Which of the following is similar to pulse radar?

Pulsed wave radar is similar to pulse radar because it operates on the same fundamental principle of transmitting pulses of radio waves and measuring the time it takes for the emitted signals to bounce back from objects in the environment. This methodology allows for precise distance measurements, which is a core function of traditional pulse radar systems.

While options like continuous wave radar involve a continuous transmission of signals without discrete pulses, and frequency-modulated radar uses varying frequency signals to determine speed and distance, they do not follow the pulsed transmission and reception strategy that characterizes pulse radar systems. Modified pulse radar could indicate variations or enhancements to traditional pulse radar techniques, aligning it more closely with the workings of pulse radar itself.