一种玉米穗水分分布的微波近场成像方法、装置及介质

By using microwave near-field imaging, multi-frequency microwave signals and multi-polarization technology, the geometric contour and dielectric constant distribution of corn ears are inverted, solving the problems of low resolution and difficulty in layering in traditional methods for corn ear moisture detection, and realizing non-destructive and high-precision detection of moisture inside corn ears.

CN122409708APending Publication Date: 2026-07-17CHINA AGRI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA AGRI UNIV
Filing Date
2026-06-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing detection methods cannot obtain the moisture distribution inside corn ears in a non-destructive, layered, and accurate manner. Traditional far-field microwave imaging methods are limited by the Rayleigh diffraction limit, resulting in low resolution, severe multipath effects, and large computational load for inversion.

Method used

By employing a microwave near-field imaging method, which utilizes multi-frequency microwave signals to receive evanescent wave components, and combining multi-polarization technology with nonlinear optimization algorithms, the geometric contour and dielectric constant distribution of corn ears are inverted to achieve layered imaging.

Benefits of technology

It achieves non-destructive, layered, and high-precision detection of moisture inside corn ears, breaking through the diffraction limit and improving spatial resolution and imaging accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122409708A_ABST
    Figure CN122409708A_ABST
Patent Text Reader

Abstract

本申请提供一种玉米穗水分分布的微波近场成像方法、装置及介质,能够解决相关技术中无法无损、分层、精准获取玉米穗内部水分分布的问题。该方法包括:在近场区域内,向玉米穗发射多频微波信号,以接收包含倏逝波分量的散射信号;对所述散射信号进行处理,获取反映玉米穗电磁特性的纯净散射参数;利用所述纯净散射参数,反演得到所述玉米穗内部的介电常数分布初步结果;利用不同极化方向的微波信号对所述介电常数分布初步结果进行处理,以提取对应极化方向的所述玉米穗的分层成像特征;融合不同极化方向的所述玉米穗的分层成像特征,以获取能区分苞叶层、籽粒层和穗轴层的最终介电常数分布;将所述最终介电常数分布映射为玉米穗的水分空间分布。
Need to check novelty before this filing date? Find Prior Art