| 摘要 |
<p>In accordance with an aspect of the present invention, a calibration method of a Doppler radar for measuring muzzle velocity comprises the steps of: a) measuring a radar beam frequency outputted from a Doppler radar for measuring the muzzle velocity by a frequency measurer to calculate an error value of the radar beam frequency; b) calculating an output display resolution value of the Doppler radar for measuring muzzle velocity; c) calculating a long term stability error value and a frequency calibration error value of the frequency measurer; d) calculating a long term stability error value and a frequency calibration error value of a Doppler frequency generator used in the calibration system of the Doppler radar for measuring muzzle velocity; e) measuring a calibration velocity value from the Doppler radar for measuring muzzle, which receives a calibration frequency from the calibration system of the Doppler radar for measuring muzzle velocity, to measure an average calibration velocity value and a standard uncertainty for the calibration velocity measurement value; and f) calculating a measurement uncertainty from the values calculated in items a) to e) above.</p> |
