Study of Real-time Filtering for an Inertial Measurement Unit (IMU) with Magnetometer in a 155mm Projectile

Fleck, V.; Sommer, E.; Brökelmann, Michael

doi:10.1109/plans.2006.1650676

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…According to the information above, the geomagnetic vector M can be transformed into axial component scalar ( M x NED , M y NED , M z NED ) in NED as formula (1), where M H is the horizontal scalar; M Z indicates the vertical scalar; M x NED , M y NED , M z NED respectively represent three axial component scalar in axes x, y, z in NED.…”

Section: Magnetometer Configurationsmentioning

confidence: 99%

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Spinning projectile’s angular measurement using crest and trough data of a geomagnetic sensor

Zhou

Zhang

Xiao

2018

Meas. Sci. Technol.

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As a projectile's attitude measurement is significant for flight control, the 'crest and trough method' only based on the geomagnetic sensor signal is proposed to improve the angular measurement accuracy. Firstly, the geomagnetic sensor distribution is introduced, then the mathematical deduction is expatiated and the procedure of the 'crest and trough method' is elaborated. Based on the drawbacks of existing methods, the proposed method focuses on improvements that are vital to enhance the measurement accuracy. Finally, simulation and experiment are carried out to prove the effectiveness of the proposed algorithm, and the results used to demonstrate that this method not only has no cumulative error, which occurs in micro-inertial sensors, but also has better precision than traditional geomagnetic angular measurement methods because of the twice faster angle update rate and elimination of interpolation.

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Section: Magnetometer Configurationsmentioning

confidence: 99%

“…Considering the size, weight, environment and energy consumption, the angular measurement sensors used on projectiles are supposed to be small, anti-interference and low-cost [1][2][3]. The micro-inertial sensors have relatively low accuracy and drift, which could lead to huge errors in attitude angles [4,5].…”

Section: Introductionmentioning

confidence: 99%

Spinning projectile’s angular measurement using crest and trough data of a geomagnetic sensor

Zhou

Zhang

Xiao

2018

Meas. Sci. Technol.

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“…Therefore, a high dynamic gyro [1]- [4] measurement device must be used to measure the attitude parameters of the high-spinning rigid body. In addition, the angular velocity of the rigid body can be obtained by using other sensors, including accelerometers [5]- [7], magnetometers [8]- [12], GPS [13]- [15], infrared sensors [16], star sensors [17], sun sensors [18] and so on.…”

Section: Introductionmentioning

confidence: 99%

Angular Motion Decoupling and Attitude Determination Based on High Dynamic Gyro

Liu

et al. 2019

IEEE Access

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Aiming at the problem of attitude angular motion coupling of a high-spinning rigid body, the model of the compound regular precession and the random angular motion is constructed by studying the angular motion characteristics of the high-spinning rigid body. This paper presents a new decoupling method with least squares angular rate zero-crossing detection. This method can estimate the coupling parameters in the model by estimating the angular motion period, and then, it extracts the real angular velocity information. In order to improve the attitude solution accuracy, a new four-subsample quaternion attitude algorithm is proposed by combining the angular velocity polynomial fitting and the attitude quaternion high-order Taylor series expansion. The self-developed high dynamic gyro and Missile-borne computer and simulation software are used to verify the attitude angle resolution accuracy between the traditional method and the new method proposed in this paper. The results show that the method is superior to the traditional algorithm, and increase by an order of magnitude. Finally, the flight test with the high dynamic gyro and Missile-borne computer is carried out to verify the real-time decoupling and attitude angle real-time solving ability of the proposed algorithm in the flight test. INDEX TERMS High dynamic gyro, compound angular motion, decoupling, zero-crossing detection, four-subsample quaternion.

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Study of Real-time Filtering for an Inertial Measurement Unit (IMU) with Magnetometer in a 155mm Projectile

Cited by 2 publications

References 2 publications

Spinning projectile’s angular measurement using crest and trough data of a geomagnetic sensor

Spinning projectile’s angular measurement using crest and trough data of a geomagnetic sensor

Angular Motion Decoupling and Attitude Determination Based on High Dynamic Gyro

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