The Modeling And Simulation Of Homing System

With the development of the computer technology, the application of simulation in the scientific research can not only save a large amount of outlay, but also shorten the research period. The research of homing simulation system is an important area. It is an efficient tool of investigating the performance, theory and method of homing system. It is also a good way to improve the tactics index of homing system technique. The study of simulation modeling and simulation system of homing system, which includes building the mathematical model and simulation model of the system, developing simulation software and conducting system simulation experiments. Based on the previous research of our research group, some new development is achieved and more valuable research conclusions are drawn. The main research advances can be summarized as follows.1. Investigate the performance and method of homing system signal processing comprehensively, and found the corresponding mathematical modelsFirst, the holistic performance and operation process are thoroughly investigated. The function blocks are partitioned and the information flow connection is established. Especially, mathematical models of signal and noise, the principles and methods of signal processing in the time domain, frequency domain and the space domain (beam-former), the target detection and signal parameter estimation are emphasized. Then, the mathematical models of all the function blocks are founded.2. Found the simulation model of all the function blocksThe homing system can be simulated by the computer only if the mathematical models are turned into simulation models. The simulation modeling of every function block is studied in the paper. Taking A244 torpedo as an example, the simulation models such as transmitting signal, target echo signal, target radiating noise, background noise, ocean reverberation, array signal, conditioner filter, beam-form output, time processor output and signal parameters estimation of A244 torpedo are established.3. Study and analysis of homing simulation systemFirst, the system structure, blocks composing and the information exchange relationship of every function blocks are studied and founded. Then, the real-time performance of homing simulation system is analyzed by taking the example of A244 Torpedo. And the means of settlement such as depressed sampling and BittWare Hammerhead PCI accelerate board are presented, too.4. Programm the simulation software of homing system by using VC++ and Matcom according to the simulation modelsWith the programming of modularizing hierarchy design, a piece of software of complete homing system is built. All the function blocks of homing system are realized by simulation method, which can make up of all kinds of homing system. The software is developed by using Microsoft Visual C++, Matlab, Matcom and Olechart with the standard interface of Windows style. So it is an effective tool of developing new methods for homing system and evaluating the performance.5. Simulation experimentsThe simulation results of main function blocks are presented. And the study and analysis of the simulation results show that the mathematical models, simulation models and simulation software system adopted and founded in the paper are more accurate and efficient.