Quad-Mag board for CubeSat applications

IF 1.8 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Geoscientific Instrumentation Methods and Data Systems Pub Date : 2022-11-16 DOI:10.5194/gi-11-375-2022

Brady P. Strabel, L. Regoli, M. Moldwin, L. Ojeda, Yining Shi, J. Thoma, Isaac Narrett, Bret Bronner, Matthew Pellioni

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引用次数: 2

Abstract

Abstract. The design, characteristics, and performance of a CubeSat magnetometer board (Quad-Mag) equipped with four PNI RM3100 magnetometers is presented. The low size, weight, power, and cost of the RM3100 enables the inclusion of four sensors on a single board, allowing a potential factor of 2 reduction in the noise floor established for an individual sensor via oversampling with multiple sensors. The instrument experimentally achieved a noise floor of 5.34 nT (individual axis), averaging across each axis of the four magnetometers, at a 65 Hz sampling rate. This approaches the theoretically established limit for the system of 4.37 nT at 40 Hz. A single onboard Texas Instrument MSP430 microcontroller handles synchronization of the magnetometers and facilitates data collection through a simple UART-based command interface to a host system. The Quad-Mag system has a mass of 59.05 g and total power consumption of 23 mW while sampling and 14 mW while idle. The Quad-Mag enables nearly 1 nT magnetic field measurements at 1 Hz using commercial off-the-shelf sensors for space applications under optimal conditions.

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用于立方体卫星应用的四磁板

摘要介绍了一种配备4台PNI RM3100磁强计的CubeSat磁强计板(quadg - mag)的设计、特点和性能。RM3100的低尺寸，重量，功率和成本使得在一块电路板上包含四个传感器，允许通过多个传感器的过采样为单个传感器建立的噪声底降低2的潜在因素。该仪器在实验中获得了5.34 nT(单个轴)的噪声底，在四个磁强计的每个轴上平均，采样率为65 Hz。这接近在40 Hz时4.37 nT系统的理论极限。单板载德州仪器MSP430微控制器处理磁力计的同步，并通过一个简单的基于uart的命令接口到主机系统方便数据收集。Quad-Mag系统的质量为59.05 g，采样时的总功耗为23 mW，空闲时为14 mW。Quad-Mag使用商用现成的传感器在最佳条件下为空间应用提供近1nt的1hz磁场测量。

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来源期刊

Geoscientific Instrumentation Methods and Data Systems GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

3.70

自引率

0.00%

发文量

审稿时长

37 weeks

期刊介绍： Geoscientific Instrumentation, Methods and Data Systems (GI) is an open-access interdisciplinary electronic journal for swift publication of original articles and short communications in the area of geoscientific instruments. It covers three main areas: (i) atmospheric and geospace sciences, (ii) earth science, and (iii) ocean science. A unique feature of the journal is the emphasis on synergy between science and technology that facilitates advances in GI. These advances include but are not limited to the following: concepts, design, and description of instrumentation and data systems; retrieval techniques of scientific products from measurements; calibration and data quality assessment; uncertainty in measurements; newly developed and planned research platforms and community instrumentation capabilities; major national and international field campaigns and observational research programs; new observational strategies to address societal needs in areas such as monitoring climate change and preventing natural disasters; networking of instruments for enhancing high temporal and spatial resolution of observations. GI has an innovative two-stage publication process involving the scientific discussion forum Geoscientific Instrumentation, Methods and Data Systems Discussions (GID), which has been designed to do the following: foster scientific discussion; maximize the effectiveness and transparency of scientific quality assurance; enable rapid publication; make scientific publications freely accessible.