Characteristics of the nonintertia fast directionality

easily form multiple beams of phased array radar antenna make it have more function than the conventional radar.In this article

both CPS scanning pattern and IPS scanning pattern are analyzed.An interlaced beam multiplexing scanning method based on IPS mode is established

which is fit for the weather phenomena with larger spectral width.After the shortcomings of presented Doppler weather radar VCP11 mode are analyzed

its scanning methods are improved

accordingly

the ideal scanning mode is derived

that is

three beams scanning is used in pitch at the same time.This scanning mode can reduce remarkably scanning time than using single beam scanning.