Results 11 to 20 of about 1,317,456 (256)
GOES‐16/ABI Thermal Emissive Band Assessments Using GEO‐LEO‐GEO Double Difference [PDF]
Earth and Space Science, 2019 Geostationary satellite (GOES)‐16/Advanced Baseline Imager (ABI) and Himawari‐8/Advanced Himawari Imager (AHI) represent a significant improvement over the imagers on board previous GOES.
Tiejun Chang, Xiaoxiong Xiong
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Seeing Double: Machine Vision, Difference, and Repetition
communication +1, 2023 In thinking about human and machine vision in relation to doppelgangers, I turn to Francois Brunelle’s photographic project “I’m not a look-alike.” Here the artist captured people that were not related yet looked very similar.
Stefka Hristova
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Dizhen xuebao, 2021 分别运用双差定位法、结合波形互相关的双差定位法和结合波形互相关的双差层析成像法，对唐山地区2010年1月至2020年7月河北地震台网记录的4 874个地震事件进行重定位。结果表明：结合波形互相关的双差层析成像法的定位精度高于其它两种方法，地震走时均方根残差由初始的0.71降至0.27；重定位后的震中分布更加集中，线性分布更明显，优势分布方向为NE向，与该区域断层走向基本一致；重定位后震源深度主要集中在5—15 km，分布形态更接近于正态分布，结果更加合理。从重定位后的震中空间分布可见在唐山 ...
Lei Guo, Lina Sun, Yi Zhou, Ning Wang
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Detection of meteorological inconsistencies by GPS
Annals of Geophysics, 2003 GPS observations, distances from satellites to receivers and meteorological conditions in neutral atmosphere are known to obey a constraint, which provides a residual or in other words a quality index.
R. Santangelo +4 more
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INS-Aided Multi-Antenna GNSS Carrier Phase Double Difference Spoofing Detection
IEEE Access, 2023 The effective spoofing detection can prevent GNSS receiver from providing erroneous positioning, velocity and timing information. Most of the available multi-antennas carrier phase double difference-based spoofing detection methods, regardless of the ...
Xin Zhang +4 more
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Double/debiased machine learning for difference-in-differences models [PDF]
The Econometrics Journal, 2020 SummaryThis paper provides an orthogonal extension of the semiparametric difference-in-differences estimator proposed in earlier literature. The proposed estimator enjoys the so-called Neyman orthogonality (Chernozhukov et al., 2018), and thus it allows researchers to flexibly use a rich set of machine learning methods in the first-step estimation.
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L’architettura come sistema di differenze
Aisthesis, 2012 There are many cases in which the “direction” of architecture seems to be indifferent to the architect who designs it. Among these, the Guggenheim Museum in New York by Frank Lloyd Wright is highly emblematic: through the long and troubled project’s ...
Marco Biraghi
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Sensors, 2017 The carrier phase multipath effect is one of the most significant error sources in the precise positioning of BeiDou Navigation Satellite System (BDS).
Wujiao Dai, Qiang Shi, Changsheng Cai
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Microseismic Source Location Estimation Using Reverse Double-Difference Time Imaging
IEEE Access, 2021 To locate microseismic sources, the reverse double-difference time imaging method is proposed in this paper. The traditional time-reversal imaging method requires an accurate velocity model.
Qiang Feng +3 more
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Comparison of the Stochastic Models for Double-Differenced GPS Measurements [PDF]
ITB Journal of Engineering Science, 2004 Double-differenced GPS carrier phase measurements are commonly used in GPS precise positioning applications and processed with algorithms based on the least-squares (LS) principle. In order to apply the LS principle, one needs to define properly both the
Dudy Darmawan, Fumiaki Kimata
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