Pointing Error Correction for Vehicle-Mounted Single-Photon Ranging Theodolite Using a Piecewise Linear Regression Model [PDF]
SensorsPointing error is a critical performance metric for vehicle-mounted single-photon ranging theodolites (VSRTs). Achieving high-precision pointing through processing and adjustment can incur significant costs.
Qingjia Gao +6 more
doaj +5 more sources
Applied Sciences, 2022 The terahertz frequency band has the advantages of having a large bandwidth, narrow beam, strong penetration, and high security, and is an important direction for the frequency expansion of next-generation satellite communications.
Yuanzhi He, Chensheng Ma
doaj +4 more sources
Pointing Error Correction for a Moving-Platform Electro-Optical Telescope Using an Optimized Parameter Model [PDF]
Sensors, 2023 This paper proposes a new optimized parameter model that enhances the pointing accuracy of moving-platform electro-optical telescopes (MPEOTs). The study begins by comprehensively analyzing the error sources, including the telescope and the platform ...
Yan He +4 more
doaj +4 more sources
Efficient MIMO Configuration for Bi-Directional Vertical FSO Link with Multiple Beam Induced Pointing Error [PDF]
Sensors, 2022 We proposed the statistical misalignment model and the power-efficient configuration of transceivers for bi-directional multi-input and multi-output (MIMO) based vertical free space optical (FSO) links.
Sung-Jin Kim, Sang-Kook Han
doaj +3 more sources
Propagation Characteristics of Hermite–Gaussian Beam under Pointing Error in Free Space
Photonics, 2022 Hermite–Gaussian (HG) beams have significant potential to improve the capacity of free-space optical communication (FSOC). The influence of pointing error on the propagation characteristics of an HG beam cannot be ignored in the FSOC system. Although the
Xin Liu +5 more
doaj +4 more sources
International Journal of Optomechatronics, 2021 The geometrical error caused pointing error is an inevitable problem in space satellite laser communication terminals which can affect the pointing accuracy of the APT (acquisition pointing and tracking) system greatly, in order to facilitate the ...
Furui Zhang +3 more
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Adaptive Beam Divergence Control to Mitigate Scintillation Effect Caused by Pointing Error in Vertical FSO Transmissions. [PDF]
Sensors (Basel), 2023 Free-space optical (FSO) communication has been studied for next-generation network systems. Because an FSO system establishes point-to-point communication links, maintaining alignment among the transceivers is a critical challenge.
Park HM, Hyun YJ, Han SK.
europepmc +2 more sources
Onboard Pointing Error Detection and Estimation of Observation Satellite Data Using Extended Kalman Filter. [PDF]
Comput Intell Neurosci, 2022 The satellite communication is embellished constantly by providing information, ensuring security, and enables the communication among huge at a particular time efficiently. The satellite navigation helps in determining the people's location.
Dhanalakshmi R +6 more
europepmc +2 more sources
A General Model for Pointing Error of High Frequency Directional Antennas [PDF]
IEEE Open Journal of the Communications Society, 2022 This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error for a general case at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links.
Mohammad Taghi Dabiri +4 more
doaj +2 more sources
Pointing error compensation of electro-optical detection systems using Gaussian process regression
International Journal of Metrology and Quality Engineering, 2021 Pointing accuracy is an important indicator for electro-optical detection systems, as it significantly affects the system performance. However, as a result of misalignment, nonperpendicularity in the manufacturing and assembly processes, as well as the ...
Tang Qijian +3 more
doaj +2 more sources