Airborne Radar Rcs Algorithm And Software Implementation

With the rapid development of microwave technology, more and more stealth and Anti-stealth technology are demanded. And it is becoming more and more important to analysis the electromagnetic characteristic of the objects which is bigger than the radio wavelength as well the fly environment. How to solve the scattering characteristic problems in numerical method is an important point in calculate of electromagnetic. This dissertation puts emphasis on the theory basis of the airborne radar, especially on the study of the efficient preconditions and iterate method effects on the problem's convergence and accurate. The main researches are as follows:Firstly,The integral equations are presented in the scattering problems. Based on the original theories and crucial technology of the method-moment methods, the concrete step and the particular tool of the scattering problems resolving are introduced. Secondly, the tools and means of the Moment method are developed based on the integral equations, especially the singularity and the nearly-singularity, the most complex parts, are studied in detail. On the consideration of keeping the accurate, the better iterative methods which can save the calculate time and memory are researched in the linear systems. The accurate of the program is accomplished since the solution of a perfect electric sphere with the analysis answer.In order to accelerate the speed of solving the problems, some methods and preconditions are taken in to solve the problems. At the same time, compared with the former solving methods, the later has a higher speed and accurate. With the geometry model tools, the complex real structures are simulated, then, get the model experience as a truth of the programs, and make more stabilization of the programs.Finally, the accurate of the integral equations is researched. The accurate analysis of the integral equations is important in the numerical methods, dealing with the complex object by the methods of the integral equations, especially deal with the edge and sophisticated objects, the electric integral equation and the magnetic integral equations must be in line. Some examples which get some accurate and convergence in the analysis shows the discrete integral operator is also an important aspect in the property of calculating except the property itself. After then, Visual Studio 2008 is used to develop the simulation programs and juxtaposed to FEKO which is a commercial program to test and verify the validity. The results indicate that the calculation result is accepted.