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Information × Registration Number 0225U002269, (0124U001015) , R & D reports Title Radio engineering systems theory of phantom radio imaging for aerospace-based radars popup.stage_title Основи теорії радіотехнічних систем, які підмінюють/доповнюють за завчасно заданими сценаріями радіозображення системам дистанційного зондування Землі з аерокосмічних носіїв Head Pavlikov Volodymyr V., Registration Date 27-02-2025 Organization National Aerospace University "Kharkiv Aviation Institute" popup.description1 Development of a new theory of phantomization (adding phantom fragments to the image) radio images, generated by remote sensing radars from aerospace carriers. Recommendations development for the corresponding radio systems design. popup.description2 The stage is devoted to developing the base of the theory of fake element formation in images of aerospace radar systems by adding the informational features of objects absent on the surface irradiated from the aerospace carrier to the spatiotemporal trajectory signals of SAR. Obtained results: 1. The problem geometry of SAR–PhR interaction was defined, it allowed us to evaluate the interaction time between the radars and to derive analytically the main dependencies between the sensing signal information parameters, as well as the distance change at any SAR position in orbit. 2. The impact of the proposed system’s mutual position on the expected form of the SAR sensing signal and the area size where it’s possible to solve the radio image phantomization problem considering different imaging modes is investigated. 3. Calculation examples of these parameters are given and some hypotheses that formed the core of the hypotheses on which the radio image phantomization theory will base are confirmed. Conclusions. The first stage created the basic principles of the radio image phantomization theory built with the help of SAR. The obtained results establish the dependence between the phantomization geometry and the potential and real time of systems’ interaction (affects the onboard and ground radars interaction session scheduling), the envelope of the received radio pulse packet (pulse repetition frequency in the packet, the pulses number in the packet, the pulse packets number involved in the one pixel formation of the radio image, etc.), the number of range separation lines, the area size where objects can be added in, are important for further research in this field. The next stage will contain the research results on solving the problems of optimizing separate phantom radar units and determining the conditions for planning the processes of injecting objects with a given complex scattering coefficient into the transmitter signal and the SAR radio image. Product Description popup.authors Vernadska Krystyna S. Volosiuk Valerii K. Derhachov Kostiantyn Yu. Kolesnikov Denys V. Pohudin Andrii V. popup.nrat_date 2025-02-27 Close