INS辅助的动态北斗双频周跳探测与修复方法  

Dynamic BDS Double-Frequency Cycle-Slip Detection and Repair Method Aided By INS

作　　者：郭泽辉 庞春雷[1] 张闯[1] 张良 Guo Zehui;Pang Chunlei;Zhang Chuang;Zhang Liang(Information and Navigation College,Air Force Engineering University,Xi5 an 710077 China)

机构地区：[1]空军工程大学信息与导航学院,西安710077

出　　处：《航天控制》2021年第3期43-48,55,共7页Aerospace Control

基　　金：国家自然科学基金资助项目(41904014);国家自然科学基金资助项目(61601506)。

摘　　要：针对动态环境下载波相位测量受接收机运动状态影响,周跳不易探测的问题,提出INS辅助的动态北斗双频周跳探测与修复方法。该方法在宽巷组合的基础上,对原始载波相位观测值作差分处理,利用误差不随时间累积的姿态信息和加速度信息,推导载波相位与接收机运动状态之间的观测方程,构建INS辅助的宽巷组合检验量,并结合电离层残差法消除周跳探测盲点,实现优势互补。仿真结果表明,该方法可以抑制周跳检验量中因载体运动导致的载波相位跳变,能够有效探测出双频点发生的等周周跳、特殊周跳,对单一频点发生的小周跳、连续周跳也具有良好的探测性能,并能够正确解算出多种类型的周跳值。Aiming at the problem that carrier phase is affected by the motion state of receiver in dynamic environment and cycle slip is not easy to be detected,an INS assisted dynamic BDS double-frequency cycle slip detection and repair method is proposed. On the basis of the wide lane combination,the differential treatment of original carrier phase observations is performed to eliminate redundant parameters,and using the attitude information and acceleration information which error does not accumulate over time,and the observation equation is derived between carrier phase and receiver motion state,and the acceleration of auxiliary lane wide combination test quantity is established,and the ionosphere detection blind spots can be eliminated by combining residual method to realize the complementary advantages. The simulation results show that the proposed method can suppress the coarse error of carrier phase caused by carrier movement,can effectively detect the iso-cycle slip and special cycle slip occurring at dual frequency points,has good detection performance for the small cycle slip and continuous cycle slip occurring at a single frequency point,and can correctly solve various types of cycle slip.

关 键 词：INS辅助 双频 载波相位差分 周跳探测 周跳修复 

分 类 号：P228[天文地球—大地测量学与测量工程]