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Guo Jijie,Ren inifa,Li Yunwu. 1999. In-situ calibration of acoustic measurements of suspended sediment. Acta Oceanologica Sinica, (4):535－542
In-situ calibration of acoustic measurements of suspended sediment
In-situ calibration of acoustic measurements of suspended sediment
Received:July 24, 1998  Revised:January 10, 1999
DOI：
Key words:Suswted sedirnent  acoustic probing  in-situ calibration
中文关键词:  Suswted sedirnent  acoustic probing  in-situ calibration
基金项目:This project was supported by the National Natural Science Foundation of China under contract No. 49476273.
Author NameAffiliation
Guo Jijie Institute of Ocean Technology, State Oceanic Administratiod, Tianjin 300 ill, China 
Ren inifa Shangha caustics Labortory, Chinese Academy of thences, Shangha 200032, China 
Li Yunwu Institute of Ocean Technology, State Oceanic Administratiod, Tianjin 300 ill, China 
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Abstract:
      The key to the problem of probing the concentration of suspended sediment in water and its variation with eooustic equipment is how to calibrate the obtained data.Combining the acoustic backscatter intensity data with the real concentration of suspended sediment from water samples collected from the Changjiang Estuary,three in-situ calibration methods for ttansfomting measured sediment are induced.Results show that the discrepancies between calibrated values given by characteristic time calibration and real ones are less than the values given by single shot method,and the statistical error is 20% approximately.The calibration on characteristic times is practical and simpler than simultaneous calibration.
中文摘要:
      The key to the problem of probing the concentration of suspended sediment in water and its variation with eooustic equipment is how to calibrate the obtained data.Combining the acoustic backscatter intensity data with the real concentration of suspended sediment from water samples collected from the Changjiang Estuary,three in-situ calibration methods for ttansfomting measured sediment are induced.Results show that the discrepancies between calibrated values given by characteristic time calibration and real ones are less than the values given by single shot method,and the statistical error is 20% approximately.The calibration on characteristic times is practical and simpler than simultaneous calibration.
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