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.

该项目通过一系列空中实地实验，测试使用最新的主动/被动（即雷达/辐射计）P/L波段（即微波）卫星概念遥感土壤湿度的替代配置。在气候多变的情况下，及时获得土壤湿度信息对于改善粮食生产用水管理至关重要。目前的挑战是要做到这一点，准确地在大面积与适当的时空细节，土壤深度，密切接近层影响作物/牧草生长和影响管理决策。较长的P波段允许更深地穿透土壤，而主动/被动组合使用各自的分辨率和精度特性。