Abstract: The present disclosure provides a system and a method for measuring water capacity of polar lakes, and relates to the technical field of lake water capacity measurement. The method comprises the steps: controlling an unmanned aerial vehicle to move along with an unmanned underwater vehicle at a preset height right above the unmanned underwater vehicle by utilizing an ADRC algorithm; obtaining lake surface point cloud data, under-lake point cloud data and under-lake single-beam ranging data so as to construct a water three-dimensional topographic map, a lake coastal three-dimensional topographic map and a lake bottom three-dimensional topographic map under the same coordinate system, and then determining the lake water capacity.

Abstract: A giant six-legged polar research vehicle with tracked feet, including a platform, six legs arranged at six ends of the platform and six tracked feet arranged below the six legs. A monitoring device is arranged on a top cover. Six power compartments each having a steering device are arranged at six ends of a chassis in the platform. Each leg includes a main traveling device with an upper end and a lower end respectively connected to the steering device and a tracked foot, an auxiliary traveling device with an upper end and a lower end respectively connected to the chassis and the main traveling device, and a connecting device arranged on the main traveling device. The tracked foot includes a main flipping mechanism, an auxiliary flipping mechanism, a tracked foot slewing device, a crawler, a sliding plate and a suspension.