When a bird or an insect such as a cricket or grasshopper chirps, it makes short high-pitched sounds. The crickets chirped faster and louder. = chirrup Chirp is also a noun. The chirps of the small garden birds sounded distant. + chirping chirp·ing the chirping of birds. To make a short, high-pitched sound
An all-encompassing term for the various techniques of pulse expansion-pulse compression applied to pulse radar; a technique to expand narrow pulses to wide pulses for transmission, and compress wide received pulses to the original narrow pulse width and wave shape, to gain improvement in signal-to-noise ratio without degradation to range resolution and range discrimination
Typical phase coding or modulation applied to the range pulse of an imaging radar designed to achieve a large time-bandwidth product The resulting phase is quadratic in time, which has a linear derivative