Synthetic aperture radiometer antenna array configuration method with optimal image signal-to-noise ratio

Abstract

The invention discloses a synthetic aperture radiometer antenna array configuration method with an optimal image signal-to-noise ratio, comprising the following steps: building a target function basedon a sampling cavity position and redundant baseline distribution according to action relation of sparse configuration of a synthetic aperture radiometer antenna array on an inversed image signal-to-noise ratio; according to physical limit and performance constraint, building a constraint function of antenna array configuration; combining the target function with the constraint function, and building a problem model for synthetic aperture sparse antenna array optimization with the optimal image signal-to-noise ratio as a goal; and solving the problem model by utilizing an intelligent optimization algorithm, and obtaining optimal antenna array construction. The synthetic aperture radiometer antenna array optimization configuration method provided by the invention has the advantages that the obtained array configuration is better than typical array configuration in the same array element scale, the inversed image signal-to-noise ratio can be improved and target detection of follow-up image processing is facilitated.

Description

technical field [0001] The invention belongs to the technical field of microwave remote sensing and target detection, and more specifically relates to a method for arranging antenna arrays of synthetic aperture radiometers with an optimal image signal-to-noise ratio. Background technique [0002] The "aperture synthesis technology" derived from radio astronomy uses sparse small-aperture antenna arrays to realize the "synthesis" of large-aperture antennas, avoiding the difficulty of making real-aperture antennas with large physical apertures in the field of microwave remote sensing and target detection. This results in a higher spatial resolution. [0003] In order to obtain better imaging performance, sparse optimization of arrays usually targets spatial resolution or sensitivity. Spatial resolution is used to measure the ability of the synthetic aperture radiometer to distinguish adjacent targets, which is generally defined by the 3dB beamwidth of the synthetic pattern of ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a synthetic aperture radiometer antenna array arrangement method with an optimal image signal-to-noise ratio, thereby solving the problem of low signal-to-noise ratio of the inversion image in the prior art. Technical problems of object detection that are not conducive to subsequent image processing

Images