Microwave photon correlated imaging system based on microwave far-field local optical reconstruction

Abstract

The invention relates to a microwave photon correlated imaging system based on microwave far-field local optical reconstruction, and belongs to the technical field of photoelectric imaging. In microwave radar correlated imaging, distribution of a random detection radiation field in a target area needs to be accurately known, and the distribution of the radiation field cannot be directly detected in real time. According to an existing microwave radar correlated imaging technology, random detection radiation field distribution is obtained mainly through calculation according to system configuration and emission signal parameters; due to the limitation of actual system implementation factors, signals actually transmitted by a transmitter have deviation relative to calculation of preset waveforms, the actual radiation field distribution calculation difficulty is large, stable and accurate imaging is not facilitated, and therefore great challenges exist in actual application of microwave radar correlated imaging. According to the method, microwave radar correlated imaging is realized on the basis of random detection radiation field distribution actually measured by local optical reconstruction, so that the problem of calculation and estimation deviation is fundamentally avoided.

Description

technical field [0001] The invention belongs to the technical field of photoelectric imaging, and relates to a microwave photon correlation imaging system based on microwave far-field local optical reconstruction. Background technique [0002] Microwave correlated imaging is a radar correlated imaging technology that does not rely on and is not limited to the relative motion of the target through the correlation processing of the radiation field of the space-time two-dimensional random detection signal and the sampling echo to achieve high-resolution imaging within the beam. Prospects. For related literature, please refer to: [0003] [1] Li Dongze, Research on Radar Correlation Imaging Technology, Doctoral Dissertation, National University of Defense Technology, 2014. [0004] [2] Xu Hao, Research on Radar Imaging Based on Spatial Spectrum Theory and Spatiotemporal Two-dimensional Random Radiation Field, Doctoral Dissertation, University of Science and Technology of China...

AI Technical Summary

Problems solved by technology

At present, the acquisition of the space-time two-dimensional random radiation field information in the far-field area is mainly based on the system configuration and the parameters of the transmitted signal through calculation and estimation. There are deviations in the preset waveforms, the calculation of the actual radiation field distribution is difficult and the accuracy is low, which is not conducive to stable and accurate imaging

In addition, it is difficult to obtain random radiation field information by means of measurement in the far-field target area in terms of actual engineering implementation, and the practicability is extremely low

Therefore, there are great challenges in the practical application of the technical means to obtain the time-space two-dimensional random radiation field information in the far-field area by calculation and actual far-field measurement.

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