A Nonlinear Transfer Alignment of Distributed POS Based on Adaptive Second-Order Divided Difference Filter

Zou, Siyuan; Li, Jianli; Lu, Zixing; Liu, Quanpu; Fang, Jiancheng

doi:10.1109/jsen.2018.2869979

Cited by 18 publications

(3 citation statements)

References 23 publications

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“…Initial alignment can be divided into transfer alignment and self-alignment [9,10]. Unlike transfer alignment, self-alignment does not require reference attitude information for initial alignment [11][12][13]. Self-alignment is usually achieved in two ways.…”

Section: Introductionmentioning

confidence: 99%

Anti-disturbance self-alignment method for dual-axis rotational inertial navigation system under marine mooring conditions

Lin,

Miao,

Zhou

2024

Meas. Sci. Technol.

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Under the marine mooring conditions, the inertial navigation system is often disturbed by angular and linear motions, and it is difficult to perform self-alignment with high accuracy. To solve this problem, an anti-disturbance self-alignment method for dual-axis rotational inertial navigation system is proposed. The method transforms the self-alignment problem into an attitude matrix solving problem, so as to deal with the disturbance of angular motion. By analyzing the relationship between the amount of measurement data and the accuracy of self-alignment, the optimal integration time is designed and a partial integral algorithm is proposed. Furthermore, the influence of initial velocity error on self-alignment under linear motion disturbance conditions is analyzed, and an initial velocity compensation method is proposed. Experimental results show that high-accuracy self-alignment can be achieved using the proposed method under the joint disturbance of angular and linear motions.

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Section: Introductionmentioning

confidence: 99%

Anti-disturbance self-alignment method for dual-axis rotational inertial navigation system under marine mooring conditions

Lin,

Miao,

Zhou

2024

Meas. Sci. Technol.

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“…Aiming at this problem, distributed POS is developed to measure multi-antenna motion and relative motion for array SAR, and is composed of a high-precision POS and several IMUs [18]. Its working principle is shown as follows.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Array POS for Airborne Remote Sensing Motion Compensation

Bao

et al. 2022

Remote Sensing

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Multi-antenna airborne remote sensing systems have received more attention recently because they can realize high-resolution three-dimensional (3-D) imaging, such as array Synthetic Aperture Radar (SAR). Their high-precision imaging needs multi-antenna motion and relative motion between antennas. However, the existing facility and technology hardly meet the motion measurement precision demand of array SAR. To solve this problem, an array Position and Orientation System (POS) for airborne remote sensing motion compensation is designed and developed. It is composed of a high-precision POS, several small-size Inertial Measurement Units (IMU), and a 6-D deformation measurement system based on Fiber Bragg Grating (FBG) sensors. Firstly, the transfer alignment method based on 6-D deformation is used to measure the relative motion between array POS. Then, the motion conversion method from array POS to array SAR is presented to obtain the multi-antenna motion and relative motion between antennas. Finally, the ground experiment results identify that the accuracies of multi-antenna position, multi-antenna attitude, and flexible baseline length between antennas are superior to 3 cm, 0.01°, and 0.1 mm, respectively, which can meet the motion measurement precision demand of array SAR.

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“…However, other reports have focused on the transfer alignment. Zou et al proposed a nonlinear transfer alignment of distributed position and orientation system (POS) based on adaptive second-order divided difference filter [11]. They solved the problem of the lever-arm deformation in transfer alignment resulting in a nonlinear error and time-varying measurement noise covariance.…”

Section: Introductionmentioning

confidence: 99%

Research on In-Flight Alignment for Micro Inertial Navigation System Based on Changing Acceleration using Exponential Function

Yun

Zhou

2018

Micromachines

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In order to guarantee the stable flight of a guided projectile, it is difficult to realize in-flight alignment for the micro inertial navigation system (MINS) during its short flight time. In this paper, a method based on changing acceleration using exponential function is proposed. First, double-vector observations were derived. Then the initial attitude for the guided projectiles was estimated by the regressive quaternion estimation (QUEST) algorithm. Further, the estimated errors were analyzed, and the reason for using the changing acceleration for the in-flight alignment was explained. A simulation and semi-physical experiment was performed to show the effectiveness of the proposed method. The results showed that the initial attitude error for the rolling angle was about 0.35°, the pitch angle was about 0.1° and the heading angle was about 0.6°, in which the initial shooting angle was between 15° and 55°. In future studies, the field experiments will be carried out to test the stability of the proposed in-flight alignment for guided projectiles.

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A Nonlinear Transfer Alignment of Distributed POS Based on Adaptive Second-Order Divided Difference Filter

Cited by 18 publications

References 23 publications

Anti-disturbance self-alignment method for dual-axis rotational inertial navigation system under marine mooring conditions

Anti-disturbance self-alignment method for dual-axis rotational inertial navigation system under marine mooring conditions

Design and Development of Array POS for Airborne Remote Sensing Motion Compensation

Research on In-Flight Alignment for Micro Inertial Navigation System Based on Changing Acceleration using Exponential Function

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