limitations associated with other types of radar systems that may rely on pulse transmission.

In other radar systems, such as pulsed radar, determining distance can be more challenging as it requires precise timing of pulse transmission and reception. The continuous nature of FMCW signals significantly enhances the ability to measure distances accurately, making it especially useful in various applications ranging from automotive sensing to atmospheric studies.

The other options address different aspects of radar capabilities. Speed of sound measurement is not a specific limitation that FMCW radar addresses. Object tracking in clutter is a challenge for all radar systems, including FMCW, as it relates to distinguishing targets from background noise. Frequency resolution pertains to an aspect of radar