scholarly journals Magnetogama: An Open Schematic Magnetometer

2017 ◽  
Author(s):  
◽  
Nurul Khakhim ◽  
Tri Kuntoro ◽  
Djati Mardiatno ◽  
Afif Rakhman ◽  
...  
Keyword(s):  
Open Access ◽  
Diurnal Variation ◽  
Unmanned Aerial Vehicle ◽  
Ease Of Use ◽  
Fluxgate Magnetometer ◽  
Or Education ◽  
Standard Design ◽  
Aerial Vehicle

Abstract. Magnetogama is an open schematic hand-assembled fluxgate magnetometer. Compared to other magnetometer, Magnetogama is superior in terms of its price and its ease of use. Practically Magnetogama can be used either in land or at-tached to unmanned aerial vehicle (UAV). Magnetogama was designed in order to give an open access to a cheap and accurate alternative of magnetometer sensor, therefore it can be used as standard design which is directly applicable to low budget company or education purposes. Schematic, code and several verification tests were presented ensuring its reproducibility. Magnetogama has been tested with two kind of tests, diurnal variation comparison with two nearest observatorium at Lear-month (LRM) and Kakadu (KDU).

scholarly journals Magnetogama: an open schematic magnetometer

2017 ◽  
Vol 6 (2) ◽  
pp. 319-327 ◽  
Author(s):  
◽  
Nurul Khakhim ◽  
Tri Kuntoro ◽  
Djati Mardiatno ◽  
Afif Rakhman ◽  
...  
Keyword(s):  
Open Access ◽  
Unmanned Aerial Vehicle ◽  
Ease Of Use ◽  
Fluxgate Magnetometer ◽  
Or Education ◽  
Standard Design ◽  
Aerial Vehicle

Abstract. Magnetogama is an open schematic hand-assembled fluxgate magnetometer. Compared to another magnetometer, Magnetogama has more benefit concerning its price and its ease of use. Practically Magnetogama can be utilized either in land or attached to an unmanned aerial vehicle (UAV). Magnetogama was designed to give open access to a cheap and accurate alternative to magnetometer sensor. Therefore it can be used as a standard design which is directly applicable to the low-budget company or education purposes. Schematic, code and several verification tests were presented in this article ensuring its reproducibility. Magnetogama has been tested with two kind of tests: a comparison with two nearest observatories at Learmonth (LRM) and Kakadu (KDU) and the response of magnetic substance.

scholarly journals Identification of a simplified mathematical model of an unmanned aerial vehicle

2020 ◽  
pp. 26-33
Author(s):  
A. A. Lobaty ◽  
Y. F. Yatsyna ◽  
S. S. Prohorovith ◽  
Y. A. Hvitko
Keyword(s):  
Mathematical Model ◽  
Transfer Function ◽  
Unmanned Aerial Vehicle ◽  
Center Of Mass ◽  
Experimental Studies ◽  
Vertical Plane ◽  
Parametric Identification ◽  
Ease Of Use ◽  
Aerial Vehicle ◽  
Discrete Values

The problem of determining the shape and parameters of a mathematical model in the form of a transfer function for the movement of an unmanned aerial vehicle (UAV) in the vertical plane of space is solved. The angle of deviation of the Elevator is considered as the input signal, and the pitch angle of the UAV is considered as the output signal. We use the results of experimental studies of UAV flight, which are considered as known values of input and output signals under specified flight conditions. The measured discrete values of the experimental results are approximated by a fourth-order polynomial based on regression analysis for ease of use in identification. The analytical substantiation of the need to apply the methods of linearization of the mathematical model of UAV movement and the accepted assumptions for obtaining differential equations of UAV movement relative to the center of mass, allowing to synthesize the required transfer function of the corresponding element of the UAV control system. The results of computer modeling confirmed the validity of the synthesized mathematical model obtained on the basis of structural and parametric identification. This approach can be used to obtain simplified mathematical models that are used to solve problems of synthesis and optimization of control systems not only for UAVS, but also for other dynamic objects.

Characterizing Electromagnetic Interference Signals for Unmanned Aerial Vehicle Geophysical Surveys

Geophysics ◽  
2021 ◽  
pp. 1-71
Author(s):  
Callum Walter ◽  
Alexander Braun ◽  
Georgia Fotopoulos
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Electromagnetic Interference ◽  
High Frequency ◽  
Rotation Frequency ◽  
Mitigation Strategies ◽  
Fluxgate Magnetometer ◽  
Geophysical Surveys ◽  
Aerial Vehicle ◽  
Interference Signals ◽  
Electromagnetic Signals

The development of a functional Unmanned Aerial Vehicle (UAV) mounted aeromagnetic system requires integrating a magnetometer payload onboard a UAV platform in a manner that preserves the integrity of the total magnetic field measurements. One challenge when developing these systems is accounting for the sources of in-flight magnetic and electromagnetic interference signals that are greater than the resolvability threshold of the magnetometer. Electromagnetic interference generated by the platform has the potential to be mitigated using several techniques such as magnetic shielding, filtering, or compensation; and can be attenuated by strategically positioning the magnetometer at a distance from the UAV. The integration procedure and selection of a mitigation strategy can be informed by characterizing the electromagnetic interference generated by the platform. Scalogram analysis was employed to characterize the high-frequency electromagnetic signals generated by a multi-rotor UAV’s electromagnetic motors. A low sensitivity (7 nT) vector, fluxgate magnetometer was used to measure the electromagnetic interference generated by two unique multi-rotor UAVs in a controlled lab setting. Results demonstrated three spectrally distinct electromagnetic signals, each with unique frequency and amplitude, generated by each UAV platform. The frequency of these electromagnetic interference signals was found to be directly proportional to the applied rotation frequency of the electromagnetic motor. The aforementioned knowledge was applied to UAV field surveys to assess the high-frequency electromagnetic interference signals experienced. This was achieved by using a high sensitivity (0.01 nT), scalar optically pumped magnetometer with a 1000 Hz sampling frequency. The results show that adequate sensor placement and pre-flight evaluation of the platform-sensor interactions provide useful mitigation strategies, which can compensate for electromagnetic interference signals generated by the UAV platform during aeromagnetic surveys.

Study on Fault Diagnosis of Planetary Gearbox in Unmanned Aerial Vehicle Using Multi sensor Data

2020 ◽  
Vol 20 (4) ◽  
pp. 332-342
Author(s):  
Hyung Jun Park ◽  
Seong Hee Cho ◽  
Kyung-Hwan Jang ◽  
Jin-Woon Seol ◽  
Byung-Gi Kwon ◽  
...  
Keyword(s):  
Fault Diagnosis ◽  
Unmanned Aerial Vehicle ◽  
Sensor Data ◽  
Planetary Gearbox ◽  
Aerial Vehicle

Results of Spatial Structure of Atmosphere Radiation in a Spectral Range (1.5–2) µm Research

2018 ◽  
pp. 7-13
Author(s):  
Anton M. Mishchenko ◽  
Sergei S. Rachkovsky ◽  
Vladimir A. Smolin ◽  
Igor V . Yakimenko
Keyword(s):  
Spatial Structure ◽  
Unmanned Aerial Vehicle ◽  
Wavelength Range ◽  
Spectral Range ◽  
Near Ir ◽  
Optoelectronic Systems ◽  
Aerial Vehicle

Results of experimental studying radiation spatial structure of atmosphere background nonuniformities and of an unmanned aerial vehicle being the detection object are presented. The question on a possibility of its detection using optoelectronic systems against the background of a cloudy field in the near IR wavelength range is also considered.

Positioning the Angle of Attack Sensor on an Unmanned Aerial Vehicle Wing

2016 ◽  
Vol 3 (1) ◽  
pp. 25-33
Author(s):  
Amir Birjandi ◽  
◽  
Valentin Guerry ◽  
Eric Bibeau ◽  
Hamidreza Bolandhemmat ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Angle Of Attack ◽  
Aerial Vehicle
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