An accurate ISF-based analysis and simulation method for phase noise in LC/Ring oscillators

Jin, Zhu Ji; Li, Dongsheng; Hu, Ang; Shan, Xiaoyu; Zhang, Chengcheng; Su, Yanwen; Zou, Xuecheng; Zhao, Xu

doi:10.1016/j.mejo.2021.105240

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…By analyzing the phase noise, we can determine the locations where environmental factors affect the system. The error analysis section is used to evaluate the measurement errors and stability of the system, conducting an analysis of both the linear and nonlinear effects on the system measurement errors [36]. Factors such as signal attenuation, noise, multipath effects, and others are considered in their impact on the positioning performance.…”

Section: Emergency Call Simulation Platformmentioning

confidence: 99%

Using Case and Error Analysis on Inspection Methods of Modeling Platforms for Automatic Emergency Call Systems Based on Generated Satellite Signals

Fu,

Ni,

Yang

et al. 2023

Vehicles

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The positional deviation of the in-vehicle Automatic Emergency Call System (AECS) under collision conditions brings difficulties for Intelligent Connected Vehicles (ICVs) post rescue operations. Currently, there is a lack of analysis on system operating conditions during collisions in the reliability assessment methods for the Global Navigation Satellite System (GNSS) deployed in the AECS. Therefore, this paper establishes an in-vehicle collision environment simulation model for emergency calls to explore the influence of parameters such as temperature and vibration on Signal-Based In-Vehicle Emergency Call Systems. We also propose environmental limits applicable to comprehensive tests, which can objectively evaluate reliability and provide data support for the AECS bench test through a satellite-signal-based semi-physical simulation, which is subjected to a bench test under different operating conditions. The findings of this study demonstrate that the occurrence of random vibration and impact stress, induced by vibration, exerts considerable disruptive effects on positional signal data during collisions. Consequently, it leads to substantial interference with the accurate detection of post-collision satellite positioning information. When the simulation operates under a 2.4 gRMS vibration condition, the maximum phase noise error in the positioning system is 8.95%, which does not meet the test accuracy requirements. On the other hand, the semi-simulation system is less affected by temperature changes, and at the maximum allowable temperature difference of the equipment, the maximum phase noise error in the simulated signal is 2.12%. Therefore, based on the influence of phase noise variation on the accuracy of the satellite signal simulation, necessary environmental conditions for the test are obtained, including a temperature that is consistent with the maximum operating temperature of the vector generator and a vibration power spectral density (PSD) lower than 1.2 gRMS.

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Section: Emergency Call Simulation Platformmentioning

confidence: 99%

Using Case and Error Analysis on Inspection Methods of Modeling Platforms for Automatic Emergency Call Systems Based on Generated Satellite Signals

Fu,

Ni,

Yang

et al. 2023

Vehicles

View full text Add to dashboard Cite

show abstract

“…The physical hardware provides the actual signal generator, ensuring that the generated signals match those in the real environment to guarantee signal accuracy and reliability. The error analysis section is used to evaluate the measurement errors and stability of the system, conducting an analysis of both linear and nonlinear effects on system measurement errors [36]. Factors such as signal attenuation, noise, multipath effects, and others are considered in their impact on positioning performance.…”

Section: Emergency Call Simulation Platformmentioning

confidence: 99%

Use Case and Error Analysis of Inspection Methods of Modeling Platform for AECS Based on Generated Satellite Signals

Fu¹,

Fang²,

Ni³

et al. 2023

Preprint

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The positional deviation of the Automatic Emergency Call System (AECS) under collision conditions brings difficulties for post-rescue operations. Currently, there is a lack of analysis on the system operating conditions during collisions in the reliability assessment methods for the Global Navigation Satellite System (GNSS) deployed in AECS. Therefore, this paper establishes an in-vehicle collision environment simulation model for emergency calls to explore the influence of parameters such as temperature and vibration on the data deviation of the simulated GNSS system. We also propose environmental limits applicable to comprehensive AECS tests, which can objec-tively evaluate the reliability of AECS and provide data support for AECS bench test. Through the satellite signal-based semi-physical simulation, AECS is subjected to bench test under different operating conditions. The findings of this study demonstrate that the occurrence of random vibra-tion and impact stress, induced by vibration, exerts considerable disruptive effects on positional signal data during collisions. Consequently, it leads to substantial interference with the accurate detection of post-collision satellite positioning information. When the simulation operates under a 2.4gRMS vibration condition, the maximum phase noise error in the positioning system is 8.95%, which does not meet the AECS test accuracy requirements. On the other hand, the semi-simulation system is less affected by temperature changes, and at the maximum allowable temperature dif-ference of the equipment, the maximum phase noise error in the simulated signal is 2.12%. Therefore, based on the influence of phase noise variation on the accuracy of satellite signal simulation, nec-essary environmental conditions for AECS test are obtained, including the temperature consistent with the maximum operating temperature of the vector generator and the vibration Power Spectral Density (PSD) lower than 1.2gRMS.

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A 4 GHz FLL-less fast-locking sampling PLL with gain-boosted sampling phase-frequency detector in 28 nm CMOS

Yang

Wang

Liu

et al. 2023

Microelectronics Journal

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An accurate ISF-based analysis and simulation method for phase noise in LC/Ring oscillators

Cited by 3 publications

References 12 publications

Using Case and Error Analysis on Inspection Methods of Modeling Platforms for Automatic Emergency Call Systems Based on Generated Satellite Signals

Using Case and Error Analysis on Inspection Methods of Modeling Platforms for Automatic Emergency Call Systems Based on Generated Satellite Signals

Use Case and Error Analysis of Inspection Methods of Modeling Platform for AECS Based on Generated Satellite Signals

A 4 GHz FLL-less fast-locking sampling PLL with gain-boosted sampling phase-frequency detector in 28 nm CMOS

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