Aerospace technology supports agricultural insurance; Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD opens up the industrial chain for hyperspectral remote sensing satellite applications.

In the summer of 2023, Xi'an City, Shaanxi Province, experienced several days of rainy weather, causing wheat to mold, lodging, and sprout, resulting in losses for affected farmers. Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD, using the "Xiamen Science and Technology-1" hyperspectral remote sensing satellite in orbit, conducted remote sensing monitoring of wheat damage in specific areas, quickly acquiring spatial distribution and statistical information of the wheat, and generating a map of the wheat damage distribution in the experimental area.

Wheat planting monitoring results

This study utilizes the Xiamen Science and Technology-1 satellite, currently in orbit at Xi'an Zhongke Xiguang, to conduct remote sensing monitoring and statistical analysis of the entire region. By using high-quality hyperspectral imagery data from previous studies, monitoring was conducted at different stages of wheat growth, including planting, germination, and maturity. The high spectral resolution of the hyperspectral satellite imagery was fully utilized to accurately identify crops.

Based on hyperspectral image analysis and field survey results, it was found that due to rainfall in the early part of 2023, most dryland wheat matured early, and germination and mold problems were severe. The planting distribution is shown in the following figure.

▲Remote sensing monitoring results of wheat planting distribution

Remote sensing monitoring of wheat disaster experimental areas

Based on field survey samples and hyperspectral remote sensing data, the area of ​​wheat affected by disaster and mold was extracted. During the wheat extraction process of indoor interpreted samples, a wheat extraction algorithm model was established. The field survey modified sample library was input into the model for extraction to obtain the wheat disaster distribution map of the experimental area.

▲Multi-band pseudo-true color composite image of wheat planting area

By fully leveraging the objective, rapid, and precise technological advantages of hyperspectral remote sensing, Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD has achieved accurate assessments of crop growth, soil environment, crop diseases and pests, agricultural land use status, and agricultural conditions. This assists partner insurance companies in quickly initiating loss assessment, compensation, and claims investigation work, minimizing losses for wheat farmers, and fully utilizing the economic compensation function of agricultural insurance.

▲Remote sensing monitoring distribution map of wheat planting areas

▲Remote sensing monitoring distribution map of wheat mold-affected areas

Xi'an Institute of Optics and Precision Mechanics CAS Aerospace Science and Technology Group Co.,LTD：Establish a complete industrial chain for hyperspectral remote sensing satellite applications

In recent years, CAS Xiguang Aerospace has focused on the hyperspectral remote sensing product business chain, conducting in-depth research and practice in the field of hyperspectral remote sensing satellite applications. Based on its cutting-edge capabilities in hyperspectral remote sensing satellite development, payload manufacturing, data acquisition, data development, analysis and application, CAS Xiguang Aerospace has independently designed and developed a number of hyperspectral satellites and application system products with advanced domestic indicators. It has established a complete hyperspectral remote sensing satellite application industry chain in fields such as agriculture and forestry, dual-carbon monitoring, ecological environment, marine monitoring, disaster prevention and control, soil erosion, fire early warning, smart cities, and natural resources, producing a number of exemplary and leading scientific and technological achievements, and using scientific and technological power to help various industries achieve accurate decision-making, precise governance and refined management.

In the future, CAS Xi'an Aerospace will further improve its technological research and development efficiency, create a low-cost, near-real-time, high-spectral-resolution remote sensing constellation and operational data application services, fully meet the needs of various commercial remote sensing applications and data applications, and contribute to my country's national defense, economic and social development.