摘要
针对目前单历元算法需要连续观测较长时间才能够得到较为精确的解算结果的问题,利用载具同时架设3台GNSS接收机,获得基线观测量,同时事先精确测定接收机之间的距离,并利用陀螺仪获得载具的姿态角,通过增加距离和姿态观测量,与基线观测量共同进行平差处理,可以得到单历元较为稳定而精确的坐标解算结果。试验表明,平面精度在10 mm以内,高程精度在3 cm以内,相较于不添加距离和姿态观测量的结果精度提高了15%以上。
According to the fact that it takes a lot of time to obtain high precision results by single epoch algorithm,three GNSS receivers are erected on a carrier. The distance between the receivers are measured in advance,and the attitude angles of the carrier are measured by a gyroscope. Thus,the distance and attitude constraints are added to the baseline adjustment. Then a relatively stable and accurate result is achieved. The experiment results show that the maximum deviations are less than 10 mm in the east and north directions,30 mm in the elevation direction. The accuracy of the result is improved by more than 15% compared to the result without distance and attitude constraints.
出处
《测绘通报》
CSCD
北大核心
2017年第1期39-42,共4页
Bulletin of Surveying and Mapping
关键词
GNSS
姿态约束
距离约束
平差处理
GNSS
attitude constraints
distance constraints
network adjustment
