کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1717776 1520094 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A nonlinear quaternion-based fault-tolerant SINS/GNSS integrated navigation method for autonomous UAVs
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
پیش نمایش صفحه اول مقاله
A nonlinear quaternion-based fault-tolerant SINS/GNSS integrated navigation method for autonomous UAVs
چکیده انگلیسی

The fault-tolerant integrated navigation methods using strapdown inertial navigation system (SINS) and global navigation satellite system (GNSS) for unmanned aerial vehicles (UAVs) are studied herein to address two types of possible faults, system fault and measurement fault. Two typical approximation-based nonlinear filters, extended Kalman filter (EKF) and divided difference Kalman filters (DDKFs), are modified to be fault-tolerant for accurate navigation even in the presence of these faults. Criteria are presented to detect the faults, and related covariance matrices of the predicted errors are enlarged using fault accommodation factors to make the faulty state or measurement components be normally treated. Navigation simulations using the nonlinear quaternion-based navigation error model are given to demonstrate the effectiveness of the proposed methods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 40, January 2015, Pages 191–199
نویسندگان
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