Recently, the research team of the Institute of Space Technology, Vietnam Academy of Science and Technology has successfully studied the application of satellite images VNREDSat-1 in collecting information about suspended matter in coastal waters of Vietnam.
This study helps provide information about the distribution of suspended matter for scientists, environmental resources state management agencies in monitoring trends and identifying areas at risk of coastal erosion, coastal estuary; propose appropriate protection solutions, contribute to prevention and mitigation of natural disasters, survey and survey of marine natural resources, especially in coastal areas of our country.
Researcher Dinh Ngoc Dat, Institute of Space Technology (Vietnam Academy of Science and Technology), Head of research team said, Algorithm development data was collected from the research topic of the Faculty State aerospace technology and research, scientific research projects of French partners in the regions: Red river mouth, Mekong river mouth and central coastal waters from Nha Trang city (Khanh Hoa) to Ninh Thuan.
Previously, the collection of suspended matter data in coastal waters of Vietnam was completely based on free data from countries around the world, with low accuracy and unreliable. It is estimated that the error from such free data can range from 30-218%; while the successful development of the image processing algorithm of the VNREDSat-1 satellite has provided our country’s scientists with data with only the highest error of 18%.
By mastering the technology and having its own satellite, Vietnam was able to collect data on its own, not by relying on the low-reliable, free data of other countries.
The parameters of suspended matter including inorganic and organic matter in water are general parameters of the water environment, helping scientists and managers to identify the marine environment, thereby giving an accurate assessment of marine environmental pollution, calculating estuarine erosion potential, factors affecting coastal accretion, making more accurate forecasts in the future.