Results 1 to 10 of about 222,732 (294)
Modeling of the Marine atmosphere and its impact on Ka-band channels [PDF]
MATEC Web of Conferences, 2022 The sea atmosphere environment will affect the Ka frequency channel in TT&C. Firstly, this paper briefly introduces the Marine atmospheric environment. Attenuation models of water vapor solubility and rainfall intensity are established.
Liu Zheng, Sun Fu-an, Zhou Bin
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Research on the phase-frequency relationship of the field effect amplifier front-end of shipborne USB system [PDF]
MATEC Web of Conferences, 2022 Normally, most researches on phase calibration of shipborne USB system focus on the means of phase calibration. This article starts with the research on the channel of the system.
Sun Fuan, Liu Zheng, Liu Huifeng
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中国工程科学, 2023 Satellite navigation has all-weather, all-time, and low-cost advantages and has become the most widely used means of positioning, navigation, and timing (PNT) service since its inception.
Guo Shuren +6 more
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Performance analysis of the BDSBAS-B1C message in trial operation stage
Scientific Reports, 2023 BeiDou Satellite-based Augmentation System (BDSBAS) has come into the trial operation stage since July, 2020. To evaluate the characteristic of the augmentation message in BDSBAS-B1C signal, the effectiveness of the message content was firstly analyzed ...
Jie Xin +8 more
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International Journal of Digital Earth, 2022 The change detection (CD) of heterogeneous remote sensing images is an important but challenging task. The difficulty is to obtain the change information by directly comparing the different statistical characteristics of the images acquired by different ...
Decheng Wang +4 more
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Robust adaptive Kalman filter for strapdown inertial navigation system dynamic alignment
IET Radar, Sonar & Navigation, 2021 The measurement noise covariance R plays a vital role in the Kalman filter (KF) algorithm. Traditionally, a constant R is obtained by experience or experiments.
Bing Zhu +4 more
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Review of On-orbit State Estimation of Space Targets with Radar Imagery
Leida xuebao, 2021 Space target state estimation aims to obtain a target’s on-orbit attitude, structure, movement, and other parameters accurately. This process helps observers analyze the target action intention, check for potential fault threats, and predict the ...
Yejian ZHOU +3 more
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Principle and performance of BDSBAS and PPP-B2b of BDS-3
Satellite Navigation, 2022 Within the framework of differential augmentation, this paper introduces the basic technical framework and performance of the BeiDou Global Navigation Satellite System (BDS-3) Satellite-Based Augmentation System (BDSBAS), including orbit products ...
Yuanxi Yang +5 more
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Research of software time synchronization project on Kylin operating system
Dianzi Jishu Yingyong, 2018 The development of homemade computer system of measurement and controlling becomes quickly, but the research of software time on Kylin is still on an underway phase. This paper puts forward the software time project, and tests the performance.
Li Yonggang +4 more
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Radiation environment and effect detection based on global navigation constellation
Open Astronomy, 2023 Combining the anomalies and environmental monitoring data of the early stage Beidou satellites, the space radiation environment spatial/temporal distribution and space radiation effect risk characteristics are analyzed, and the dynamic characteristics of
Quan Lin +9 more
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