CAJ | 학술논문

卫星导航系统存在许多类型的故障模型，其中最难检测的是慢变斜坡故障（SGE）。针对卫星导彬捷联惯导（GNSS／SINS）组合导航系统中存在的慢变斜坡故障，本文给出了一种新的算法——速率检测算法。该算法是基于对传统检测量增长速率的检测，通过在自主完好性外推法（AIME）的基础上增加一个卡尔曼滤波器，检测滤波器观测量速率变化来实现故障检测。仿真实验表明，本文的速率检测算法比AIME算法具有更好的检测效果，幅值越小的斜坡故障节省的时间越多。
위성도항계통존재허다류형적고장모형，기중최난검측적시만변사파고장（SGE）。침대위성도빈첩련관도（GNSS／SINS）조합도항계통중존재적만변사파고장，본문급출료일충신적산법——속솔검측산법。해산법시기우대전통검측량증장속솔적검측，통과재자주완호성외추법（AIME）적기출상증가일개잡이만려파기，검측려파기관측량속솔변화래실현고장검측。방진실험표명，본문적속솔검측산법비AIME산법구유경호적검측효과，폭치월소적사파고장절성적시간월다。
There are many types of failure modes in satellite navigation system, and the worst case failure mode with regard to its detection by an integrity algorithm is the slowly growing （ramp type） errors （SGE）. Aiming at the slowly growing （ ramp type） errors in the integrated GNSS/SINS system, this paper presents a new integrity monitoring method, rate detector algorithm. The concept of the new algorithm is based on the detection of the rate of the conventional test statistic. Rate detector was realized by a simple Kalman filter whose state variables were based on AIME algorithm and the fault can be detected by detec- tion of the rate of test statistic. Simulation results show that this new algorithm can get better performance than AIME algorithm in integrity monitoring. The smaller the amplitude of the slope failure the more time will be saved.