Research On The Three-dimensional End Track Measure Technology Based On The Vector Sensors

Passive ranging technology does not call for coorperate signal source on the target, and would improve naval shooting trial efficiency greatly. Traditional active torpedo trajectory tracking systems are restricted by such a fact as the demand of cooperative signal source on the target, so do not meet some late-model torpedo trial demand. Therefore, a locating and tracking system with high performance aiming at disoperative target underwater must be developed.In this thesis, based on the underwater moving targets three-dimensional(3D) passive positioning and tracking, focused on the objectives of the use of radiation and low frequency noise spectral lines of the multi-element passive positioning technology to measure underwater high-speed moving target 3D end track.The theory of the time-delay estimateion and the combined signal processing with acoustic pressure and particle velocity is the goal of the underwater targets 3D trajectory passive measurement method in the basic theory. This paper introduced a theory of time-delay estimation of the basic contents and methods, and discussed the time-delay estimation of CRLB. Expounded the acoustic pressure particle velocity joint treatment for the estimated target position of the theoretical foundation, introduced the Vector Sensor identifying the target position of three methods. Research showed that the average sound intensity with each other and with good spectral estimation of the anti-coherent interference capability, which is based on the measurement of two algorithms to a higher measuring accuracy.Making the above on the basis of the basic theory, the thesis set forth the elementary theory of Position measurement made purely passive positioning technology, interface multi-path location method and depth measurement based on vertical double-element technology, gave the relevant solution algorithm, and did under certain conditions of the simulation study. The final application of test data on Lake algorithm was verified. Test results showed that the algorithm put forward in the thesis can be realized and reliability.In the last part of the thesis, discussed the time reversal mirror (TRM) technology applied in the 3D trajectory underwater targets passive measurement, set forth the basic theory of passive acoustic pressure reverse mirror positioning, on this basis,deal with the experimental data on the lake,the experimental results and theoretical results were approximately accordant.