Unified approach to inertial navigation system error modeling

1992 ◽  
Vol 15 (3) ◽  
pp. 648-653 ◽  
Author(s):  
Drora Goshen-Meskin ◽  
Itzhack Y. Bar-Itzhack
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Inertial Navigation ◽  
Error Modeling ◽  
Unified Approach ◽  
System Error

scholarly journals Error Modeling, Calibration, and Nonlinear Interpolation Compensation Method of Ring Laser Gyroscope Inertial Navigation System

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Jianli Li ◽  
Yanhai Ma ◽  
Chen Xiyuan
Keyword(s):  
Navigation System ◽  
Ring Laser ◽  
Inertial Navigation System ◽  
Inertial Navigation ◽  
Calibration Method ◽  
Error Modeling ◽  
Working Environment ◽  
Nonlinear Interpolation ◽  
Ring Laser Gyroscope ◽  
Laser Gyroscope

In order to improve the precision of Strapdown Inertial Navigation System (SINS) and reduce the complexity of the traditional calibration method, a novel calibration and compensation scheme is proposed. An optimization calibration method with four-direction rotations is designed to calculate all error coefficients of Ring Laser Gyroscope (RLG) SINS in a series of constant temperatures. According to the actual working environment, the temperature errors of RLG SINS are compensated by a nonlinear interpolation compensation algorithm. The experimental results show that the inertial navigation errors of the proposed method are reduced.

An Adaptive Level Damped Algorithm Based on PINS for Ship

2013 ◽  
Vol 760-762 ◽  
pp. 2162-2166
Author(s):  
Pei Yu ◽  
Gong Liu Yang
Keyword(s):  
Theoretical Analysis ◽  
Real Time ◽  
Navigation System ◽  
Inertial Navigation System ◽  
Inertial Navigation ◽  
System Error ◽  
Sea Current

The inertial navigation system error caused by sea current and log error greatly oscillates. In order to evaluate the effectiveness of damping attitude, the vehicles movement should be detected in real-time. For this reason, a novel adaptive level damped algorithm was presented in this paper. According to the characteristics of the movement of the ship, this algorithm has determined when to turn into the damp loop according to the change of acceleration. Theoretical analysis and Simulations results show that the adaptive level damped algorithm could damp most of the Schuler and Foucault oscillations period, and efficiently improve the precision of the PINS on ships.

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