Title Application Research on Environmental Monitoring by Microwave Radar in Taipei Port Area (2/4)-Optimization of Microwave Radar Marine Observation Technology.
Dept Transportation Technology Research Center
Year 2024
Month 3
Price 200
Summary     Microwave radar is an application of remote sensing technology. Unlike other observation methods such as bottom-mounted wave gauges or buoys, which collect single-point observational data, microwave radar can obtain observational data for the entire plane of a wave field. It possesses several advantages not found in traditional instruments. To enhance the marine meteorological observation operations in the Port of Taipei, our institute initiated relevant research activities since the year 2021. This project is a multi-year research plan, and in the first year, the focus is on analyzing the wave observation characteristics of microwave radar. The research results indicate that the radar's measurement of wave height is more reliable during certain time periods, but at higher wave heights, the radar may not accurately reflect the results. It performs better in observing indicative wave heights between 1 to 2 meters. However, the correlation between the peak period, flow velocity, and flow direction measurements shows a lower level of consistency.
    Currently, interference from the extension of the North Breakwater, structures within the harbor, and observation piles affects the radar echoes. This interference results in the superimposition of echo signals, interference, and masking signals in the region, significantly affecting the accuracy of marine parameter calculations. When selecting appropriate observation locations for setting up microwave radar in the future, it is recommended to choose areas with less interference, such as the North Breakwater segment or the coastal zone in the southeast of the Port of Taipei.
    Furthermore, the continuous expansion of the Taipei Port area has led to poor data quality. The linear relationship between the radar echo signal-to-noise ratio (SNR) and observed wave height requires the establishment of a relationship between radar echo data and wind speed and rainfall. It is suggested to consider different levels of data processing. For example, it is necessary to consider climate factors (such as wind speed, rainfall) or non-climate factors (such as sudden waves) to improve the accuracy of wave height observations.
Post date 2024/03/28
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