Design And Implementation Of SAR/GMTI Moving Target Detection Software Platform

Synthetic aperture radar(SAR)can be imaged as a stationary target,and the ground moving target detection technology(GMTI)can detect the moving object in the scene echoes well,at the same time,their advantages and disadvantages are complementary,which is called SAR/GMTI mode.At present,Many countries in the world are striving to develop relevant SAR/GMTI moving target detection technology,trying to find a variety of efficient and practical detection methods for moving targets.However,the relevant software platform of SAR/GMTI moving target detection on the market is very little.So it is very important to design a software platform which can integrate the relevant algorithm of moving target detection to provide support for subsequent new algorithm.Based on the demand analysis and function division of the SAR/GMTI moving target detection software platform,this paper proposes a new MVADE software structure to design the framework.In the software platform based on MVADE design,the scenario simulation,dynamic object simulation,clutter suppression,target detection,and single band parameter estimation module are realized,and micro simulation,micro analysis,dynamic clutter simulation,and dual band parameter estimation module are integrated.The main research work of this paper is as follows:(1)Software platform structure design: through the demand analysis and function division,a software structure of MVADE which is according to the characteristics of the algorithm platform itself is designed,which can conduct UI,business logic,algorithm,and data four layers of loose decoupling.Based on the realization of the complex matrix class CmpMatrix and algorithm base class AlogthmBase which encapsulates the number of mathematical functions,it uses MVADE to design the software platform framework.(2)The moving target detection module design and implementation:the overall scheme of the module is determined,including the scene simulation based on the inverse RD algorithm,the dynamic target simulation based on time-domain simulation,the clutter suppression based on DPCA,and the target detection based on the Hof transform.And on this basis,the algorithm module was realized by analyzing the sequence diagram of the software platform.(3)Parameter estimation module design and implementation: the overall scheme of the module is determined,including the estimation of Doppler center frequency by using the method of clutter lock and the estimation of Doppler adjustable frequency by using the method of sub aperture correlation method.On this basis,the paper analyzes the time sequence diagram of the software platform,and uses the MATLAB algorithm interface provided by the software platform to integrate this algorithm module.