Results 11 to 20 of about 1,624 (211)
Leida xuebao, 2018 Using azimuth beam steering, space-borne Synthetic Aperture Radar (SAR) can observe from multiple azimuth angle in single pass. During multiple azimuth angle observation, the satellite orbit is equivalent to long three-dimensional (3-D) curvilinear array,
Zhou Chaowei +3 more
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Event-by-event cumulants of azimuthal angles
The European Physical Journal C, 2022 AbstractWe further develop the recently proposed event-by-event cumulants of azimuthal angles. The role of reflection symmetry, permutation symmetry, frame independence, and relabeling of particle indices in the cumulant expansion is discussed in detail.
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Auto Sweptback Wing Based on Low Scattering Demand for an Unmanned Aerial Vehicle in Phase Flight
Aerospace, 2022 In order to study the optimal sweepback angle when a variant unmanned aerial vehicle (UAV) exhibits a low radar cross-section (RCS) indicator during phase flight, an auto sweep scheme based on electromagnetic scattering evaluation and an improved ...
Zeyang Zhou, Jun Huang
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Antenna azimuth diagnosis based on multi-layer perceptron model
Dianxin kexue, 2021 Antenna azimuth was seen as a key factor in the quality of mobile communications, and its accuracy will directly affect the quality of network optimization.An antenna azimuth diagnosis method was proposed based on multi-layer perceptron.The azimuth was ...
Xiangrong CHEN
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A Secondary Correction Algorithm of Azimuth for Mine Magnetoresistive Inclinometer
Meikuang Anquan, 2020 The azimuth measurement of mine magnetoresistive inclinometer is often inaccurate after interference with ferromagnetic materials, aiming at the problem, this paper proposes a secondary correction method of calculating the azimuth correction coefficient ...
LEI Xiaorong
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Estimation of Azimuth Angle Using an Ultrasonic Sensor for Automobile
Remote Sensing, 2023 A typical ultrasonic sensor has a major lobe that extends beyond 45 degrees. Because the wide beam of the ultrasonic sensor’s main lobe, which is used for straightforward distance measurement, has a low angular resolution, conventional methods such as incidence angle and linear angle measurements cannot accurately determine the azimuthal angle ...
Vasantha Kumar Chandrasegar, Jinhwan Koh
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Effects of Temporal Sampling Interval on the Moon-Based Earth Observation Geometry
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 The effects of temporal sampling interval on the moon-based earth observation geometry are analyzed in this study based on three observation angles, namely viewing zenith angle, solar zenith angle, and relative azimuth angle. According to the definitions
Hanlin Ye +3 more
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IEEE Access, 2021 For future ultrahigh resolution spaceborne synthetic aperture radar (SAR), it requires the antenna beam capable of large angle scanning in azimuth to increase the azimuth bandwidth and to improve the resolution consequently.
Fan Feng, Rongrong He, Wei Xu, Ailing Lv
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Effects of azimuthal angles on laser interference lithography
Applied Optics, 2014 This paper discusses the effects of azimuthal angles on two-, three-, and four-beam laser interference. In two- or three-beam laser interference, periodic surface structures of lines or dots were obtained. In four-beam laser interference with the polarization mode of TE-TM-TE-TM, the modulation in a particular direction was formed and calculated.
Zhang, Jinjin +4 more
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Modified Dynamic North-Finding Scheme With a Fiber Optic Gyroscope
IEEE Photonics Journal, 2018 With the development of laser and optical fiber, the north finding system (NFS) with fiber optic gyroscopes (FOGs) has become an active trend in inertial technology research.
Zhu Zhou +3 more
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