Magnetometer-based Attitude and Rate Estimation for Spacecraft with Wire Booms

Humphreys, Todd E.; Psiaki, Mark L.; Klatt, E.; Powell, Steven P.; Kintner, P. M.

doi:10.2514/1.7603

Cited by 25 publications

(3 citation statements)

References 10 publications

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“…One sphere pair on each payload was equipped with an HF snapshot receiver that took 4096 samples at 4.8 MHz (8.53 ms of data) once every 10 ms. All data presented were taken with the VLF (20 Hz-20 kHz) plasma wave receivers. Antenna orientation was deduced post flight from a modified version of the attitude determination filter/smoother presented by Humphreys et al [2005].…”

Section: Methodsmentioning

confidence: 99%

Multipayload interferometric wave vector determination of auroral hiss

et al. 2012

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.[1] We extend traditional, single payload, interferometric techniques to a multiple payload sounding rocket mission, and apply these techniques to measure the parallel and perpendicular wavelength of auroral VLF hiss from 8 kHz-20 kHz. We model the wavelength distribution of auroral hiss as a cone at a fixed angle with respect to the magnetic field that is isotropically distributed in the perpendicular plane. We apply this model to calculate the interferometric observables, coherency and phase, for a sounding rocket mission whose wave electric field receivers are on payloads that are separated 2-3 km along the magnetic field and 55-200 m across the magnetic field. Using an interferometer formed by comparing the collinear sphere-to-skin electric field antennas on a single payload, we estimate a lower limit on the perpendicular wavelength of VLF hiss of $60 m. Analysis of coherency and phase due to this conical wave vector distribution for a multipayload interferometer reveals the existence of a spin dependent coherency pattern. From this coherency pattern we generate an upper limit perpendicular wavelength estimate for VLF hiss of $350 m. The inter-payload phase gives an accurate estimate of the parallel wavelength of $6000-8000 m. This parallel wavelength is combined with the lower (upper) limit perpendicular wavelength estimates to generate upper (lower) limits on wave-normal angle. These limits are each within one degree of the predicted electrostatic whistler wave resonance cone angle verifying that VLF hiss propagates on this resonance cone.

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Section: Methodsmentioning

confidence: 99%

Multipayload interferometric wave vector determination of auroral hiss

et al. 2012

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“…The standard way to obtain heading information is by using a tri-axis magnetometer, which can measure the signal intensity of the magnetic field in three orthogonal directions. For example, they act as heading sensors in aircraft and marine navigation, and also serve as attitude sensors in satellite navigation and control system applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Interference-Resistant Heading Measurement for Location-Based Mobile Services

Wu¹,

Xie

Chen

et al. 2013

2013 IEEE 10th International Conference on High Performance Computing and Communications &Amp; 2013 IEEE International Conferen

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Accurate heading information is crucial for many mobile services such as navigation, autonomous vehicles, and robot applications. The standard way to obtain heading information is by using a tri-axis magnetometer, which can measure the signal intensity of the magnetic field in three orthogonal directions. However, a magnetometer is known to be highly susceptible to environmental interferences that may easily generate error up to thousands of nano-tesla, causing unacceptable errors (e.g., 40 degrees) in the direction output and rendering the mobile service useless. We present a novel design for interference resistant heading measurement using multiple magnetometers. In this design, multiple magnetometers are placed around a circle, imitating the manual rotation of a single magnetometer. This arrangement allows us to automatically calibrate the devices against external interference, using the classic ellipse fitting method. We have implemented a system consisting of a STM32F103RC microcontroller and six AKM8975 magnetic sensors. Evaluation in realistic environments shows that our design can adaptively update the calibration parameters, reducing the original heading error from 150 degrees to below 2.5 degrees, and the heading error remains stable in environments with different patterns of magnetic perturbation.

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“…Magnetometers are a key aiding sensor for attitude estimation in low-cost, high performance navigation systems [1,2,3,4], with widespread application to commercial and military platforms. These inexpensive, low power sensors allow for accurate attitude estimates by comparing the magnetic field vector observation in body frame coordinates with the vector representation in Earth frame coordinates, available from geomagnetic charts and software.…”

Section: Introductionmentioning

confidence: 99%

Automatic Calibration of the 3D Vector Magnetometer

2012

AMR

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Embedded sensors are an emerging trend in mobile consumer devices. In this work a new algorithm is derived for the onboard calibration of three-axis magnetometers. The proposed calibration method is written in the sensor frame, and compensates for the combined effect of all linear time-invariant distortions, namely soft iron, hard iron, three-dimensional sensor non-orthogonally, scale factors, null-shift, arbitrary bias, among others. The new algorithm can be separated into two steps: In the first step, obtain the ellipsoid fitting parameters from comparing the difference between the measured value and the actual vector. In a second step, a calibration algorithm is adopted to compensate for magnetometers distortions. According to the model parameters the measured data is corrected to improve the precision of magnetometer. Simulation and experimental results with sensors data are presented and discussed, supporting the application of the algorithm to commercial and military platforms.

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Magnetometer-based Attitude and Rate Estimation for Spacecraft with Wire Booms

Cited by 25 publications

References 10 publications

Multipayload interferometric wave vector determination of auroral hiss

Multipayload interferometric wave vector determination of auroral hiss

Interference-Resistant Heading Measurement for Location-Based Mobile Services

Automatic Calibration of the 3D Vector Magnetometer

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