Modeling, Simulation And Performance Evaluation Of Marine Surveillance Radar System

With the rapidly development of information technology,computer simulation can simulate detection environment and radar workflow.It has been paid an increasing attention for its advantages of low cost,fast speed,and high efficiency.Using a computer to realize the modeling and simulation of the maritime surveillance radar system,simulating the real environment,reproducing the situation of sea detection,and evaluating the performance of the simulation system,which can improve the system design efficiency and flexibility,shorten the development cycle,conduce to the verification of system performance and provides an important theoretical basis for the design and demonstration of radar systems.Maritime surveillance radar is the research object of this thesis,and the requirement of which is the starting point of this thesis.First,the maritime surveillance radar simulation system scheme is put forward,the idea of constructing simulation system with componentized thought is given,which means a simulation model library of maritime surveillance radar should be established firstly and then use the models from which to construction a simulation system.The structure of the model library is also designed.Second,the content of the model library is been elaborates,including the specific models,interfaces and principle of the functional class of the library,such as transmission signal model,radar environment model,receiver model,signal processing model,and data processing model,etc.Based on the principles of flexibility,reusability,and good encapsulation,the encapsulation structure of the models is designed,after which the radar simulation system model library is developed under the VS2005 platform.The simulation results are given in order to verify the function of the models.As a result of establishing simulation system under the VS2005 platform relying on programming knowledge,which is complicated and not intuitive,the simulation model library of maritime surveillance radar is designed and rebuild for the graphical modeling platform,improving the flexibility of simulation system.On the graphical modeling platform,users can drag and drop the selection model and connect the model interface in the form of attachment,making the process to establish a simulation system easier and more intuitive.Finally,the maritime surveillance radar simulation system is established based on the developed model library under both VS2005 and graphical modeling platform,then the simulation is realized.The simulation results including target points,tracks,main detection results(distance,speed,etc.)and waveforms are displayed on the display control platform,which is more intuitive and optimizes the user experience.As the purpose of the simulation,the results,the simulation results are analyzed to verify the correctness of the system modeling,and the performance evaluation of the built maritime surveillance radar simulation system is carried out.Based on the Monte Carlo experimental method,in the presence of a certain false alarm probability in the environment with and without interference,fit the discovery probability curve in order to evaluate the power range and anti-jamming efficiency under the certain interference background of the established radar simulation system.After accumulating an amount of detection and filtering results,combining with the set realistic target information,the accuracy of target detection,filtering and tracking in dimensions of radar in the distance dimension,velocity dimension and azimuth dimension is evaluated.The optimizing degree of signal-noise ratio through the pulse compression network is analyzed to evaluate the improvement factor of radar.A flexible and well-encapsulated simulation model library of maritime surveillance radar is developed in this thesis,and a maritime surveillance radar simulation system is established based on the graphical modeling software.The simulation is realized,and results of which are analyzed.The performance evaluation is carried out.The simulation system the advantages of easy to establish and modify,and friendly human-computer interaction and can be evaluated clearly.It has important positive significance for the development of the maritime surveillance radar system design,demonstration,and even the development of new technologies.