NSTL国家科技图书文献中心

1. Comparative Study of Microwave Relative Phase Measurement Methods NSTL国家科技图书文献中心

El-Aziz, Dina A. Abd | Attiya, Ahmed M.... - 《Mapan》 - 2025,40(1) - 253～272 - 共20页

摘要： (RF) microwave* phase measurement techniques have* | microwave relative phase measurement techniques based on | generated significant interest. Accurate phase measurement | . High-precision phase* measurement methods are crucial* | a dual-channel phase-shift measurement* system from*

关键词： Microwave phase measurement | Uncertainty | Device under Test | Phase Shifter

2. Single optical frequency comb-assisted AMCW LiDAR with high precision and fast response speed NSTL国家科技图书文献中心

Qianwen Sang | Lihan Wang ... - 《7th Optics Young Scientist Summit (OYSS 2024)》 - Optics Young Scientist Summit - 2025, - 135200N.1～135200N.5 - 共5页

摘要： reaches ±0.4 μm while the measurement* refresh rate* | An optical frequency comb-assisted amplitude | modulated continuous wave (AMCW) LiDAR, which features | high-precision and fast-speed ranging is proposed | . The AMCW signal with a large frequency aperture is

关键词： Laser ranging | Optical frequency comb | Absolute distance measurement | Phase ranging | Microwave photonics

3. A Low-Latency and High-Performance Microwave Photonic AOA and IFM System Based on Deep Learning and FPGA NSTL国家科技图书文献中心

Zhang, Longlong | Li, Yin ... - 《IEEE sensors journal》 - 2025,25(6) - 9934～9945 - 共12页

摘要： instantaneous frequency measurement* (IFM) are the important* | microwave photonics (MWPs) technology, DL, and features of | -processing of MWP signal measurement* applications. By* | The angle of arrival (AOA) estimation and | aspects of radar, communication, and electronic warfare

关键词： Microwave measurement | Microwave theory and techniques | Field programmable gate arrays | Phase measurement | Signal processing algorithms | Frequency measurement | Accuracy | Signal processing | Optical sensors | Acceleration system...

4. Scale reduction Transformer-based soft measurement of oil-water two-phase flow NSTL国家科技图书文献中心

Li, Mengyu | Chen, Hanqing ... - 《Measurement》 - 2025,241(Pt.2) - 115747.1～115747.9 - 共9页

摘要： measurement in high-water-content oil-water two-phase flow | , we independently develop a dual-helix microwave | sensor measurement* system. Using this system, we* | -phase* flow and collect time-series signals* | characterizing microwave* attenuation. Based on signal*

关键词： Oil-water two-phase flow | Soft measurement | Scale reduction | Transformer

5. Interferometric Fiber Microwave Signal Phase-stable Transmission System Based on Scattered Light Suppression NSTL国家科技图书文献中心

Yuhan Hu | Lizhe Liu ... - 《Tenth Symposium on Novel Optoelectronic Detection Technology and Applications,Part Three of Three Parts》 - Symposium on Novel Optoelectronic Detection Technology and Applications - 2025, - 1351168.1～1351168.5 - 共5页

摘要：The phase-stable transmission of microwave | , thereby causing the phase* of the microwave signal to* | signal, reducing the measurement precision of the phase | interferometric optical fiber microwave* signal phase-stable* | precision of phase* measurement.*

关键词： Microwave photonic | Fiber interferometer | Phase-stable transmission

6. A Parallel Multistepped-Impedance Transmission Line (PMSITL)-Based Microwave Measurement System for Characterizing Binary Aqueous Mixtures NSTL国家科技图书文献中心

Wu, Wen-Jing | Xie, Hao ... - 《IEEE sensors journal》 - 2025,25(4) - 6309～6319 - 共11页

摘要： line (PMSITL)-based microwave* measurement system for* | , the proposed microwave* measurement system exhibits* | measurement system is composed of a standard characteristic | coefficient phase* of standard characteristic impedance* | change rate of transmission coefficient phase* with*

关键词： Sensors | Impedance | Power transmission lines | Transmission line measurements | Oscillators | Resonators | Radio frequency | Microwave sensors | Permittivity | Demodulation...

7. A Microwave Sensing System Based on Reflective RF Oscillator and High-Sensitivity Coupled-Line Sensor for Extracting Permittivity of Liquid Samples NSTL国家科技图书文献中心

Chen, Guang | Wu, Wen-Jing ... - 《IEEE sensors journal》 - 2025,25(1) - 476～488 - 共13页

摘要： microwave components, including the power divider, phase | A microwave* sensing system based on a* | the maximum phase* variation of the reflection* | of phase* variation of the reflection coefficient is* | coefficient phase* and permittivity into the relation between*

关键词： Sensors | Microwave oscillators | Microwave circuits | Radio frequency | Sensitivity | Permittivity | Microwave integrated circuits | Microstrip | Phase shifters | Microwave sensors...

8. A dual-parameters microwave measurement approach for spruce moisture content NSTL国家科技图书文献中心

Yu, Yating | Sun, Cheng ... - 《Nondestructive Testing and Evaluation》 - 2025,40(3) - 867～885 - 共19页

摘要： introduces a novel dual-parameters microwave measurement | identify the most effective measurement* parameters* | between the amplitude and phase* of S21 and the MC in* | microwave techniques. Finally, considering the impact of | MC on both the amplitude and phase* of S21, we*

关键词： Moisture content measurement | Spruce | Excitation frequency | Lift-off | Microwave technique

9. Raman Thermometry for Temperature Assessment of Inorganic Transformations During Microwave Heating NSTL国家科技图书文献中心

Jamboretz, John | Birkel, Christina S. - 《Journal of Raman Spectroscopy》 - 2025,56(1) - 49～56 - 共8页

摘要： temperature measurement* under microwave conditions because* | Microwave heating is an intriguing method for | microwave radiation on different types of solids are | and identify intermediate species during microwave | microwave heating of a model system (titania) that

关键词： inorganic compounds | microwave heating | phase transformation | Raman thermometry | Titania

10. Cylindrical Cavity Resonating Sensor for Testing Moisture and Drug Content in Capsule Based on Machine Learning NSTL国家科技图书文献中心

Liu, Zhaohan | Han, Yunan ... - 《IEEE sensors journal》 - 2025,25(4) - 6290～6300 - 共11页

摘要： for the measurement* of moisture and drug content (DC* | frequency of 2.3 GHz. The proposed measurement* method* | the S-21 amplitude and phase* parameters analysis at* | single measurement. Furthermore, the classification | measurements reached 94%. This methodology offers a microwave

关键词： Sensors | Moisture | Drugs | Testing | Resonant frequency | Transmission line measurements | Microwave measurement | Machine learning | Fixtures | Moisture measurement...

摘要： (RF) microwave phase measurement techniques have | microwave relative phase measurement techniques based on | generated significant interest. Accurate phase measurement | . High-precision phase measurement methods are crucial | a dual-channel phase-shift measurement system from

关键词： Microwave phase measurement | Uncertainty | Device under Test | Phase Shifter

摘要： reaches ±0.4 μm while the measurement refresh rate | An optical frequency comb-assisted amplitude | modulated continuous wave (AMCW) LiDAR, which features | high-precision and fast-speed ranging is proposed | . The AMCW signal with a large frequency aperture is

关键词： Laser ranging | Optical frequency comb | Absolute distance measurement | Phase ranging | Microwave photonics

摘要： instantaneous frequency measurement (IFM) are the important | microwave photonics (MWPs) technology, DL, and features of | -processing of MWP signal measurement applications. By | The angle of arrival (AOA) estimation and | aspects of radar, communication, and electronic warfare

关键词： Microwave measurement | Microwave theory and techniques | Field programmable gate arrays | Phase measurement | Signal processing algorithms | Frequency measurement | Accuracy | Signal processing | Optical sensors | Acceleration system...

摘要： measurement in high-water-content oil-water two-phase flow | , we independently develop a dual-helix microwave | sensor measurement system. Using this system, we | -phase flow and collect time-series signals | characterizing microwave attenuation. Based on signal

关键词： Oil-water two-phase flow | Soft measurement | Scale reduction | Transformer

摘要：The phase-stable transmission of microwave | , thereby causing the phase of the microwave signal to | signal, reducing the measurement precision of the phase | interferometric optical fiber microwave signal phase-stable | precision of phase measurement.

关键词： Microwave photonic | Fiber interferometer | Phase-stable transmission

摘要： line (PMSITL)-based microwave measurement system for | , the proposed microwave measurement system exhibits | measurement system is composed of a standard characteristic | coefficient phase of standard characteristic impedance | change rate of transmission coefficient phase with