大地测量与地球动力学2011，Vol.31Issue(1)：72-77,6.
Kalman滤波估计GPS载波相位变率的测速方法与实现
METHOD OF VELOCITY MEASUREMENT BY GPS CARRIER PHASE RATE ESTIMATED FROM KALMAN FILTER AND ITS IMPLEMENT
摘要
Abstract
The accuracy of moving carrier' s velocity, which was determined by GPS, depends on mainly accuracy of carrier phase-rate. It is difficult to guarantee accuracy of velocity with raw Doppler and differential phase.Carrier phase-rate estimated from Kalman filter was adopted to determine the velocity instead of Doppler. The model and theory of differential velocity measurement and carrier phase-rate estimated by Kalman filter were introduced.The flight data of a certain airborne gravimetry were calculated with Kalman filter method, and the results were compared with those from GT-1A and WAY-Point. It is indicated that GPS carrier phase-rate estimated from Kalman filter can be adapted to some high-velocity and more complicated movements, its accuracy of velocity measurement can achieve at mm/s level, the result approaches to that by GT-I A and is higher than that with WAY-Point.关键词
多普勒/载波相位变率/GPS/差分测速/Kalman滤波Key words
Doppler/ carrier phase-rate/ GPS/ differential velocity measurement/ Kalman filter分类
天文与地球科学引用本文复制引用
田良辉,刘根友,郭爱智..Kalman滤波估计GPS载波相位变率的测速方法与实现[J].大地测量与地球动力学,2011,31(1):72-77,6.基金项目
国家自然科学基金(40974013) （40974013）
国家863计划项目(2006AA06A202) （2006AA06A202）
