靳少飞, 杨震, 顾和和,等.基于历元星间双差模型的GNSS测速方法[J].河南理工大学学报（自然科学版）,2020,39(1):53-59.

JIN S F, YANG Z , GU H H, et al.GNSS speed measurement method based on double difference modelbetween epochs and satellites[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(1):53-59.

基于历元星间双差模型的GNSS测速方法

靳少飞1,2, 杨震1,2, 顾和和1,2, 徐永明1,2

1.中国矿业大学环境与测绘学院，江苏徐州 221116;2.中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室，江苏徐 州  221116

摘要:速度信息是描述物体运动状态的重要参数之一，利用GNSS技术可以迅速可靠地进行速度测量。本文利用GNSS载波相位观测值，提出历元星间双差的测速方法。该方法仅需利用单个GNSS接收机的载波相位观测值先后在历元和星间求差，以双差值为观测值，先求解载体在历元间移动的距离，根据历元间的时间间隔求解其速度。试验结果表明：该方法在静态并且观测环境较好的条件下，E，N，U方向上的测速精度优于RTK位置差分和多普勒测速方法；在动态且观测环境较差的条件下，E，N，U方向上的测速精度优于RTK位置差分测速方法，但较多普勒测速方法差。

关键词:GNSS测速;历元星间双差;位置差分测速;多普勒测速

doi:10.16186/j.cnki.1673-9787.2020.1.7

基金项目:国家自然科学基金资助项目(41674008 )

收稿日期:2019-05-12 00:00:00

修回日期:2019-07-03 00:00:00

出版日期:2020/01/15

GNSS speed measurement method based on double difference modelbetween epochs and satellites

JIN Shaofei1,2, YANG Zhen1,2, GU Hehe1,2, XU Yongming1,2

1.School of Environment Science and Spatial Informatics， China University of Mining and Technology ，Xuzhou  221116 ， Jiangsu， China;2.National Administration of Surveying Mapping and Geo-information Key Laboratory ofLand Environment and Disaster Monitoring， China University of Mining and Technology ，Xuzhou  221116 ， Jiangsu， China

Abstract:Speed information is one of the important parameters to describe the motion state of an object. With GNSS technology， speed measurement can be performed quickly and reliably. In this paper， the carrier phase observation value was used to propose a method of measuring the speed by double difference between epochs and satellites. The method only needed to use the carrier phase observation value of a GNSS receiver to successively calculate the difference between the epoch and the satellite， and took the double difference as the observation value， first solved the distance that the carrier moved between the epochs， and then solved the velocity according to the time interval between the epochs. Through experiments， the accuracy of the speed measurement in the E ， N ， and U directions under static and observing conditions were better than that of RTK position difference and Doppler speed measurement method. The accuracy of the speed measurement in the E ， N ， and U directions under dynamic and observing conditions were better than the RTK position difference method， but were worse than the Doppler method.

Key words:GNSS speed measurement;double difference between epochs and satellites;position difference speed;

基于历元星间双差模型的GNSS测速方法_靳少飞.pdf