Research On The Data Processing Method Of Wave Buoy

With the improvement of the comprehensive strength of China’s economic, marine monitoring is put forward higher requirements. Wave buoy is a small, unmanned, automatic measurement system, a common marine monitoring equipment.It is widely used in many marine monitoring stations. The system can measure the hydrological factors fixedly, regularly, continuously, accurately, such as wave height, wave period and wave direction of propagation and so on.Firstly, based on the development process of domestic and international wave buoy, this paper pointed out the shortcomings of domestic wave buoy and analysed the unworthiness of foreign wave buoys.This paper presented a complete set of wave buoy system and the wave buoy data processing method, introduced the general design of the wave buoy specifically the design proposal of acquisition system, including the microprocessor module, GPS module, the acceleration sensor module and electronic compass module.Then the paper introduceed the random process model of the wave and the statistical methods of wave parameters such as wave height,wave period and so on. The paper focused on wave measurement principle based on accelerometer sensor and based on GPS sensor, compared two methods of similarities and differences.And the paper proposed the information fusion algorithm for two sensors based on Kalman filter, which improved the accuracy of wave surface sequence system collected effectively.Finally, this paper introduced estimation method of wave power spectrum and wave directional spectrum, then proposed the method of calculating for power spectrum, directional spectrum and wave direction for this wave buoy system based on characteristics of the sea area of China. The paper described the data processing software design of the wave buoy, particularly wave buoy data coordination processing systems. The simulation verified the effectiveness of the wave buoy system and the software.