In the process of low orbit satellite navigation search and rescue, there is significant relative motion between the satellite and the ground, resulting in substantial Doppler frequency shifts. Spread ...

Mixed-source isolated microgrid is usually composed of renewable energy, energy storage devices and diesel generators (DGs). Virtual synchronous generator (VSG) has been developed recently years. In ...

This app from NASA's ESDIS provides the capability to interactively browse over 1000 global, full-resolution satellite imagery layers on desktop and mobile devices. Many of the imagery layers are ...