Antenna pointing error effects on global capacity for broadband ACM systems

The existing mobile antenna networks in the military use have been operated by the manual pointing between two antennas. The work presented here describes the study of ATPC (Automatic Tracking and Pointing Control) system between facing antennas and the related tracking and pointing performances. This system is able to automatically track the maximum RSSI(Received Signal Strength Indication) value from the source's RF(Radio Frequency) signal and then control for maintaining the LOS(Line of Sight) between two antennas. The system has three major units; the driving unit consisting of motors, harmonic drives and encoders, the sensor unit with a GPS(Global Positioning System) and AHRS(Attitude and Heading Reference System) and the control unit regulating all the tracking and pointing events. By using PI(Proportional and Integral) controller, this system is able to properly track and point the other antenna under the external disturbance like the wind load. Both the simulation and the experimental works have been successively carried out to prove the performances of the system.

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The Study of an Automatic Tracking and Pointing Method and the Regarding System for Facing Two Antennas

Gimm

Cho²,

Lee³

2015

Journal of the Korea Institute of Military Science and Technolo

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Study on a user terminal‐assisted beam pointing measurement algorithm for very high‐throughput satellite systems

Qi,

Zhang,

Zhou

et al. 2024

Satell Commun Network

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SummaryHigh‐throughput satellites play an important role in emergency disaster relief, maritime, and other fields. A new generation of high‐throughput satellites with large deployable antennas and broadband beamforming networks, namely, very high‐throughput satellites (VHTS), is developing towards hundreds, even thousands of extremely narrow beams with Tbps capacity, which puts forward higher requirements for satellite pointing and system construction costs. In order to solve the problem that those traditional beam pointing measurement and calibration algorithms are difficult to apply or the performance is limited, this paper builds a service beam pointing measurement and calibration architecture. A user terminal‐assisted beam pointing measurement algorithm based on the Gauss‐Newton method is proposed for the general case, which can effectively reduce the construction cost of onboard and ground pointing measurement system, and improve the measurement accuracies of three axes of the satellite. Simulation results demonstrate the excellent performance under the ideal scenario. To achieve the future engineering application under the non‐ideal scenario, the terminal positioning error can be first neglected, then the pattern processing error and the terminal signal measurement error must be reduced by decreasing the pattern sampling interval, increasing the number of participant terminals, and other means. By comparing with a traditional beam pointing measurement algorithm, the proposed algorithm can achieve much lower beam pointing error than the baseline.

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Structure and controller design of a piezo-driven orientation stage for space antenna pointing

Shao

Song

et al. 2020

Mechanical Systems and Signal Processing

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Antenna pointing error effects on global capacity for broadband ACM systems

Cited by 5 publications

References 0 publications

The Study of an Automatic Tracking and Pointing Method and the Regarding System for Facing Two Antennas

The Study of an Automatic Tracking and Pointing Method and the Regarding System for Facing Two Antennas

Study on a user terminal‐assisted beam pointing measurement algorithm for very high‐throughput satellite systems

Structure and controller design of a piezo-driven orientation stage for space antenna pointing

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