The Study Of Adaptive Beam-forming Technology Based On The Vector-Sensor

The direction-of-arrival (DOA) estimation is one of the most important problems in the technology of the array signal processing. The traditional solution is to use the Beam-Forming Technology of signal received by the acoustic array. But the general Beam-Forming Technology has it's own limit is that when the length of the array is fixed it's differentiate is fixed. In order to get a more exact differentiate, we use the Adaptive Technology and Beam-Forming Technology contemporarily. Now the technology of vector array is becoming more and more important. The vector hydrophone, which can co-locating and simultaneously measures pressure (scalar field) and particle velocity(vector field) of acoustic field. No doubt, the more the information, the better the signal processing effect will be. So developing the technology of adaptive vector array based on technology of general adaptive acoustic pressure array will bring new life to the direction-of-arrival (DOA) estimation, which is the main content of the thesis.Firstly, the thesis sets forth the fundamentals of signal processing of pressure array and gives some of the arithmetics of spatial spectrum estimation. Then the thesis studies the technology of adaptive beam-forming of acoustic pressure array, In the same time ,the emulated result is given also. In succession to the introduce of the physical fundamentals of the combined signal processing with acoustic pressure and particle velocity, the thesis studies the adaptive beam-forming technology of the vector array , for the combination of acoustic pressure and particle velocity (P + Vc) * Vc , the emulated result says that the arithmetic mentioned in the thesis works well.Finally, In order to test the validity of the arithmetic, the thesis analyses the data of two trials in lake and sea.