摘要
现阶段,一般采用多天线GPS接收机测量空间旋转目标。由于各天线安装位置不同,存在跟踪点不一致问题,影响了测量精度,有必要采取措施消除该系统误差。根据载体姿态信息,分析了旋转条件下天线安装位置与载体质心的位置速度关系,设计了旋转多天线条件下导航解算方法,将各天线观测值统一修正到载体质心,从而消除旋转条件下跟踪点不一致引入的系统误差。在载体姿态信息实时辅助下,该方法将天线安装位置不同引入的位置误差和速度误差分别减少至毫米量级和厘米量级,保证了高动态自旋载体测量精度。
At present,spatial rotary targets are usually measured by multi-antenna GPS receiver.Since installation positions of various antennas are different,the corresponding inconsistent tracking points may cause significant systematic errors which affect the measure accuracy and should be eliminated.Based on the multi-antenna carrier＇s attitude information,the paper analyzes the relations of position and velocity between installation positions of the antennas and the spinning carrier’s centroid,and designs a navigation algorithm for the spinning carrier with multi-antenna.The algorithm transforms the GPS observations of each antenna into the observations at the carrier’s cross-section center to eliminate the systematic errors due to the inconsistency of tracking points.With the real-time assistance of carrier’s attitude information,the position and velocity errors could be reduced to millimeter and centimeter level respectively,and the measurement precision of high-dynamic spinning carrier is ensured.
出处
《中国惯性技术学报》
EI
CSCD
北大核心
2010年第4期466-470,475,共6页
Journal of Chinese Inertial Technology
关键词
GPS
旋转载体
多天线
导航解算
GPS
rotating carrier
multi-antenna
navigation solution
