The fundamental principle of W band narrow pulse-near distance radar is introduced.The function and distance of the radar are presented.The parameters including acceptance

segregation and the modulated cycle are analyzed.The leak in radio frequency

intermediate frequency and the transmission distortion of the nanosecond grade pulse are discussed.The overcoming method of that is given.Based on analysis

a W band narrow pulse solid radar are designed.FPGA measure distance system is adopted in this radar first.This method of distance measurement not only is convenient in debugging

but also can achieve high precision.Finally

the test result of this radar is given.