Kinematics and Tracking Control of a Four Axis Antenna for Satcom on the Move

Hancioglu, Oguz Kaan; Celik, Mustafa; Tümerdem, Uğur

doi:10.23919/ipec.2018.8507963

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…The three-axis SOTM antenna structure has three rotating axes, namely the azimuth axis, the pitch axis and the roll axis. In this section, we introduce an NMDH method based on the modified DH method [26][27][28][29] to establish the kinematic model of the three-axis SOTM antenna.…”

Section: Kinematic Modeling Of Three-axis Sotm Antennamentioning

confidence: 99%

Rapid Tracking Satellite Servo Control for Three-Axis Satcom-on-the-Move Antenna

Ren,

Ji,

Han

et al. 2024

Aerospace

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To overcome the possible gimbal lock problem of the dual-axis satcom-on-the-move (SOTM) antenna, a three-axis tracking satellite SOTM antenna structure appears. The three-axis SOTM antenna is realized by adding a roll axis to the azimuth axis and pitch axis in the dual-axis SOTM structure. There is coupling among the azimuth axis, pitch axis and roll axis in the mechanical structure of the three-axis SOTM antenna, which makes the kinematic modeling of the antenna difficult. This paper introduces a three-axis SOTM antenna kinematic modeling method based on the modified Denavit–Hartenberg (MDH) method, named the new modified Denavit–Hartenberg (NMDH) method. In order to meet the modeling requirements of the MDH method, the NMDH method adds virtual coordinate systems and auxiliary coordinate systems to the three-axis SOTM antenna and obtains the kinematic model of the three-axis SOTM antenna. During the motion of the carrier, the SOTM antenna needs to adjust the antenna pointing in real time according to the changes of the location and attitude of the moving carrier. Therefore, this paper designs a servo control system based on the active disturbance rejection controller (ADRC), introducing a smooth and continuous ADRC fal function to enhance the tracking speed of the servo control system and reduce the overshoot of the output response. Finally, system experiments were carried out with a 60 cm caliber three-axis SOTM antenna. The experiment results show that the proposed servo control method achieves higher antenna tracking satellite accuracy and better communication effects.

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Section: Kinematic Modeling Of Three-axis Sotm Antennamentioning

confidence: 99%

Rapid Tracking Satellite Servo Control for Three-Axis Satcom-on-the-Move Antenna

Ren,

Ji,

Han

et al. 2024

Aerospace

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“…Polarization axis is related with the RF signal polarization. Cross-level axis is added to the elevation axis in order to avoid the singularity region [4]. Polarization is not the concern of this article; we assume that the antenna has the correct polarization, so the axis does not need to be controlled.…”

Section: Description Of Antenna Systemmentioning

confidence: 99%

Estimation of Maximum Signal Strength for Satellite Tracking Based on the Extended Kalman Filter

Bastl

Spáčil

Najman

et al. 2023

AiMT

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The article presents an improved satellite tracking approach using the extended Kalman filter within the control systems of the moving antenna. The main focus is on the issue of maintaining the maximum signal strength during vehicle movement, gyroscope and GPS sensors error and the deterioration of reception due to changing conditions (weather, obstacles). Typically used techniques are based on ad-hoc scanning of the maximum value of the RF signal. The approach presented in this article might be used as a much more consistent and elegant alternative to these algorithms. To prove the function of the presented algorithm, simulations of several different scenarios are performed. Based on these simulations, the robustness and speed of the newly designed algorithm are evaluated.

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“…Various satellite tracking methods that combine mechanical tracking with electronic beam control have appeared in various literatures [37][38][39][40], which is the mainstream of the development of communication in motion technology. Among them, some use the single-pulse method, and some use the conical scanning method to track satellite signals.…”

Section: Overview Of the Development Of Sotmmentioning

confidence: 99%

Synthetic Deviation Correction Method for Tracking Satellite of the SOTM Antenna on High Maneuverability Carriers

Han

Ren

et al. 2022

Electronics

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Using Satcom-On-The-Move (SOTM) antenna on moving carriers to track communication satellites is a rapidly developing technology. The normal running of the SOTM system requires its antenna beam to track the target communication satellite accurately at all times. However, due to the errors of the measurement system, tracking deviation will inevitably occur, especially when the moving carrier is in ahigh maneuvering state, which may cause communication failures. In this paper, we propose a synthetic deviation correction algorithm; when the carrier is in the high maneuvering state, the measurement error is converted into the deviation of the azimuth as well as the pitch of the antenna that needs to be corrected to correct the pointing of the SOTM antenna. Finally, the proposed algorithm is verified by experiments. The experimental results show that the proposed algorithm has a good isolation effect on the high maneuverability of the carrier, which means that the pointing to the communication satellite is more accurate and achieves better communication quality under the high maneuvering state. The effectiveness of the algorithm is illustrated.

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Kinematics and Tracking Control of a Four Axis Antenna for Satcom on the Move

Cited by 11 publications

References 5 publications

Rapid Tracking Satellite Servo Control for Three-Axis Satcom-on-the-Move Antenna

Rapid Tracking Satellite Servo Control for Three-Axis Satcom-on-the-Move Antenna

Estimation of Maximum Signal Strength for Satellite Tracking Based on the Extended Kalman Filter

Synthetic Deviation Correction Method for Tracking Satellite of the SOTM Antenna on High Maneuverability Carriers

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