The invention discloses a crop disaster assessment method based on unmanned aerial vehicle synthetic aperture radar remote sensing, and particularly relates to the technical field of agricultural remote sensing, and the method comprises the steps: employing an unmanned aerial vehicle to carry a plurality of synthetic aperture radar systems in different wavebands and in a complete polarization working mode, acquiring original radar remote sensing data before and after a target crop in the target area is affected by a disaster; the method comprises the following steps: preprocessing original radar data, and extracting saliency characteristics such as backscattering coefficients, polarization and polarization decomposition in different observation orientations; and outputting a disaster assessment result of the target crop by using the crop disaster monitoring model in combination with artificial priori knowledge. According to the invention, the unmanned aerial vehicle synthetic aperture radar is applied to monitoring and evaluation of crop disasters, so that multi-band, full-polarization and multi-azimuth radar remote sensing data with high timeliness and high temporal-spatial resolution can be acquired all day and all day under a farmland scale to reflect the growth condition of crops; therefore, refined intelligent assessment is carried out on the crop disaster situation.
本发明公开了一种基于无人机合成孔径雷达遥感的农作物灾害评估方法,具体涉及农业遥感技术领域,该方法包括:利用无人机搭载多个不同波段且均处于全极化工作模式下合成孔径雷达系统,采集目标区域内的目标农作物受灾前、后的原始雷达遥感数据;对原始雷达数据进行预处理后提取不同观测方位下的后向散射系数、极化和极化分解等显著性特征;结合人工先验知识,利用农作物灾害监测模型输出目标农作物的灾害评估结果。本发明通过将无人机合成孔径雷达应用于农作物灾害监测和评估,能够在农田尺度下全天候全天时采集高时效性、高时空分辨率的多波段、全极化、多方位的雷达遥感数据来反映农作物生长状况,从而对农作物受灾情况做出精细化智能评估。
Crop disaster assessment method based on unmanned aerial vehicle synthetic aperture radar remote sensing
一种基于无人机合成孔径雷达遥感的农作物灾害评估方法
2024-09-06
Patent
Electronic Resource
Chinese
IPC: | G01S RADIO DIRECTION-FINDING , Funkpeilung / B64U / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / G06V |
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