Core Points - The NASA-ISRO Synthetic Aperture Radar Satellite (NISAR) is set to launch on July 26, with a budget of $1.5 billion, and aims to capture detailed data on Earth's geological and environmental changes [2] - NISAR features a 12-meter wide antenna that will unfold in space, allowing it to collect data over a 240-kilometer range and observe nearly all land and ice regions on Earth every 12 days [4] - The satellite will generate up to 140 petabytes of data in its first three years, equivalent to NASA's entire Earth science data archive [4] - NISAR will be the first satellite to conduct radar observations at two different wavelengths, with NASA's radar at 24 cm for penetrating vegetation and ISRO's radar at 9 cm focusing on India and polar regions [4] - The NISAR team plans to create the world's first regularly updated global soil moisture map with a resolution of 200 meters, aiding in irrigation planning and assessments of drought and flooding [5]
美国和印度打造的巨型雷达卫星即将发射
Xin Lang Cai Jing·2025-07-15 02:33