Towards an Active and Passive L- and P-band soil moisture satellite mission

迈向主动和被动 L 和 P 波段土壤湿度卫星任务

• 批准号: DP210100430
• 负责人: Prof Jeffrey Walker
• 金额: $ 42.2万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-01-25 至 2025-01-24
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210100430
• 关键词: Towards; Active; Passive; band; soil

This project tests alternate configurations for remote sensing of soil moisture using a new state-of-the-art Active/Passive (ie radar/radiometer) P-/L-band (ie microwave) satellite concept through a series of airborne field experiments. Timely soil moisture information is critical to improved water management for food production in the face of climate variability. The challenge is to do this accurately over large areas with an appropriate spatio-temporal detail, and for a soil depth that closely approximates the layer which impacts crop/pasture growth and influences management decisions. The longer P-band allows deeper penetration into the soil while the active/passive combination uses the respective resolution and accuracy characteristics.

该项目通过一系列机载现场实验，使用最先进的主动/被动（即雷达/辐射计）P/L 波段（即微波）卫星概念来测试土壤湿度遥感的替代配置。面对气候变化，及时的土壤湿度信息对于改善粮食生产的水管理至关重要。面临的挑战是如何在具有适当时空细节的大面积区域上准确地做到这一点，并且土壤深度非常接近影响作物/牧草生长和影响管理决策的层。较长的 P 波段可以更深地渗透到土壤中，而主动/被动组合则使用各自的分辨率和精度特性。