Abstract: A new pollutant detection equipment for environmental science is provided. The water is pumped in through the pumping seat. After being sensed through the sensor heads inside, the data is analyzed by detection machine, which output the result to the data panel to detect the water resources. During detecting, the water is pumped in through the water inlet pipe. After the water flows onto the separation block, the water is guided by the guide block and then rapidly rushes into the separation ring. The driven frame is driven to rotate by the incoming water. If there are a lot of root systems of duckweed in the water, the root systems can be concentrated and cut up through the driven frame, and then they continue to move backwards and cut for a second time.

Abstract: A method, device, system, and storage medium for tracking a moving target are provided. The method uses three-dimensional radar observation data to construct a state vector and a motion model of the moving target, thereby to construct a state equation and an observation equation for achieving filtering and tracking within a linear Gaussian framework. The disclosure is also suitable for a moving target in a two-dimensional scene with a distance and an azimuth, and the disclosure use a two-dimensional observation vector to construct a dynamic system to achieving tracking of the moving target. The disclosure can be used in radar systems containing Doppler measurements, and tracking of moving targets can be implemented by performing dimension-expansion processing on observation equations.