中国自主研制17公斤12U遥感立方星，搭载多光谱相机实现亚米级对地观测，低成本微纳遥感技术达到国际先进水平 The domestically-built 17kg 12U CubeSat carries multi-spectral camera for sub-meter remote sensing, bringing China’s low-cost microsatellite imaging tech to global advanced tier