2 results about "Ellipsoidal particle" patented technology

This application relates to the field of bistatic polarimetric radar technology, and particularly to a simulation method and system for bistatic fully polarimetric radar ellipsoidal particle target imaging based on electromagnetic properties. The method includes: setting radar parameters and ellipsoidal particle target parameters; calculating the far-field scattering coefficients of the ellipsoidal particles at different frequencies and target rotation angles under different polarization channels based on the radar parameters and ellipsoidal particle target parameters and utilizing the electromagnetic scattering characteristics of the ellipsoidal particles; simulating the received echoes of the corresponding bistatic fully polarimetric radar system based on the far-field scattering coefficients under different polarization channels, and extracting the scattering coefficients of noisy targets from the received echoes; and performing imaging processing on the scattering coefficients of each noisy target based on the bistatic inverse synthetic aperture radar (ISAR) turntable imaging principle to obtain a bistatic fully polarimetric radar image of the ellipsoidal particle target. This application simplifies the simulation process, fully considers the actual noise impact, and improves imaging efficiency.

The application belongs to the technical field of gas-solid two-phase flow experiment, and particularly relates to a collision experiment method considering the orientation angle of ellipsoidal particles. The collision experiment method considering the orientation angle of ellipsoidal particles comprises a high-pressure air compressor, a pressure gauge, a control valve, a gas conveying pipe, a nozzle support frame, a nozzle, an orientation angle control system, a test piece, an adjustable angle frame, ellipsoidal particles, a detachable particle positioner, a telescopic fence, a positioning groove, a lifting handle, a fixed-angle arc surface and a positioner plane, and constitutes an ellipsoidal particle-test piece collision experiment system, so that collision experiment research on ellipsoidal particles with different orientation angles and test pieces can be realized. The orientation angle control system comprises the detachable particle positioner, the telescopic fence, the positioning groove, the lifting handle, the fixed-angle arc surface and the positioner plane, so that the orientation angle can be controlled. The application provides a collision experiment method considering the orientation angle of ellipsoidal particles, and has the advantages of controllable variable speed of ellipsoidal particles and controllable adjustment of the orientation angle.