Voloschuk R. The optimization of bistatic SAR structures on basis of space-frequency information analyze of trajectory signals

Object of the research is bistatic SAR systems for aviation-space earth remote sensing. Aim of the dissertation is increasing of bistatic SAR work performance at the expense of optimization of mutual space geometry location and movement of transmitter and receiver relative to investigated region. Investigation methods are the theory of probability and mathematical statistics methods; the optimal space-time signal processing methods; the space-frequency method for analysis and synthesis of earth remote sensing systems; the method of computer statistical modeling of the data processing and optimization problems solution. Scientific novelty of the achieved results: 1) The optimal movement conditions of the bistatic SAR platforms which provide the best selection quality are determined and justified and the bistatic system transmitter and receiver trajectories which provide constant value of resolution are determined for the first time. 2) The modified synthetic aperture antenna method in common with bistatic system spatial configuration selection is used for the first time for increasing imaging quality of investigated surface. 3) The space-frequency method got further development with reference to influence of mutual geometry and transmitter and receiver motion trajectories on the system ambiguity function and resolution, and space-frequency geometry optimization problem of the bistatic system is justified for purpose of increase of the imaging quality. 4) The technology for determination of the boundary deviation parameters of trajectories of the bistatic system platforms which satisfy to an allowable level of the degradation of the phase function and ambiguity function is developed, and the structure of the trajectory instabilities compensation system for transmitter and receiver of the bistatic SAR is developed. Results application type - applied-research. The research results allow investigating selective properties depending on tracks and geometry of the transmitter and receiver of the bistatic SAR, optimizing bistatic SAR spatial configuration, determining transmitter and receiver moving conditions which provide the best objects selection level and tracks which provide constant resolution, developing the trajectory instabilities compensation method of the transmitter and receiver – which integrally may be use for increasing quality of radiolocation images and working effectiveness of the bistatic SAR.