研究目的
To propose an alternative system for building radar images from aerospace carriers that provides imaging with high angular resolution of the viewing range from -15° to +15° from the nadir, overcoming the limitations of current radar imaging systems.
研究成果
The study presents a novel approach to radar imaging that overcomes the traditional limitations of viewing angles near the nadir. By combining active and passive radiolocation methods and implementing spectral aperture synthesis, the proposed system achieves high angular resolution in previously blind zones. Future research should focus on empirical validation of the system's models and characteristics.
研究不足
The quality of the restoration depends significantly on the number of receiving antennas and the geometry of their placement. The system requires a priori knowledge of the frequency-dependent characteristics of the propagation medium and underlying surfaces, which are yet to be fully developed and empirically validated.
1：Experimental Design and Method Selection:
The study combines methods of active and passive radiolocation, utilizing a signal processing algorithm that integrates probing UWB signals with aperture synthesis techniques.
2：Sample Selection and Data Sources:
The radar system is designed for aerospace carriers, focusing on the viewing range from -15° to +15° from the nadir.
3：List of Experimental Equipment and Materials:
The system includes transmitting and receiving antennas, a noise generator, power amplifier, and a special computer for computing parameters needed for signal processing.
4：Experimental Procedures and Operational Workflow:
The system processes UWB signals with a continuum spectrum to multi-band signal processing, implementing spectral aperture synthesis.
5：Data Analysis Methods:
The study uses statistical synthesis methods for signal processing, focusing on the correlation functions and decorrelation filters to extend the operating frequencies bandwidth.
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