Ground Targets In Synthetic Aperture Radar Echo Simulation Technology

As a new radar technology, Synthetic Aperture Radar (SAR) technology has evolved to satisfy a variety of application for both civilian and military users. As long with the increasing and extensive application of SAR, many fields such as design of SAR system, evaluating of imaging algorithms, or suppression of noise and clutter ask for more demands and higher quality of SAR raw signal data, the technique of SAR raw signal simulation is being developed under this background.Radar target radar echo simulation technology is indispensable for technology research. If the target echo used in all field trials, it will spend a lot of manpower, material and financial resources, and it is vulnerable to weather effects and will extend the development cycle. Using modern simulation technology, microwave imaging technology and digital circuit technology.it has become an important part in the radar system design.With the increasingly widespread application of SAR, SAR echo simulation algorithm has great value for the validation of SAR imaging and characteristics of SAR image target recognition. SAR raw signal simulation algorithm research has changed into a multi-mode simulation algorithm typical ground targets from the initial simulation of a simple point target.This thesis is focusing on SAR echo simulation algorithm around the optimization and implementation. First introduces the working principle of SAR. SAR raw signal simulation of typical algorithms; and for the SAR's 2DFFT algorithm optimization, optimization methods are mainly graphical electromagnetic methods:the use of graphics to reduce electromagnetic target in the scattering coefficients to block part of the greatly reduces the computation to optimize the 2DFFT algorithm, this algorithm optimized the 2DFFT buildings were typical of the ground and simulated two typical targets on the ground to form the basic scenario simulation; followed by the 2DFFT algorithm with a kind of classical RTPC algorithm compared the two algorithms are the advantages and disadvantages and applicability; the final preparation using Labview software,2DFFT algorithm simulation waveforms downloaded to the hardware platform to complete the development of the SAR radar simulator.