Study on Methods for High-Accuracy Velocity Measurement Using GPS
Han Xianping · Electronics Optics & Control · 2009
Four methods for calculating GPS receiver's velocity are introduced,and the features and application scopes of each method are presented.By using a group of GPS measurement data,the velocity measurement results of the four methods were calculated out.The result showed that the central-smoothing differential method can overcome the shortcomings of the common differential smoothing method,which is slow in calculation and the calculated velocity may have a great error when some of the raw GPS data are bad.While using the central smoothing differential algorithm,the measured velocity of carrier is high in accuracy,which can satisfy the velocity-measurement precision requirement in many areas.