Vicinagearth covers the concepts of Low-altitude, Underwater and Cross-domain spaces. The journal focuses on the research of safety in vicinagearth space, providing a platform for researchers to communicate. It covers novel data acquisition, information interaction and integrated applications in common safety for stereoscopic traffic, disaster rescue, underwater port monitoring, ecological monitoring, marine ranching, and related fields. The journal involves eight sections dedicated to vicinagearth: Intelligent Signal Analysis, Unmanned System, Intelligent Control and Decision, Cross-Domain Remote Sensing, Coherent Light Detection, Stable Acquisition, Water-Related Optics, and Intelligent Transportation. Topics of interest include but are not limited to, signal processing, machine intelligence, photoelectric detection, mechatronics, information/quantum communication, new materials, energy and power, etc. .