The main limitation of continuous wave (CW) radar is its inability to measure the range of a target. The CW radar continuously emits a signal and measures the Doppler shift of the reflected signal to detect movement and determine speed. However, because it does not send discrete pulses, it cannot measure the delay between signal transmission and reception, which is necessary to calculate the distance to the target.
Radar technology has several limitations, including susceptibility to interference and jamming, limited resolution depending on radar wavelength and signal processing capabilities, and reduced performance in adverse weather conditions such as severe weather. rain or fog. Additionally, radar systems may have limited ability to differentiate between multiple closely spaced targets and may struggle with the clutter of non-target objects.
CW radar cannot measure range because it works by continuously emitting a signal and detecting the Doppler shift of the reflected waves. Without discrete pulses, CW radar does not have the time domain information needed to calculate the delay between signal transmission and reception, which is essential for determining the distance to the target.
Limitations of pulse Doppler radar include its complexity and the potential for false alarms or reduced accuracy in environments with significant clutter or interference. Pulse Doppler radar systems can also be limited by the need for precise synchronization between transmitted pulses and received echoes. Additionally, they may have difficulty detecting low-velocity targets due to the reliance on Doppler shift for velocity measurement, which may be less effective for slow-moving or stationary targets.