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
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 +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 +2 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 +3 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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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 +3 more sources
A deep learning approach for predicting the antenna pointing error caused by transmission faults with simulation data [PDF]
Scientific ReportsReflector antenna has been widely used in deep space exploration, radar warning, and other fields, all of which requires high pointing accuracy. The antenna elevation bearings are the key component that guarantees its pointing accuracy, while any ...
Lihui Chen +5 more
doaj +2 more sources
A Reverse-Design Strategy for the Track Error of the Qi Tai Telescope Based on Pointing Accuracy
Engineering, 2022 The Qi Tai Telescope (QTT), which has a 110 m aperture, is planned to be the largest scale steerable telescope in the world. Ideally, the telescope’s repeated pointing accuracy error should be less than 2.5 arc seconds (arcsec); thus, the telescope ...
Na Li +4 more
doaj +3 more sources
A High-Pointing-Accuracy Implementation Method for an 18-m Antenna Based on a Multi-Error-Source Coupled Model [PDF]
SensorsHigh-frequency VLBI (Very Long Baseline Interferometry) observations impose stringent requirements on antenna pointing accuracy. This paper proposes a high-precision pointing implementation method that integrates a multi-error-source coupled model with ...
Wei Zhang +6 more
doaj +2 more sources
IEEE Photonics Journal, 2021 In free-space optical (FSO) communication, high-precision pointing is a critical technology required for rapid acquisition to reduce link establishment time and increase communication time.
Chao Peng +8 more
doaj +1 more source