Results 11 to 20 of about 78,267 (285)
EFFECT OF ANTENNA POINTING ERRORS ON SAR IMAGING CONSIDERING THE CHANGE OF THE POINT TARGET LOCATION [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Towards spaceborne spotlight SAR, the antenna is regulated by the SAR system with specific regularity, so the shaking of the internal mechanism is inevitable. Moreover, external environment also has an effect on the stability of SAR platform.
X. Zhang +4 more
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New Results for the Pointing Errors Model in Two Asymptotic Cases
IEEE Photonics Journal, 2023 Several precise and computationally efficient results for pointing errors models in two asymptotic cases are derived in this paper. The normalized mean-squared error (NMSE) performance metric is employed to quantify the accuracy of different models.
Maoke Miao +3 more
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Effect of Pointing Errors on the Performance of Hybrid FSO/RF Networks
IEEE Access, 2019 The performance of a free space optics (FSO) transmission suffers from the atmospheric turbulence and the attenuation in foggy environment. By employing relay nodes, the error rate and the coverage area of the FSO communication system can be ...
Shubha Sharma +2 more
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IEEE AccessThe major problems in an underwater wireless optical communication (UWOC) link are turbulence induced fading and pointing errors. In this paper, we have investigated the bit error rate (BER) performance of spatially coupled low-density parity-check (SC ...
Sravan Kumar Padala, John D'souza
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Requirements and Solutions for Robust Beam Alignment in Fiber-Coupled Free-Space Optical Systems
Photonics, 2023 The continuous growth of Internet data traffic is pushing the current radio-frequency wireless technologies up to their physical limits. To overcome the upcoming bandwidth bottleneck, Free-Space Optics (FSO) is currently deemed as a key breakthrough ...
Manuel M. Freitas +4 more
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Array signal processing robust to pointing errors [PDF]
, 2011 The objective of this thesis is to design computationally efficient DOA (direction-of- arrival) estimation algorithms and beamformers robust to pointing errors, by harnessing the antenna geometrical information and received signals.
Zhuang, Jie
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Performance of UAV-to-Ground FSO Communications with APD and Pointing Errors
Applied System Innovation, 2021 Recently, a combination of unmanned aerial vehicles (UAVs) and free-space optics (FSO) has been investigated as a potential method for high data-rate front-haul communication links.
Ha Duyen Trung
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Effects of Pointing Errors on Intensity Losses in the Optical LEO Uplink
, 2022 Different pointing errors from different sources cause an angular deviation in the uplink beam transmitted from an optical ground station (OGS) to a satellite.
Knopp, Marcus Thomas +4 more
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Measuring Antenna Elevation Mechanism Pointing Errors with Multiencoder Information Sources
Advances in Astronomy, 2023 There are many factors that cause pointing errors in radio telescopes. As one of the motion positioning mechanisms of the radio telescope, the error caused by the elevation mechanism cannot be ignored. The source of error in the elevation mechanism comes
Duoxiang Xu, Qian Xu, Na Wang, Fei Xue
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Terahertz Communications Between Unstable Transceivers With Pointing Errors Over FTR Fading
IEEE Open Journal of the Communications Society, 2023 Terahertz (THz) wireless communication has emerged as a promising technology for high-speed, ultra-broadband, and low-latency data transmission. However, the performance of THz systems is significantly affected by various channel and system parameters ...
Anil Yadav, Ranjan K. Mallik
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