Lian Tao

TL;DR: In this article, a biaxial rotation modulation method was proposed to realize the modulation of errors of an inertia device in the strapdown inertial navigation system and improve the navigation precision of the system.

TL;DR: In this paper, a completely independent relative inertial navigation method is proposed to determine an azimuth angle and a latitude under the special condition that an accurate initial position cannot be obtained, and the method comprises the following steps of: setting an initial course angle and an attitude angle as 0 degree and setting initial longitude and latitude as 0 degrees, by using angular velocity and specific force output by a gyroscope and an accelerometer, figuring out a navigation parameter by using a traditional navigation calculating method; estimating and revising an initial error in a closed loop; carrying out navigation

TL;DR: In this paper, an estimation and error compensation method for an inner lever arm of a strapdown inertial navigation system was proposed, which comprises the steps of initially aligning, estimating parameters of the inner arm, and compensating the error of the internal lever arm.

TL;DR: In this article, a calibration method for installation error angles between a dual-shaft rotation inertial navigation system's rotating shafts and sensitive shafts was proposed, which can improve the attitude demodulation of the system.

TL;DR: In this paper, an inertial navigation system zero velocity update method for a surveying and mapping vehicle is presented, which consists of the following steps: filtering parameter initializing; inertial navigations and filter state transition matrix discretizing; calculating speed integration observed quantity and measuring matrix; UD decomposition Kalman filtering time update calculating; sending a zero-velocity update application; UDNK filtering measuring updating; inertIAL system error correcting; repeating the steps until the work of a positioning orientating system is finished.