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Article
Real-time GNSS tropospheric delay estimation with a novel global random walk processing noise model (GRM)
Accurate modeling of tropospheric delays is crucial for the global navigation satellite system (GNSS), which finds extensive applications in early warning systems of natural hazards and extreme weather forecas...
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Article
Real-time shipborne multi-GNSS atmospheric water vapor retrieval over the South China Sea
Atmospheric water vapor plays a prominent role in weather forecasting and climate change, which can be measured accurately with conventional water vapor observing techniques and the global navigation satellite...
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Article
TropNet: a deep spatiotemporal neural network for tropospheric delay modeling and forecasting
Water vapor plays an essential role in regulating the earth’s weather and climate, and the tropospheric delays caused by water vapor are one of the error sources in space geodetic techniques. Attributing to th...
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Article
A tropospheric delay model to integrate ERA5 and GNSS reference network for mountainous areas: application to precise point positioning
In this study, a tropospheric delay model that integrates tropospheric delays derived from the European Centre for Medium-Range Weather Forecasts fifth-generation global atmospheric reanalysis and the Continuo...
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Article
Precipitable water vapor fusion of MODIS and ERA5 based on convolutional neural network
Sensing precipitable water vapor (PWV) in the earth’s atmosphere is of significant importance for contributing to severe weather event monitoring and forecasting. PWV can be measured and retrieved with various...
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Article
Open AccessMulti-GNSS products and services at iGMAS Wuhan Innovation Application Center: strategy and evaluation
Over the past years the International Global Navigation Satellite System (GNSS) Monitoring and Assessment System (iGMAS) Wuhan Innovation Application Center (IAC) dedicated to exploring the potential of multi-...
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Article
Rapid calibration of HY-2A satellite-borne microwave radiometer using coastal GNSS observations
Satellite-borne microwave radiometers provide wet tropospheric correction (WTC) for altimetry observations, which is critical to high-accuracy sea surface height (SSH) measurements. However, it was reported th...
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Chapter and Conference Paper
Ergodic Lower Bound and Optimal Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise in MIMO Wireless System
The transmission security problem is considered in this paper. A new artificial noise is added into transmitted signal to improve the secrecy performance of the system. A expression for the ergodic lower bound...
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Chapter and Conference Paper
Generalized Simplified Successive-Cancellation Decoding of Multi-kernel Polar Codes
Multi-Kernel (MK) offers more flexibility code length selections for polar codes compared to size-2 kernel proposed by Arikan. In this paper, a generalized Simplified Successive-Cancellation List (SSCL) decodi...
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Article
Open AccessEvaluation of deep learning-based approaches for COVID-19 classification based on chest X-ray images
The COVID-19, novel coronavirus or SARS-Cov-2, has claimed hundreds of thousands of lives and affected millions of people all around the world with the number of deaths and infections growing exponentially. De...
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Chapter and Conference Paper
Homomorphic Encryption Based Privacy Preservation Scheme for DBSCAN Clustering
In order to reduce the risk of privacy leakage during data outsourcing clustering operations, this paper proposed a privacy-preserving scheme for DBSCAN clustering learning based on homomorphic encryption, whi...
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Chapter and Conference Paper
Attacks Detection Method Based on Free Space Quantum Secure Direct Communication
Quantum secure direct communication is a new communication mode in the free space. Quantum secure direct communication utilizes single photon with the information to transmit ciphertext in the quantum channel ...
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Article
Control Code Multiple Encryption Algorithm on Satellite-to-ground Communication
The transmission security between ground station and satellite is challenging. Some existing multistep algorithms leave lots of loopholes for eavesdrop** and attacking in satellite-to-ground communication. F...
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Article
Evaluation of HY-2A satellite-borne water vapor radiometer with shipborne GPS and GLONASS observations over the Indian Ocean
The Chinese Haiyang-2A (HY-2A) altimetry satellite is equipped with a calibration microwave radiometer (CMR) for correcting atmospheric water vapor path delay in radar altimeter observations. To evaluate the s...
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Article
Open AccessA robust modulation classification method using convolutional neural networks
Automatic modulation classification (AMC) is a core technique in noncooperative communication systems. In particular, feature-based (FB) AMC algorithms have been widely studied. Current FB AMC methods are comm...
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Chapter and Conference Paper
A Study on the Application of EDA Technology in the Design of Virtual Digital Electronic Experiment
Along with the rapid development of computer technology and electronic technology, the traditional digital electronic technology for experiment teaching can hardly meet the development requirements of the time...
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Chapter and Conference Paper
A High-Performance Synchronous Energy-Saving Algorithm for Wireless Sensor Networks
Time synchronization technology is an important prerequisite for effective application of wireless sensor networks, and provides basic services for multiple application services. However, due to the complexity...
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Chapter and Conference Paper
Research on Digital Teaching Materials Under the Mode of “Educational Cloud Service + Cloud Terminal”
With the popularization and development of cloud computing technology and intelligent terminal, the “Educational Cloud Service + Cloud Terminal” (referred to as the “cloud + terminal” mode) mode, which is comp...
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Article
Novel Markov channel predictors for interference alignment in cognitive radio network
In cognitive radio (CR) network, how to mitigate interference between different users is a key task. Interference alignment (IA) is a promising technique to tackle the multi-user interference in communication ...
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Chapter and Conference Paper
One Division-Multiplexed of Control Code Based on Quantum Secure Direct Communication
As a subject of the quantum information science, Quantum Secure Direct Communication (QSDC) has been different from Quantum Key Distribution (QKD), QSDC makes the cryptograph to be transmitted directly in the ...
