36 Result(s)
within
Tianhe **ao
Engineering
Communications Engineering, Networks
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Chapter and Conference Paper
Extraction of Soil Moisture Based GNSS-R Considering Vegetation Factors
One of the keys to retrieve soil moisture (SM) using the Spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) technique is to correct for the influence of vegetation. In this paper, the surface...
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Chapter and Conference Paper
Soil Moisture Inversion Based on Dual-Frequency Signal of QZSS GEO Satellite
In recent years, soil moisture retrieval using GNSS reflection signals has become a topic of great concern to scholars. However, most researchers adopt GPS and BDS signals to carry out the related research. Th...
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Chapter and Conference Paper
GNSS-5G-SINS Resilient Integrated Navigation Algorithm for Indoor and Outdoor Seamless Environment
At present, the accuracy and reliability of Global Navigation Satellite Systems (GNSS) in complex environments have not been able to meet the demands of seamless location services both indoors and outdoors. Th...
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Chapter and Conference Paper
UWB/INS Integrated Positioning Method Considering Time Latency and NLOS Errors
Ultra-wideband (UWB) positioning technology has currently become a research hotspot for local small-scale positioning and navigation due to its advantages of high accuracy and wide bandwidth. The UWB positioni...
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Chapter and Conference Paper
Analysis on the PPP Performance of Android Smart-Phone: A Case Study of Huawei P40 Pro
With the development of mass market, the demand for high-precision and high-stability navigation and positioning functions of Android smart phones is increasing. However, compared with the traditional receiver...
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Chapter and Conference Paper
An Improved Robust Interacting Multiple Model Algorithm for Underwater Acoustic Navigation
In
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Chapter and Conference Paper
Research on the Method of Precisely Removing Open Water in the Retrieval of Soil Moisture by Spaceborne GNSS-R
When using spaceborne GNSS-R data to retrieve soil moisture, whether open water such as rivers and lakes are accurately removed will have a significant impact on the results of soil moisture retrieval. In orde...
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Chapter and Conference Paper
Analysis of COSMIC-2 Atmospheric Boundary Layer Detection Ability
Using Global Navigation Satellite System (GNSS) radio occultation technology to detect atmospheric boundary layer height (ABLH) accurately has always been a difficult point in the field of satellite navigation...
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Chapter and Conference Paper
Tropospheric Delay Modeling Based on Multi-source Data Fusion and Machine Learning Algorithms
Machine learning algorithms have been widely applied in various fields, including the research of the tropospheric delay of Global Navigation Satellite System (GNSS) signal. In this paper, back-propagation neu...
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Chapter and Conference Paper
Coastal GNSS-R Code Delay Altimetry Using GPS L5 Signals
In recent years, with the gradual completion of different GNSS constellations, the available L-band navigation signals have become more abundant. Not only can they be used for PNT (Positioning, Navigation, and...
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Chapter and Conference Paper
Research on Sea Surface Height Measurement Based on GNSS-IR Dual Frequency Data Fusion
It is an important application of GNSS in marine remote sensing to measure sea level by using Global Navigation Satellite System Interferometry Reflectometry (GNSS-IR), which provides a new direction for globa...
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Chapter and Conference Paper
Sound Velocity Profile Prediction Method Based on RBF Neural Network
As a marine environmental parameter, sound velocity has an important impact on sound propagation in the ocean. In the same sea area, the sound velocity profile (SVP) changes dynamically due to the influence o...
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Chapter and Conference Paper
Multi-GNSS Kinematic Relative Positioning of Multiple Base Stations and Its Application in Deformation Monitoring
The traditional single base station GNSS deformation monitoring system is greatly influenced by the base station stability and data quality. In order to improve the accuracy and reliability of monitoring syste...
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Chapter and Conference Paper
Accuracy Assessment and Improvement of GNSS Precise Point Positioning Under Ionospheric Scintillation
We focus on the accuracy analysis and improvement of multi-GNSS precise point positioning (PPP) during ionospheric scintillation. By using the observation data from Hong Kong Satellite Positioning Reference St...
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Chapter and Conference Paper
Research on Acoustic Velocity Correction Algorithm in Underwater Acoustic Positioning
With the development of national marine strategic plan, the demand of underwater high-precision positioning is increasing greatly. Acoustic wave, as an information carrier, plays an important role in underwate...
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Chapter and Conference Paper
GPS-MR for Altai Snow Depth Monitoring
Snowfall as an important global freshwater resource, especially for **njiang Altai region in the snow all the year round, accurate and convenient snow thickness monitoring is particularly important, at present...
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Chapter and Conference Paper
The Long-Term Performance Analysis and Comparison of BDS on-Board Atomic Clock Based on Precise Clock Products of IGS Analysis Centers
As an important load of BDS, the performance of satellite-borne atomic clock directly affects the service level of navigation system. Based on the requirements of navigation system on atomic clocks in orbit, t...
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Article
An efficient cooperative hybrid routing protocol for hybrid wireless mesh networks
Hybrid wireless mesh networks are the most generic types of wireless mesh networks. Unlike static mesh routers, which have multiple radio interfaces and almost no energy constraint, mobile mesh clients are usu...
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Chapter and Conference Paper
Analysis of GPS for Monitoring Rain and Snow Weather
With the continuous improvement of the theory of the Ground-based GPS Meteorology and GPS-MR technology, and increases of the global GPS tracking station. Making the Ground-based GPS as a new kind of sensor in...
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Chapter and Conference Paper
The Identification of Satellite Clock Noise Based on LAG1 Autocorrelation of Overlap** Samples
Atomic clock is composed of various components of electronic devices, and its comprehensive effect of the internal and external environment makes it get easily affected by many kinds of noise. The random part ...
