Acoustic Wave Measurement Technology Research

Wave is one of the most common phenomenon in sea, wave theory is one of themost important in the physical ocean science research field, the atmospheric wavesand sea exchange, the carbon cycle and so on a series of scientific research project ofthe intimate relationship; Waves is designed and built the most important dynamicfactors in ocean engineering. Long-term, continuous wave observation has providedvaluable data for these disaster early warning, about the long-term observation data ofthe wave decrease caused by Marine disasters like typhoon, the sea is critical to theeconomic loss; Wave monitoring and eigenvalue calculation results not only help tostudy the formation and growth of wave pattern, also help to the study of the internalstructure and external characteristics of the waves. These data to the study of solutionto the harbor and waterway siltation, the design of the port and ocean engineeringsuch as construction of offshore oil platform provides the necessary raw data anddynamic parameters.Paper firstly introduces, wave monitoring of various methods and thecorresponding principle, and analyzes their respective advantages and disadvantages,the development trend of wave observation instruments were analyzed. Introduces acable-type wave, the wave after the system composition, as well as the variouscomponents of the composition and design principle, device selection and some of thehardware circuit. In order to solve the acoustic wave recorder in the big waves, theCW pulse echo signal energy is weak, echo detection error is less than or dataproblems, in order to solve the problem, the linear frequency modulation signalcorrelation technique is applied to the wave instrument, redesign wave instrumentcollection system and data processing method, the low consumption of system design.Thesis mainly finished the following several aspects work:1, analyze the subject specification, as well as the requirement of design index,write the overall design, completed the on-duty circuit, collector and controllerhardware circuit design, software design and the external mechanical structure design.2, according to the special requirements of system low power consumption,USES a variety of means to reduce the power consumption of the system, has reachedthe requirement of design.3, according to the requirement of the working depth, this paper gives the designof the high power transmitter, and designed the automatic gain amplifier, increase thedetection probability of echo signal.4, completed laboratory flume test experiment, and analyses the test dataprocessing。...