In the missile-borne Strapdown Inertial Navigation System/Global Navigation Satellite System(SINS/GNSS)integrated navigation system,due to the factors such as the high dynamics,the signal blocking by obstacles,the sig...In the missile-borne Strapdown Inertial Navigation System/Global Navigation Satellite System(SINS/GNSS)integrated navigation system,due to the factors such as the high dynamics,the signal blocking by obstacles,the signal intefereces,etc.,there always exist pulse interferences or measurement information interruptions in the satellite receiver,which make nonstationary measurement process.The traditional Kalman Filter(KF)can tackle the state estimation problem under Gaussian white noise,but its performance will be significantly reduced under nonGaussian noises.In order to deal with the non-Gaussian conditions in the actual missile-borne SINS/GNSS integrated navigation systems,a Maximum Versoria Criterion Extended Kalman Filter(MVC-EKF)algorithm is proposed based on the MVC and the idea of M-estimation,which assigns a smaller weight to the anomalous measurements so as to suppress the influence of anomalous measurements on the state estimation while maintaining a relatively low calculation cost.Finally,the integrated navigation simulation experiments prove the effectiveness and robustness of the proposed algorithm.展开更多
为了测量和分析弹丸侵彻过程中的过载,利用ICP传感器设计了一种可重复使用的弹载测试系统。针对ICP传感器二线制接口的特殊性,搭建了微型恒压恒流电源。通过多次阈值比较触发系统数据采集,对存储数据重新拼接,还原了一部分触发点前和整...为了测量和分析弹丸侵彻过程中的过载,利用ICP传感器设计了一种可重复使用的弹载测试系统。针对ICP传感器二线制接口的特殊性,搭建了微型恒压恒流电源。通过多次阈值比较触发系统数据采集,对存储数据重新拼接,还原了一部分触发点前和整个触发后的过载状况。使用马歇特锤装置在其最大值44 000 g下连续5次冲击后,系统仍能正常工作,验证了测试系统具备抗高过载能力。以100 k Hz采样率采集马歇特锤的过载变化,数据结果符合该落锤的响应特性,验证了该测试系统具备可靠采集和存储弹丸侵彻过载的能力。展开更多
基金co-supported by the National Natural Science Foundation of China(No.62073264)the Key Research and Development Project of Shaanxi Province,China(No.2021ZDLGY01-01 and 2020ZDLGY06-02)+2 种基金National Natural Science Foundation of China(No.61803309)China Postdoctoral Science Foundation(No.2018M633574)the Aeronautical Science Foundation of China(No.2019ZA053008)。
文摘In the missile-borne Strapdown Inertial Navigation System/Global Navigation Satellite System(SINS/GNSS)integrated navigation system,due to the factors such as the high dynamics,the signal blocking by obstacles,the signal intefereces,etc.,there always exist pulse interferences or measurement information interruptions in the satellite receiver,which make nonstationary measurement process.The traditional Kalman Filter(KF)can tackle the state estimation problem under Gaussian white noise,but its performance will be significantly reduced under nonGaussian noises.In order to deal with the non-Gaussian conditions in the actual missile-borne SINS/GNSS integrated navigation systems,a Maximum Versoria Criterion Extended Kalman Filter(MVC-EKF)algorithm is proposed based on the MVC and the idea of M-estimation,which assigns a smaller weight to the anomalous measurements so as to suppress the influence of anomalous measurements on the state estimation while maintaining a relatively low calculation cost.Finally,the integrated navigation simulation experiments prove the effectiveness and robustness of the proposed algorithm.
文摘为了测量和分析弹丸侵彻过程中的过载,利用ICP传感器设计了一种可重复使用的弹载测试系统。针对ICP传感器二线制接口的特殊性,搭建了微型恒压恒流电源。通过多次阈值比较触发系统数据采集,对存储数据重新拼接,还原了一部分触发点前和整个触发后的过载状况。使用马歇特锤装置在其最大值44 000 g下连续5次冲击后,系统仍能正常工作,验证了测试系统具备抗高过载能力。以100 k Hz采样率采集马歇特锤的过载变化,数据结果符合该落锤的响应特性,验证了该测试系统具备可靠采集和存储弹丸侵彻过载的能力。
