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Displacement-based modal analysis has been proven to yield more robust and reliable modal parameter identification results compared to acceleration-based modal analysis. Global navigation satellite systems (GNSS) under real-time kinematic (RTK) ...

Current practices lack reliable models for continuously assessing compaction quality from limited data, which hinders effective compaction quality control and the acceptance of earthwork. Using material source parameters as inputs for assessment ...

Unmodeled errors materially affect the float solutions of both ambiguities and coordinates in global navigation satellite systems (GNSS), and thus also the fixed solution. Recently, extensive attempts have been made to guarantee the reliability of ...

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• Extracting pure kiwifruit canopy information improves SMC estimation effectively.
• The optimal band combination algorithm efficiently screens band and FVC variables.
• The ensemble learning model for estimating SMC at different root-...

Accurate and real-time monitoring of soil moisture content (SMC) is of utmost importance for effective field irrigation and maximizing crop water productivity. However, a comprehensive investigation into the inversion study for determining ...

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• Soil ridge height was used as an indicator for spatial distribution of wind erosion.
• Windbreak effects were visualized by comparing ridge height among distances.
• Sheltered area had greater ridge height than unsheltered areas after ...

Tree windbreaks have multifunctional benefits including wind damage reduction, soil erosion control, and biodiversity conservation. The removal and low adoption of tree windbreaks due to agricultural expansion are issues in many regions despite ...

• Developed a remote safety system for robot tractor to save labor and increase monitoring efficiency.
• Low-cost monocular cameras are used for obstacle detection and positioning.
• The Q-Q plot and t-test are proposed to improve the ...

Japanese agriculture faces serious problems caused by labor shortages due to both a decline in the agricultural population and the aging of the remaining agricultural population. Japanese government is actively promoting the use of agricultural ...

• Models were trained to use Sentinel-2 multispectral data to predict pasture nutrient concentration.
• Sentinel-2 had comparable prediction accuracy to a proximal hyperspectral sensor.
• Sensitive spectral regions varied between the ...

Using remote sensing to estimate the nutritive characteristics of pasture in livestock systems is a rapidly developing area that has the potential to improve pasture management and utilisation and in turn improve livestock productivity. The ...

In China, most provinces have established mature Continuous Operational Reference Systems (CORS) base stations, and enterprises such as Qianxun Spatial Intelligence Inc., (hereafter called Qianxun), China Mobile, and Six Points Technology have all ...

• We present an algorithm to optimize electric agricultural robots' work schedules.

We developed an optimal work-scheduling algorithm for autonomous spraying electric robots in orchards. Orchards are often located in mountainous areas, where the slopes are greater than those in plain areas. The work efficiency of ...

The centimeter-level positioning accuracy of real-time kinematic (RTK) depends on correctly resolving integer carrier-phase ambiguities. To improve the success rate of ambiguity resolution and obtain reliable positioning results, an enhanced ...

In uncombined long-range real-time kinematic positioning, the ionospheric delays are usually parameterized as a random-walk process, and its power spectral density (PSD) is a decisive parameter affecting the positioning performance. Since the ...

The integrated navigation system is the inertial navigation system (INS), corrected by global navigation satellite system (GNSS) data. The correction could be done algorithmically by utilizing nonlinear Kalman filtering (NKF). In practice, the NKF ...

Discontinuity extraction and interpretation of fractured masses is of high importance when analyzing rock slope stability. Regarding high-steep slopes, which are areas that are difficult to reach, traditional methods to obtain ...

• A complete practical solution is proposed for discontinuity interpretation and rockfall identification from filed investigation to indoor analysis.

Usually, it is difficult to implement integer ambiguity resolution within a short amount of time for GNSS positioning in urban areas due to the contamination of non-line-of-sight signals and multipath. This study proposes a sequential ambiguity ...

RTK KIT regulates a variety of crucial cellular processes via its cytoplasmic (CD) domain composed of the tyrosine kinase domain crowned by highly flexible domains - juxtamembrane region, kinase insert domain and C-tail, key recruitment regions ...

• Path optimization in headland turning sequence for autonomous land levelling operation.

To improve the efficiency of the land levelling operation of a tractor-scraper system controlled by an autonomous guidance system which depends on the complete earthwork transportation and minimum navigation cost, it is crucial to ...

• The Covermap simulation tool is used for autoguidance of farming vehicles.
• ...

Real Time Kinematic (RTK) systems, together with Global Navigation Satellite System (GNSS) networks, are real-time location systems that are widely used in precision agriculture for autoguidance systems in farm vehicles. The RTK uses a ...

The use of the GLONASS legacy signals for real-time kinematic positioning is considered. Due to the FDMA multiplexing scheme, the conventional CDMA observation model has to be modified to restore the integer estimability of the ambiguities. This ...

Satellite navigation is a method to determine the position (longitude, latitude and altitude) and time of a point on the earth by using the global space positioning satellite system, accurately. This paper reports on localization system structure, high ...

The BDS-3 preliminary system was declared functional on December 27, 2018. It enables positioning service on a global scale. This study conducts a comprehensive investigation of the BDS-3 global service from the perspective of positioning, ...